WO2005064767A1 - Moteur a aimants permanents - Google Patents

Moteur a aimants permanents Download PDF

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Publication number
WO2005064767A1
WO2005064767A1 PCT/CN2004/001549 CN2004001549W WO2005064767A1 WO 2005064767 A1 WO2005064767 A1 WO 2005064767A1 CN 2004001549 W CN2004001549 W CN 2004001549W WO 2005064767 A1 WO2005064767 A1 WO 2005064767A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
permanent magnet
rotor
phase
teeth
Prior art date
Application number
PCT/CN2004/001549
Other languages
English (en)
Chinese (zh)
Inventor
Guiben Gao
Xuyi Wang
Teng Chang
Shang Cheng Liang
Xiuwen Zhang
Fengqin Pei
Xuan Liang
Original Assignee
Guiben Gao
Xuyi Wang
Teng Chang
Shang Cheng Liang
Xiuwen Zhang
Fengqin Pei
Xuan Liang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 200320130711 external-priority patent/CN2701147Y/zh
Application filed by Guiben Gao, Xuyi Wang, Teng Chang, Shang Cheng Liang, Xiuwen Zhang, Fengqin Pei, Xuan Liang filed Critical Guiben Gao
Publication of WO2005064767A1 publication Critical patent/WO2005064767A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/02—Synchronous motors
    • H02K19/04—Synchronous motors for single-phase current
    • H02K19/06—Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motors

Definitions

  • the utility model relates to a motor, in particular to a permanent magnet motor.
  • each magnetic pole of the motor contains only a small number of cogging and coil components, which makes the stepped sinusoidal magnetic dense wave excessively rough and contains a large number of harmonics This leads to vibration and uneven torque, noise pollution and grid pollution, and high energy consumption due to temperature rise. Because the slots occupied by each coil in the motor are relatively small, after deducting the volume of the insulating material and the corner space, the fill slot fill rate is very low, resulting in a low iron-copper surround ratio.
  • each coil is 2–1 Cogged structure rather than solid stem, so each length of the coil is invalid, and the coils forming a magnetic pole are not fully coupled with each other, but are staggered one by one.
  • the area of one tooth results in a low copper-iron surround ratio.
  • This structure deviates from the optimization principle of the transformer structure, which limits the reduction of iron and copper losses and the improvement of energy efficiency; the winding structure of the motor is complicated, the more the number of poles, the more difficult it is to manufacture, and the higher it is; Slip rings, permanent magnets, claw poles, magnetic isolation sleeves and other components not only have high manufacturing costs, but also limit the improvement of power balance and firmness indicators; the motor is for grams]!
  • the number of teeth of the stator and rotor needs to avoid certain undesirable ratios.
  • Different types of motors need to choose different types of winding patterns. Therefore, it is difficult to carry out true serialization and standardized product design in accordance with the principle of geometric similarity.
  • the purpose of the utility model is to provide a permanent magnet motor, which can solve the shortcomings of the prior art, so that the motor has a better air-gap sine magnetic density wave, smaller harmonics, and higher iron-copper. , Copper-iron surround ratio, simple winding structure, low manufacturing cost, etc.
  • a permanent magnet motor includes a coaxially assembled stator and a rotor; the rotor is made of laminated silicon steel sheets with rotor teeth and rotor slots; the stator has at least two pieces; Permanent magnets and at least two multilayer silicon steel sheet laminates. Permanent magnets and multilayer silicon steel sheet laminates are arranged alternately. Each multilayer silicon steel sheet laminate has two stator teeth, with one between the two stator teeth. Phase shift slot, armature coil is set in the phase shift slot.
  • the number of phase shift slots on the stator is the same as the number of phases.
  • the number of phase shift slots on the stator can also be the same as the multiple of the number of phases.
  • the armature coil is arranged in the phase shift slot of two adjacent multilayer silicon steel sheet laminates, and one armature coil surrounds two stator teeth and one permanent magnet; or one armature coil is arranged in one phase shift Inside the slot, the armature coil surrounds the slot bottom yoke of the phase shift slot.
  • the distance from the middle of the tooth end edge of the rotor tooth to the axis is greater than the distance from the middle of the tooth end edge to the axis. distance.
  • the tooth end curves of the stator and rotor tooth shapes may also be concentric arcs with the axis as the center.
  • the number of teeth on the rotor is equal to the number of phase shift slots on the stator; the number of teeth on the rotor can also be equal to the number of phase shift slots on the stator plus the number of phase shift slots divided by the number of motor phases.
  • each pair of stator teeth sandwiching a permanent magnet is an independent phase, and there is no common tooth between the other phases.
  • the slot can realize the formation of a sine magnetic dense wave in the air ⁇ gap between the stator teeth and the rotor teeth of the specific shape described in the present utility model, reduce harmonics, reduce noise, reduce temperature rise, and improve vibration and unevenness. Torque improves efficiency; each armature coil is an independent phase.
  • Each phase shift slot is equivalent to the sum of several small slots in existing motors, saving wires and reducing copper losses. The space of the slot is large, and the proportion of the space occupied by the insulating material and the remaining corners is significantly reduced.
  • the degree of freedom in the operation of the wire is improved, and it is easier to deal with problems such as disordered wiring, twisting and slipping, rigidity and strong bending. It can be used as short as possible.
  • the thick copper wires are tightly packed and densely wound, which can significantly increase the iron, duty cycle and copper wire duty cycle, achieve the highest iron-copper, copper-iron surround ratio, and reduce copper loss and iron loss to a lower level. Level; Because the rotor of the utility model has no windings, no permanent magnets, and no excitation windings, brush slip rings, claw poles, magnetic isolation sleeves, etc., the manufacturing cost is low, and the rotor has excellent dynamic balance. Performance and firmness, smooth running and long life ... As shown in FIG.
  • the rotor of the present utility model is 7-tooth, and can be made into a 6-phase motor, or combined into a 3-phase motor as required.
  • the utility model has the advantages of convenient manufacturing, sufficient magnetization, easy assembly, high utilization rate of magnetic properties, high space utilization rate, convenient installation of damping rings, and is particularly suitable for high-performance permanent magnet materials.
  • the equivalent number of poles P can easily be larger than a permanent-magnet or field-excited rotor generator of a similar scale, which can reach a higher frequency at a slower speed and can output a higher voltage And large electric power;
  • the inductive reactance of the armature winding can play a role of voltage stabilization, and maintain the same voltage supply for the same load when the speed changes in a large range;
  • polyphase motors can reduce the power level of the rectifier device; the starting torque is small , Smooth and easy.
  • the above effects of the utility model as a generator can make the utility model widely used as a vehicle light generator, a wind power generator, and power in these places; machine speed It is low and variable, and the application of the utility model can solve problems that have been difficult to solve for a long time, such as darkening of the lamp due to insufficient performance of the existing generator and lack of power of the battery.
  • Figure 1 is a schematic diagram of the structure of a double-phase degenerate three-phase motor
  • Figure 2 is a diagram of a six-phase phasor
  • Figure 3 is a diagram of a degenerate three-phase phasor
  • Fig. 5 is a schematic diagram of a stator and a rotor of a two-phase motor
  • Fig. 6 is a schematic diagram of a single-phase motor structure
  • Fig. 7 is a schematic diagram of an inner stator / outer rotor structure; Schematic.
  • 1 is a stator
  • 2 is a rotor
  • 3 is a rotor tooth
  • 4 is a rotor slot
  • 5 is a permanent magnet
  • 6 is a multilayer silicon steel sheet laminated body
  • 7 is a damping ring
  • 8 is a stator tooth
  • 9 is a phase shifting slot.
  • 10 is a sine tooth profile
  • 1 1 is a sine air gap
  • 12 is an armature coil
  • 13 is a phase magnetic pole
  • 14 is a slot bottom yoke
  • 15 is an outer stator
  • 16 is an inner rotor
  • 17 is an inner stator
  • 18 is Outer rotor
  • 19 is the radial air gap
  • 20 is the axial air gap
  • ⁇ is the mechanical angle of the pole pitch
  • ⁇ is the mechanical angle of the stator teeth and rotor teeth
  • ⁇ is the mechanical angle of the phase shift slot
  • a, b, c, d, e, f, A, B, C, A,, B,, C, A 2 , B 2 , C 2 are output / input terminals
  • ⁇ ⁇ , U b , U e , U d , U e , U r , U A , U B , U c are voltage phasors.
  • the permanent magnet of the utility model can be made of permanent magnet materials such as neodymium-iron-boron, samarium-cobalt alloy, cerium-cobalt copper-iron, ferrite, and the like, and a damping ring 7 can be sleeved around the permanent magnet.
  • the silicon steel sheet of the present utility model can be replaced by other soft magnetic materials such as ferrite, Permalloy, and electric iron.
  • the permanent magnet motor of the utility model comprises a coaxially assembled stator and a rotor. It can also be an inner stator and an outer rotor structure; it can also be an axial air gap structure.
  • the rotor is made of laminated silicon steel sheets with rotor teeth and rotor slots.
  • the stator has at least two permanent magnets and at least two laminated silicon steel sheets.
  • the laminated silicon steel sheets are U-shaped.
  • the permanent magnets It is arranged alternately with multilayer silicon steel sheet laminates.
  • Each multilayer silicon steel sheet laminate has two stator teeth. There is a phase shift slot between the two stator teeth.
  • An armature coil is arranged in the phase shift slot.
  • the number of phase shift slots on the stator is the same as the number of phases.
  • the number of phase shift slots on the stator can also be the same as the multiple of the number of phases.
  • An armature coil is set in the phase shift slot of two adjacent multilayer silicon steel sheets laminated body.
  • the armature coil surrounds two stator teeth and a permanent magnet.
  • This structure is usually called ring-toothed winding.
  • One armature coil can also be set in one phase-shifting slot, and the armature coil surrounds the slot bottom yoke of the phase-shifting slot.
  • This structure is usually called a ring-yoke winding.
  • the distance from the center of the tooth edge of the rotor tooth to the axis is greater than the distance from the center of the tooth edge to the axis.
  • the distance from the middle of the edge of the tooth end of the stator tooth to the axis is smaller than the distance from the part outside the middle of the edge of the tooth end to the axis.
  • These two tooth shapes are collectively called sine tooth shape10.
  • the tooth end curves of the stator and rotor tooth shapes may also be concentric arcs with the axis as the center.
  • the number of teeth on the rotor is equal to the number of phase shifts ⁇ on the stator.
  • the number of teeth on the rotor can also be equal to the quotient of the number of phase shift slots on the stator plus the number of phase shift slots divided by the number of motor phases.
  • Figure 4 shows the unfolding diagram of the stator and rotor of this motor.
  • the three-phase output / input terminals are A, + A 2 ; B, + B 2 , d + C 2 .
  • k p is not an odd number.
  • Example 2 Although A, A 2 , BiB 2 , and CC 2 are also connected in series and divided into three outputs, they are not degenerate.
  • Figure 5 shows a schematic diagram of the stator and rotor of a two-phase motor.
  • the two-phase output / input terminals are 88 ⁇ B! + B 2 .
  • the synchronous speed of this motor is 600 rpm when driven by industrial frequency, and the frequency is 250Hz when 3000 rpm is used for power generation.
  • the significance of two-phase motors lies in the large number of applications without three-phase power, such as household appliances, simple power tools, etc., as long as the single-phase power is split through the capacitor, it can be moved.
  • Figure 6 shows a single-phase motor.
  • e 180 °.
  • a 180 ° phase difference is very easy to implement, it is only that the winding terminals are connected in opposite directions, so no phase shift slot is provided in this example, but a wire slot is still required.
  • the armature coils in the embodiments of the present invention can be wound around the bottom yoke of the phase-shifting slot like A 2 ⁇ 3 in the figure to form a ring-yoke winding; or they can be affixed to two stator teeth like ⁇ and B 2 A ring-shaped winding is formed on a phase magnetic pole composed of a permanent magnet, and only one of the two methods is selected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention concerne un moteur à aimants permanents comprenant un stator et un rotor fixés coaxialement, ledit rotor étant constitué de feuilles d'acier au silicium stratifiées à couches multiples, et doté de dents et de fentes. Ledit moteur à aimants permanents est caractérisé en ce que le stator est équipé d'au moins deux aimants permanents et d'au moins deux feuilles d'acier au silicium stratifiées à couches multiples agencées en alternance avec lesdits aimants permanents, en ce que deux dents de stator sont disposées sur chaque feuille d'acier au silicium stratifiée à couches multiples, et en ce que les enroulements d'induit sont encastrés dans des fentes de déphasage situées entre deux dents de stator. En conséquence, les désavantages de l'état de la technique sont éliminés. Ledit moteur possède une forme d'onde sinusoïdale à meilleure densité magnétique dans l'entrefer, moins d'harmoniques et un vitesse d'enroulement fer-cuivre et cuivre-fer plus élevée. L'enroulement est une structure simple et bon marché.
PCT/CN2004/001549 2003-12-29 2004-12-29 Moteur a aimants permanents WO2005064767A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200320130711 CN2701147Y (zh) 2003-09-05 2003-12-29 永磁发电机
CN2003201307118 2003-12-29

Publications (1)

Publication Number Publication Date
WO2005064767A1 true WO2005064767A1 (fr) 2005-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2004/001549 WO2005064767A1 (fr) 2003-12-29 2004-12-29 Moteur a aimants permanents

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WO (1) WO2005064767A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045348A1 (de) * 2005-09-22 2007-04-05 Siemens Ag Zahnmodul für ein permanentmagneterregtes Primärteil einer elektrischen Maschine
DE102006009440A1 (de) * 2006-03-01 2007-09-06 Siemens Ag Elektrische Maschine mit kunststoffummantelten Polzähnen und entsprechendes Verfahren
DE102006009439A1 (de) * 2006-03-01 2007-09-06 Siemens Ag Elektrische Maschine mit Einschubeinrichtung für einen Dauermagneten zwischen Polzahnhälften und entsprechendes Herstellungsverfahren
DE102006014341A1 (de) * 2006-03-28 2007-10-11 Siemens Ag Polzahn mit Stirnseitenblech zum Verbinden von Polzahnhälften und entsprechendes Verfahren zum Herstellen eines Polzahns
US8508095B2 (en) 2007-10-05 2013-08-13 Rolls-Royce Plc Flux-switching machine
EP2637290A3 (fr) * 2012-03-07 2017-08-23 Samsung Electronics Co., Ltd Moteur et lave-linge pourvu de ce dernier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2653387A1 (de) * 1976-11-24 1978-06-01 Intermadox Ag Schrittmotor
CN2373938Y (zh) * 1999-06-08 2000-04-12 常腾 一种车辆发电机
CN2458806Y (zh) * 2000-12-05 2001-11-07 高桂本 一种感应子永磁发电机
US6583531B1 (en) * 1999-05-21 2003-06-24 Matsushita Electric Industrial Co., Ltd. Motor with permanent magnet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2653387A1 (de) * 1976-11-24 1978-06-01 Intermadox Ag Schrittmotor
US6583531B1 (en) * 1999-05-21 2003-06-24 Matsushita Electric Industrial Co., Ltd. Motor with permanent magnet
CN2373938Y (zh) * 1999-06-08 2000-04-12 常腾 一种车辆发电机
CN2458806Y (zh) * 2000-12-05 2001-11-07 高桂本 一种感应子永磁发电机

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045348A1 (de) * 2005-09-22 2007-04-05 Siemens Ag Zahnmodul für ein permanentmagneterregtes Primärteil einer elektrischen Maschine
DE102006009440A1 (de) * 2006-03-01 2007-09-06 Siemens Ag Elektrische Maschine mit kunststoffummantelten Polzähnen und entsprechendes Verfahren
DE102006009439A1 (de) * 2006-03-01 2007-09-06 Siemens Ag Elektrische Maschine mit Einschubeinrichtung für einen Dauermagneten zwischen Polzahnhälften und entsprechendes Herstellungsverfahren
US7880361B2 (en) 2006-03-01 2011-02-01 Siemens Aktiengesellschaft Electrical machine with an insertion device for a permanent magnet between pole tooth halves and corresponding production method
US8115347B2 (en) 2006-03-01 2012-02-14 Siemens Aktiengesellschaft Electrical machine having plastic-sheathed pole teeth, and a corresponding method
DE102006014341A1 (de) * 2006-03-28 2007-10-11 Siemens Ag Polzahn mit Stirnseitenblech zum Verbinden von Polzahnhälften und entsprechendes Verfahren zum Herstellen eines Polzahns
US8076815B2 (en) 2006-03-28 2011-12-13 Siemens Aktiengesellschaft Pole tooth with end face laminate for connection of pole tooth halves and corresponding method for production of a pole tooth
DE102006014341B4 (de) * 2006-03-28 2020-01-30 Siemens Aktiengesellschaft Polzahn mit Stirnseitenblech zum Verbinden von Polzahnhälften und entsprechendes Verfahren zum Herstellen eines Polzahns
US8508095B2 (en) 2007-10-05 2013-08-13 Rolls-Royce Plc Flux-switching machine
EP2637290A3 (fr) * 2012-03-07 2017-08-23 Samsung Electronics Co., Ltd Moteur et lave-linge pourvu de ce dernier

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