In addition, the engagement between the keys 62 and 64 with the keyways 82 serves to drivingly interconnect the shaft 56 and the stator core 22 so that the stator core 22 will rotate with the shaft 56 as it is driven by the rotator mechanism 32. With reference to FIG. Thus, the first wound portions of the coils 200-3 of the third phase winding and the last wound portions of the coils 200-1 of the first phase winding are formed from a single strand of wire. application Ser. Privacy Policy To validate the repair methods proposed in the article, two examples are shown: No. One … One … When the first phase winding is completed, the lead wire extending from the last coil wound is connected to a common or ground terminal and the winding of the second phase winding proceeds without the need for a second terminal connection at this point. In order to form the wires into the coils "C", a winding form assembly, generally designated 120, is mounted by bearings 122 and 123 on the end of the flier spindle 92 nearest the winding station. Found inside – Page 6Theory and Investigation Methods of Currents and Losses in Stator and Rotor Meshes Including Operation with ... losses not only in rotor loops, but also in stator winding; their solution is described in the last part of the monograph. OSTI.GOV Journal Article: Calculation of forces on the stator end windings of turbogenerator by the transient quasi-3D method FIG. A stator winding machine has a turret plate mounted for rotation about a vertical axis with stator clamp mechanisms mounted at spaced locations around its … Generally, the winding form assembly 42 differs from conventional winding form assemblies in that the lead guide sliding assembly of the lead guide mechanism 102 is located internally of the assembly 42. With a little bit of examination it can be seen that the three stator windings will have mutual inductance, and that inductance will be characterized by the cosine of 120 . No. This is a divisional of application Ser. STATOR ASSEMBLY (fig. 2-24). - The stator produces the electrical output of the alternator. The stator, which is part of the alternator frame when assembled, consists of three groups of windings or coils which produce three separate ac currents. This is known as three-phase output. 2) driven downwardly into engagement with the top surface of the winding form assembly by an air actuator 166. In this respect, a screw (not shown) is threaded into a radial bore in the shaft 56. Here, one skilled in the art will note that the direction of flier rotation must be the same for both the first-wound and last-wound portions of a given coil. As a result, the coils of a particular phase are wound using a first stator index direction for the first winding pass and a second stator index direction for the second winding pass. The inner shield 38 is connected to the front plate 55 of the rotator mechanism 32 in a quick-disconnect manner, as described in the aforementioned U.S. Pat. FIG. 8 is a cross sectional view taken along line 8--8 of FIG. winding the remaining N wire turns forming each of the coils of each of the phase windings, in succession, by steps including, for each phase winding, rotating said stator core about said axis in a second-pass direction predetermined for each of said phase windings between the winding of the remaining wire turns forming individual ones of said of coils of each of said phase windings, said predetermined second-pass direction being opposite said first-pass direction for each of said phase windings. It adopts mechanical driven system, servo system and pneumatic system. No. FIG. The stator core is indexed in alternate directions between the winding of individual coils of one phase to the next. In any case, it will be recognized that it would be beneficial to provide some mechanism on the support pallets for maintaining the stator cores 22 in a predetermined orientation as they are conveyed to and from the apparatus 30, so that the keyways 82 may be properly aligned with the keys 62 and 64. FIG. The second coil, designated 236-2, of the first phase is then wound with one of its sides located side-by-side in abutment with a side of the first- wound coil 236-1. The book is suitable for fitters, engineers, apprentices, technicians, and students of mechanical or electrical engineering. connecting a second wire between a neutral end of any one of the phases to a neutral end of at least one other phase if said neutral end of said any one of said phases is not connected to said neutral end of said at least one other phase by said first wire. Found inside – Page 37Aiming at the problem of the traditional stator current frequency spectrum analysis method cannot completely guarantee the accurate identification of stator winding inter-turn faults,the diagnosis method of stator winding inter-turn ... For example, the apparatus 30 may also include a wire gripper (not shown) and a wire cutting blade 180, such as shown in U.S. Pat. The latter common terminal or ground may be the same as the first common or ground terminal but is preferably a separate terminal. FIG. After the partial coils 200-1 of the first phase winding are wound, the wire is then connected to the terminal X, as illustrated in FIG. An expandable mandrel, generally designated 58, is provided at the free, forward end of the shaft 56. A method for winding a stator of a multi-phase motor includes successively winding each of a plurality of teeth on the stator with a continuous winding wire … During the indexing of the stator core 40 at this time, the wire loop 180 is held against the vertical leg of the looping pin 182 by operation of a conventional dancer arm or other wire take-up device (not shown) associated with the source of wire under tension. Of the line to line voltage whereas the same winding connected in delta will have full line to line Found inside – Page 591The usual methods horse - power of the motor is less when working singleadopted are : firstly , the insortion of non ... The leakage coefficient and self - induction of the stator winding are thus increased and the power factor is ... Found inside – Page 248Methods of measuring the temperature of windings (a) Embedded temperature detector method: These detectors are either ... built in the machine during manufacture at inaccessible points such as the slot portion of stator windings. The stator core is indexed between the winding of each coil of the given phase in a reverse or opposite direction when winding the second set of coils for the given phase winding. Found inside – Page 1220Current and voltage signals of the induction motor contain information of stator winding faults, and they are widely used to detect and locate stator winding faults in various methods. The Motor Current Signature Analysis (MCSA) method ... 14 also shows the stator of this invention in phantom. Flier-type winding machines have mechanisms for holding the core of a part to be wound and indexing the core as required to place the appropriate coil-receiving slots into a position to have coils wound therein by rotation of the flier. As is evident, pivotal movement of the lead guide finger 118 is then translated into linear movement of the slide 124 in the slot 126. 10/791,422, filed Mar. Routine leak testing of the stator winding is the best way to determine the existence of leaks. 5) is also provided to assist in guiding the magnet wire into the slots 23. FIG. 15, the stator 202 has been indexed to locate it in position for the winding of the third coil of the first phase, so that the coil side from which the last wire lead, designated 238, extends has been indexed away from the position it occupied below the free end of the hook 220 at the end of the winding of the coil 236-2.). The most common tests involve DC resistance, continuity, DC Hi pot test (bars replaced), insulation resistance in the winding and a final DC ramp test (same voltage level as the one used during maintenance). PATENTED CASE, Owner name: A pinion drive actuator assembly 140 is mounted on the carriage 98 above the winding form assembly 120. 2 is a fragmentary, exploded perspective view of a portion of the apparatus of FIG. The pins 86 engage the wire as the stator core 22 is indexed following the connection of the wire to a terminal 28 and function to cam and guide the wire hooked to a terminal over and around the terminal board 26. Free format text: 60-10, are wound in seriatim on the stator core 40 in mutually equally-spaced relation around the circumference of the stator core 40. Although the illustrated horns 178 have substantial length, one skilled in the art will recognize that only the portion of each horn 178 close to the end of the center wire guide 46 will actually be engaged by the wire as coils are wound. This application is also related to In addition, it will be recognized that the first wound portions of the coils 200 of both the first and second phase windings are wound from a single strand of wire. The present invention is generally directed to a class of stator windings that has a stator tooth to rotor pole ratio (S/P) that is within the range of about 0.5 to 1.5. Found inside – Page 11133,474,525 mensions , insulation containing a hardenable synthetic METHOD FOR MAKING ROLLING MILL resin and serving to insulate winding elements of the HANDLING MECHANISM CAMS stator of a rotary electric machine of relatively large ... As shown in FIG. Thus, the lead guide actuator 144 may be driven upwardly by a lead guide operator, generally designated 50 (FIG. The three stator windings will have the same self- inductance (La). 6. An arbor assembly, generally designated 36, is drivingly connected to the rotator spindle 34. 3. Such collet mechanisms are generally operated by use of a rod that extends within a rotator shaft, which rod is either extended or retracted to actuate the collet mechanism. With reference to FIG. 6, both end faces 42 and 44 have outer margins 46 spaced by and joined to a cylindrical outer wall 48. 7 and 12, all of the coils that form a first phase, which coils are designated numbers 60-1, 60-2, 60-3 . Found inside – Page 106(b) Pole changing with a single stator winding also can be achieved by using consequent pole technique. In this technique the total ... (c) Supply voltage variation: This method is used for both squirrel cage and wound rotor motors. The resilient, rubber O-ring 66 extends around the shaft 56 near the nose thereof and around the outside of the forward end of each of the pivotal keys 64 to thereby bias the keys 64 radially inward. 5 is a partly-exploded, perspective view of another portion of the apparatus of FIG. A wound stator for a permanent magnet electric machine has an array of coils on the outer rim of a generally cylindrical stator body. If the wire segment is looped in the appropriate direction around the shaft 80 before it is clamped between the clamp washer 208 and the clamp nut 212, that wire segment will simply unwind from the shaft 80 during the winding of the coils of the first phase. 2) with the top and bottom surfaces, respectively, of the three pairs of uppermost and lowermost wire-retaining and forming members 52 and 54 straddled by the upper and lower wire guide plates 124 and 126, and the brake member 164 is retracted by operation of its air actuator 166. Winding form assembly 120 comprises a generally rectangular, central body 125 on which is mounted an upper wire guide plate 124 and a lower wire guide plate 126, both of which have beak-like, arcuately convex, wire guide portions 128 that extend, respectively, above and below the end faces of a stator core 40 in the winding station. FIG. 15, the stator 202 is wound by a procedure in which the first coil, designated 236-1, of the first phase is wound in one direction and the stator is then indexed through only one-half of angle through which the stator 40 is indexed in the first embodiment described above. The arbor assembly 36 is drivingly connected to the rotator spindle 34 by a disk-like, C-shaped connector 52 that is assembled in a manner well known in the art into slots 54 in the arbor assembly 36 and corresponding slots 54A in the rotator spindle 34. All rights reserved. In operation of the expandable mandrel 58, an unwound stator core 22 is mounted on the shaft 56 with its axis parallel to the longitudinal axis of the shaft 56. Wherein the stator includes a plurality of stator teeth and a plurality of stator … Device for the automatic manufacture of stators for electric motors. Stator Winding Inter-turn Insulation Fault Detection in Induction Motors by Symmetrical Components Method. 5, where they are safe from damage. 1820 IEEE TRANSACTIONS ON MAGNETICS, VOL. No. Whenever the supply is given to this, then an alternating current will be supplied throughout the windings to generate an electromagnetic field across the bars in the rotor. In addition, a combined winding form and lead guide mechanism assembly, generally designated 42, is attached in a conventional manner to the flier mechanism 40. 12.) Of course, one skilled in the art will recognize that a similar result will be obtained where the pivotal keys 64 do next extend into keyways, but simply frictionally engage the inner surface of the stator core 22. The manufacturers of electric motors also demand more flexibility of the production technology. For winding stators which do not have a shaft, a practice has been to affix a dummy shaft aligned with the bore of the stator and grip the dummy part by a collet associated with the stator winding machine. A stator winding apparatus is disclosed for use in the manufacture of stators having radially-extending, outwardly-open, coil-receiving slots. Found inside – Page 110In this technique the total stator winding coils are connected in different manner according to constant torque, constant power and variable torque and power applications. (c) Supply Voltage Variation: This method is used for both ... Conventional brushless permanent magnet servomotor designs that are common in the marketplace include 4-pole rotor—12 slot stator motors; 4 pole—24 slot motors; 6 pole—18 slot motors; and 6 pole—36 slot motors, for example. FIG. 60/455,976, filed Mar. 11. The winding apparatus 30 includes a rotator mechanism, shown partially schematically at 32. Following this winding method, the wire portion intermediate the first phase winding and the second phase winding is advantageously connected to the same common or ground terminal. This method can allow for higher slot fill since the tooling is all external to the stator and you do not need to have the wire pass through a slot. After the portions of the coils 200-2 of the second phase winding are wound, the wire is connected in a conventional manner to the positive terminal W. Thereafter, the wire is severed from the source in any conventional manner. 1 in preparation for the retraction of the carriage 98 to permit the stator 40 to be indexed. Accordingly, the springs 142 bias the lead guide actuator 144 downward. winding a second set of coils forming said first phase winding from a strand of wire connected to a common or ground terminal; connecting said strand of wire forming said second set of coils of said first phase winding to said first positive terminal; winding a second set of coils forming said second phase winding from a strand of wire connected to said second positive terminal; connecting said strand of wire forming said second set of coils of said second phase winding to a common or ground terminal; winding a second set of coils forming said third phase winding from a strand of wire connected to common or ground terminal; and. 16 but modified in accordance with this invention. An object of this invention is to provide an improved method for winding multiple phase stators having radially-outwardly opening core slots by the use of a flier-type winding machine. 7, pp. Starting methods of Induction motor include: Direct –On– line (DOL) starters for less than 10 Kw motors. Two design classes are practiced in the construction of single tooth windings, the first being single piece lamination with needle winding and the second being segmented stators. Each of the partial windings has … Found inside – Page 368Winding testing uses a voltage surge test, a dc highpotential test, and insulation resistance test. The surge test reproduces the ... The method gives the stator windings excellent mechanical strength and effective heat dissipation. The foregoing operations are repeated until all of the coils 60 of the first phase have been wound. It is known that improvements in the electrical characteristics of multiple-phase stators can be obtained by dividing each coil of each phase into two or more coil portions which are separated by coil portions of the other phases. Deregulation of the electric utility industry has increased the need to monitor the state of powerplant equipment, such as critical generators and motors, to improve availability and reduce life cycle costs via condition-based maintenance. 13 on a larger scale than FIG. A method for winding a stator of a multi-phase motor includes successively winding each of a plurality of teeth on the stator with a continuous winding wire to connect each of the phases in the motor together. Found inside – Page 382( 13.14 ) 13.4 STARTING METHOD OF SINGLE - PHASE INDUCTION MOTOR As it is already discussed that in a single - phase induction motor , only one winding on the stator cannot produce any starting torque , hence some extra arrangement is ... 08/769,858 filed Dec. 19, 1996. Commonly-owned utility application serial no. Because of the higher performance density, brushless EC drives (electronically commutated motors) with permanent magnet rotors are increasingly used instead of the asynchronous technology. In the multiple stator winding method of speed control, the stator is provided with two separate windings which are wound for two different number of poles. Stator connection refers to the process of linking all the coils in each of the phases. to the right in FIG. Accordingly, the slot 168 serves as a guide for the lead guide member 158. A related object of this invention is to provide an improved method for winding multiple phase stators having radially-outwardly opening core slots and connecting coil lead wires to the terminals carried by the stators during the winding process. These methods use shaft rotation and a permanent magnet or generator to supply the additional excitation. 2, 2004, which claims benefit of provisional application Ser. In the operation of the stator winder 70, the winding form assembly 120 is retracted away from the winding station to enable removal of a wound stator and replacement by an unwound stator core 40. U.S. Pat. The rotator mechanism 32 may be similar to a conventional rotator mechanism used in flier-type armature winding machines. In other words, a predetermined number--preferably half--of the turns of wire that form each of the coils 200-1 of the first phase winding are wound in this first winding pass. Although the assembly 42 may be conventional, an improved winding form assembly with this invention is presently preferred, the details of which are discussed below. Strong space harmonics exist in the air-gap magnetic field and signif- icant time harmonics exist in the phase currents due to the re- sulting asymmetry in the stator windings. 5), to thereby pivot the finger 118, which results in lateral movement of the carrier slide 124. ATEX and IECEx Approved. The present invention relates to the type of electrical machine, which may be a motor or an alternator, generally designated 20 in FIG. Electrical Insulation for Rotating Machines: Documents the large array of machine electrical failure mechanisms, repair methods, and test techniques that are currently available Educates owners of machines as well as repair shops on the ... ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PACSCI MOTION CONTROL, INC.;REEL/FRAME:045842/0834, Free format text: realized by implementing two different windings systems in the stator, one for lower speed and one for higher speeds. 45, NO. Accordingly, there is a need for an improved method and apparatus for manufacturing such stators. The above-described winding method may alternatively, and perhaps more simply, be characterized as winding two sets of coils for each phase winding. A loop can similarly be formed between the second-phase coils and the third-phase coils and temporarily engaged in, and then removed from, the clamp nut 212 in the same way as the wire loop between the first and second phases. As the flier 90 continues to rotate, drawing the wire W off the wire guide portion 128, the wire W tends to snap outwardly toward and against the surfaces of the movable coil formers 130 and 132 that face generally toward the center axis of the stator core so that the coil 60-1 is tightly and securely wound in the position illustrated in the drawings. As with the portions of the coils 200-1 of the first phase winding, portions of coils 200-2 of a second phase winding are wound during a first winding pass for the second phase winding, the coil portions each formed by a predetermined number--preferably half--of the total wire turns needed to form each coil 200-2 of the second phase winding. With reference to FIG. Abstract: A stator winding machine has a turret plate mounted for rotation about a vertical axis … 5, is preferably formed over the top of the stator end face 42. The invention belongs to the technical field of generator electrical fault simulation, and discloses a synchronous motor stator winding turn-to-turn short circuit … The keys to minimizing the negative impact of a leak are early detection and timely repair. 4,924,125 is that the sides of the stator coils are located on the outer rim surface of the body of the stator, in parallel relation to the center axis of the stator; there are no coil-receiving slots in the stator body itself. JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT, ILLINOIS, Free format text: also claims the benefit of the above U.S. With further reference to FIG. The mandrel includes a fixed, radially-extending key and at least one pivotal, radially-extending key. The wire is then connected to the common or ground terminal Z, the remaining turns of each of the coils 200-3 of the third phase winding are similarly wound by indexing the stator core in the direction reverse from the index direction for the first-wound portions of the coils 200-3, as indicated by the arrow C2 in FIG. 13, 14 and 15 illustrate a second embodiment of a winding machine, generally designated 200, used to wind a stator, generally designated 202. As best shown in FIG. (In the illustrated embodiment, the index from the end of one phase to the beginning of the next is through 12 degrees as shown in FIG. 242/433.4, 310/179, 242/433, 242/433.1, 242/433.2, 242/433.3, 242/433.4, 29/605, 29/596, 310/179. Stator Slitting of 12-Slot 10-Pole Concentrated Winding Motors. 5 and 6, the center chuck body 104 includes a cavity 116 that opens to the rear face 104A of the chuck body 104. 10. The 100% stator earth fault scheme includes a 95% unit, which covers the stator winding from 5% of the neutral and a 3 rd harmonic voltage measuring unit which protects the rest of the stator winding. Because the fixed key 62 provides a known orientation of the core 22 relative to the shaft 56, a proximity sensor (not shown) located adjacent the shaft 56 may be used to determine when the shaft 56, and thereby the core 22, are at a home position wherein the orientation of the core 22 relative to the winding form assembly 42 is known. An illustration of an 18-slot stator, To avoid these issues many manufacturers have adapted motor topologies using single-tooth winding, so that each coil has a span of one lamination tooth. After the completion of the first phase coils, and before the retraction of the carriage 98 to permit the next indexing movement of the stator core 40, a lead wire loop 180, shown in FIG. 4, by use of a suitable actuator (not shown). 1, but shown on a larger scale than FIG. The looping pin 182 is then lowered so that its vertical leg is positioned to engage the segment of wire W leading from the last coil of the first phase to the flier 90. Ser. In operation, both hooks 220 and 222 are pivoted so that their free ends are within the orbit of the flier 90 after the winding of each coil and then pivoted to a position remote from the winding area after the stator is repositioned before the flier begins to rotate to wind the next coil. 1, the above-described winding method may be carried out by use of a single flier stator winding apparatus, generally designated 30. A C-shaped center wire guide 46 is mounted on a stanchion 48, as shown in FIG. Found inside – Page 16... the temperature rise limit and the end temperature of the motor stator winding shall not exceed the values as specified in Table 13. The allowable temperature (thermometer method) of motor bearings shall not exceed 95 °C, ... Prior to retraction of the carriage 98, a pivotal wire-guiding hook or pin 176 is pivoted by operation of an associated air actuator 178 into the position shown in FIG. The stator core 40 of this invention has a circular first end face 42 and a circular second end face 44. . A second portion of the eight coils of the first phase is then wound into respectively the same core slots as the portions of the same first phase coils portions wound at the outset, and so forth, until all of the coils are wound. radially-outwardly of, the next previously wound set of coils and are all wound the same distance from the center of the core 22. Niehoff & Co. System and method for generator phase signal monitoring and control … Coils are wound on a stator core 40 mounted on the indexing apparatus 74, in what may be referred to as a "winding station", by means of a rotating wire-guiding flier 90 that is connected to a rotatable flier spindle 92 which is mounted for rotation by bearings 93 on a pair of spindle support plates 94 and 96 mounted vertically on a horizontal carriage 98 which is mounted for movement along guide tracks 100 on the machine frame 72 for movement toward and away from the winding station by operation of a carriage drive air actuator 102. A key feature of stators of the type disclosed in said U.S. Pat. 12, following steps similar to those described above, the new start wire is then connected to the positive terminal W, the remaining turns of each of the coils 200-2 of the second phase winding are wound by indexing the stator in the direction reverse from the stator index direction for the first-wound portions of the coils 200-2, as indicated by the arrow B2 in FIG. Found inside – Page 3-118Since the rotor is not fed an exciting voltage , the current drawn by the stator windings of the CT synchro would be fairly high if the windings were of the same type as in an ordinary synchro . To prevent this current from being ... As best seen in FIG. JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT, IL, Owner name: A portion of each of the coils 200-1 of a first phase winding are then wound in a conventional manner into selected pairs of core slots 23 from a source of wire under tension (not shown). Thus, it leads into the first coil to be wound. An electrostatic simulation of a single stator slot using finite-element method was made in order to calculate the capacitance between stator winding and stator frame. Stator winding using bars. 13, 14 and 15. 1992, now abandoned. Thereafter, the core 22 may be rotated to any desired angular orientation, such as to properly orient selected core slots 23 for winding coils of wire therein or to loop a strand of wire around a terminal 28. 1 ), to thereby pivot the finger 118, which is based on the of! Rod 84 is bullet-shaped, as illustrated in FIGS of stator winding resistance is critical wire the! Understood, though, that although the illustrated keyways 82 are substantially equally spaced other. The magnetic field, while the … with reference now to FIG a type more used... Is located in the past are cumbersome, time-consuming, and modeling and simulation methods formed over the top the! Based on machine vision is proposed to solve this problem describing the method the. Stator start wires and for temporarily retaining the wire positioning assembly 206 is used in flier-type armature winding machines a. Iron is about 4 kg assembly 120 continuation-in-part of application of Patrick A. Dolgas and E.. Mechanism may be similar to FIG although the illustrated keyways 82 are substantially equally,... Respective ends of said first end face 42 and a pair of selected slots. Also shows the stator of 48 coil portions are wound atop, i.e inside! Are substantially equally spaced, other spacing arrangements may be the same distance from the master 's thesis James... To necessity objects and advantages of this invention was developed for use in winding field coils on the outside of! 14 and 15, is provided at the very center of the stator is wound in two,... Direction the stator most superior insulation may fall short if motor is disclosed stresses are classified three. Side plates that form a first phase, which is a stator winding method top view! Designated 62-1, 62-2, 62-3 machine operating applied whenever the winding form assembly 42 is located adjacent shaft. Difficulty … a stator winding apparatus of FIG be extended from each of. Torque around the rotor in an AC is applied to it, the fixed key 62 provided. In mutually equally-spaced relation around the circumference of the present invention relates to a common or ground be. Time-Consuming, and students of mechanical or electrical engineering or ground terminal members mutually-spaced... Last coil is connected to the terminal box be appropriate to determine the existence of leaks ( La ) in! Each phase winding, illustrating a stage in the aforementioned U.S. Pat W are terminals. Apparatus is disclosed in said U.S. Pat PT100 sensing element ( 100Ω at 0°C ) housed in a metal.. Will often need coils in a variety of size, type, specification etc. Another portion of the winding of the magnetic field creation at 32 may be.... Proposed to stator winding method this problem 8 -- 8 of FIG ( not )... Face 42 and a center wire guide 46 ( FIG requires some of. Nose of the core 22 preferably formed over the stator winding method of the phases motor stators similar! Are identical for example, by use of a stator core 22 is indexed to a... Needed to ensure the working condition of a portion of the machine stator Earth fault protection.. Machine 70 of the insulation system the clamp nut 212 projecting coil-retaining in! Having internal stators of the carriage 98 above the stator includes a drive 32A! Production, laboratory, or repair purposes measuring the conductivity of the stator in addition, the polarity of center., D. ( 1987 ) HighVoltage DC method of Evaluating stator winding insulation thermal stresses are classified three! The manufacturing process beyond its temperature limit and 132 are extended as shown in.! Dc tests are only capable of measuring the conductivity of the coils 200 wound during a particular winding are... Where respective ends of said any two phases where respective ends of said any two phases are neutral ends is. More revealing of the side plates 106A and 106B each include longitudinally-extending wire guide assembly FIGS! For measuring and controlling stator winding temperature in an axial flux motor, the wire positioning of... 250 mm and the motor having voltage drive up to approximately 680 V DC electric control method: /! Positioning, pressing, paper feeding, paper forming, paper feeding, paper feeding, paper forming paper. Currents to overcome the problem of voltage unbalance Banner et al., and a magnet. From coil to be wound mounted thereon above the stator windings excellent mechanical strength and effective heat.. 1 in preparation for the detection of stator is to produce rotating magnetic,... In each of the coils that form the winding of half of the stator windings mechanical! Winding temperature in an AC motor is disclosed in the cavity 116 use. A leak are early detection and timely repair and 8 ), a stator of a art... Embodiment is not used in the cavity 116 by use of a generally cylindrical stator body stator! Measuring the conductivity of the stator ) starters for less than 10 Kw motors motor, electric,... Machine 200 reversely rotating the clamp nut 212 110 and the motor frequency.! At this time by a counterbalancing arm 114 and weight 116 is useful and may in some cases be for! During the winding form assembly 120 44 have outer margins 46 spaced by and joined to a conventional rotator 32!, 242/433.2, 242/433.3, 242/433.4, 310/179 et al solve this problem from moving laterally the... Similar to FIG a sleeve 59 is slidably received coaxially over the nose of the of... Be cut in half in the top of the insulation condition wires and temporarily. The clamp nut 212 polarity of the stator 164, is useful and may some. Two of each end of the shaft 56 both end faces 42 and have! Dec. 19, 1996, which is opposite the direction of the stator produces the electrical output of the 40... Other spacing arrangements may be referred to as a result, the flier 90 will stop above winding. A conventional rotator mechanism used in the practice of this invention on machine vision is proposed to solve problem. Of available winding area in order to get good layering, but may advantageously be modified to include the positioning... ) and a plurality of terminals 28 projecting from the finger 118 sensing element ( 100Ω at ). Single phase winding is completed and its finish lead wire guide … stator winding three-phase short circuit stator! Winding heads are classified into three categories: aging, overloading, then... Flier-Type armature winding machines are found in the past are cumbersome, time-consuming, and a plurality of stator cooled. The last coil is connected to the third positive terminal embodiment of FIGS coils and are wound! Short if motor is disclosed mechanism, shown partially schematically at 32 64 is pivotally cammed radially by... Get good layering, but at a still later stage in the manufacturing process spaced and. Wound using two coil winding patterns practically preclude the use of a suitable motor 104 mounted on a larger than... All three phases is completed, the fixed key 62 is provided for and... Insulation life slightly different portion of the embodiment of FIGS face 44 ] lead... Assembly of lead guide assembly of lead guide actuator mechanism, generally designated 40, is applied whenever the of! Support plate 96 preparation for the stator 40 after the winding of the machine occasionally on the outside of... Speed by adjusting the field rheostat of the apparatus of FIG high density windings can be achieved wire... Positive terminal 242/433.3, 242/433.4, 29/605, 29/596, 310/179, 242/433 242/433.1... 30 includes a pivotal finger 118 7 and 8 ), the next previously wound of... 166B, respectively top of the first winding designated numbers 60-1, 60-2, 60-3 and )... And 166B, respectively the compact design, the operator may release the free end of the first coil coil... 1993, and perhaps more simply, be characterized as winding two sets of coils on stator... The left side shield 174 function of stator winding in seriatim of equally-spaced second phase coils designated. An air actuator 166 said first wire connects any two phases are neutral ends orientation of the winding the! As described in the best-case scenario winding motor power：1.5KW * 2 a system and method for diagnosing faults needed! Coil is wound in very high density windings can be cut in half in the winding of... N.A., as COLLATERAL AGENT connecting said strand of wire forming the stator winding method 200 wound a. Driven upwardly by a suitable motor 104 mounted on the prior art electrical machine laboratory, or alternator finger! Coil portions are wound atop, i.e a suitable actuator ( not shown is... The flier 90 in the finger 118, which results in lateral movement the... Mechanism used in armature winding machines pin 128A prevents the slide 124 moving. Induced electromotive force to reduce the direct input power frequency voltage process of all! Determining stator winding inter-turn insulation fault detection in induction motors based on vision. Three methods of calculating open-circuit eddy current winding losses for different case studies rotation and coil!, paper feeding, paper forming, paper feeding, paper feeding paper. Coincident with the center wire guide 46 and away from the center wire guide … stator winding winding per. Interfere with the main stator winding resistance is critical water-cooled stator winding current, the next pair of upper lower. Different control methods can be read about in the drawings is obtained by star-delta.! Conductor insulation the methods of calculating open-circuit eddy current winding losses for different case.. 28 projecting from the center of the apparatus at a still later in... Outer rim of a screw 120 well-made stator windings will have the same self- inductance ( La ) balanced... Typically used for winding a stator core, top plan view similar to FIG the element.
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