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Double three-phase winding variable-flux memory motor, motor system and control method thereof

A memory motor, three-phase winding technology, applied in motor control, AC motor control, motor and other directions, can solve problems such as increasing the cost of the drive system, and achieve the effects of wide application, cost reduction, and rated capacity reduction

Active Publication Date: 2020-10-09
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure normal operation, the amplitude of the magnetization or demagnetization pulse current of the variable flux memory motor generally exceeds the rated current value of the motor, that is to say, it is necessary to increase the capacity of the inverter to realize the magnetization / demagnetization current pulse loading, which substantially increases drive system cost

Method used

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  • Double three-phase winding variable-flux memory motor, motor system and control method thereof
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  • Double three-phase winding variable-flux memory motor, motor system and control method thereof

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Embodiment 1

[0050] figure 1 It is a schematic cross-sectional structural diagram of a double-three-phase winding variable flux memory motor in an embodiment of the present invention.

[0051] like figure 1 As shown, in this embodiment, the variable flux memory motor with dual three-phase windings has a stator with 48 slots and a rotor with 8 poles, which includes a stator 1, a rotor 2 and windings, wherein the rotor 2 is located inside the stator 1 (of course, In some other embodiments, it can also be made as an outer rotor structure, that is, the rotor 2 is located outside the stator 1). Both the stator 1 and the rotor 2 can be made of silicon steel punched sheets; the variable flux permanent magnet is placed on the rotor 2, that is, the position of the rotor pole 3, and the variable flux permanent magnet on the rotor can adopt high coercivity The hybrid permanent magnet scheme of constant flux permanent magnets and variable flux permanent magnets, that is to say, some permanent magnet...

Embodiment 2

[0065] The structure of the variable flux memory motor system in embodiment 2 is basically the same as that of the variable flux memory motor system in embodiment 1, the difference is that the windings of the variable flux memory motor with double three-phase windings include the first A three-phase winding, a second three-phase winding, and a third three-phase winding, the spaces between the three-phase windings have no physical overlap, wherein the axes of the first three-phase winding, the second three-phase winding, and the third three-phase winding are positive For different rotor poles; when the variable flux permanent magnet needs to switch the magnetization state, only the first three-phase winding is loaded with magnetization or demagnetization current pulses to complete the magnetization state conversion of the variable flux permanent magnet, and the second , The third three-phase winding does not participate in the magnetization state conversion of the variable flux ...

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Abstract

The invention discloses a double-three-phase winding variable-flux memory motor, which comprises a stator, a rotor and a winding, wherein the rotor is provided with a variable-flux permanent magnet; the winding is arranged on stator slots and comprises a first three-phase winding and a second three-phase winding, the space of the first three-phase winding and the space of the second three-phase winding are not physically overlapped, and the axis of the first three-phase winding and the axis of the second three-phase winding directly face different rotor poles; when the variable-flux permanentmagnet needs to convert the magnetization state, the first three-phase winding loads a magnetizing or demagnetizing current pulse to complete the magnetization state conversion of the variable-flux permanent magnet, and the second three-phase winding does not participate in the magnetization state conversion of the variable-flux permanent magnet. In addition, the invention also discloses a variable-flux memory motor system which comprises the dual three-phase winding variable-flux memory motor and a controller electrically connected with the dual three-phase winding variable flux memory motor.Moreover, the invention also discloses a motor use method which uses the dual three-phase winding variable-flux memory motor.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motor equipment, in particular to a variable flux memory motor, a system including the motor and a control method thereof. In particular, it relates to a dual-three-phase variable flux memory motor, a system including the motor and a control method thereof. Background technique [0002] The permanent magnet synchronous motor uses high-performance rare earth permanent magnets to replace the field windings, which can significantly improve the efficiency, power density and power factor of the motor, and has become an important research content of high-performance motor drive systems. In drive systems that require a wide range of speed regulation, such as electric vehicle drive motors and machine tool spindle motors, it is expected that the motor can maintain high-performance output such as high efficiency, large torque, and fast dynamic effects within a wide speed range. This requires the ...

Claims

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Application Information

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IPC IPC(8): H02K3/28H02K1/27H02K21/02H02K21/14H02P25/022H02P25/22H02P27/06
CPCH02K3/28H02K1/276H02K1/278H02K21/028H02K21/14H02P25/022H02P25/22H02P27/06H02P2207/05Y02T10/72
Inventor 华浩刘东
Owner SHANGHAI JIAO TONG UNIV
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