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Two-phase direct-current bias vernier motor controller and control method

A vernier motor and DC bias technology, applied in AC motor control, motor generator control, electronic commutation motor control, etc., can solve problems such as excessive controller resources

Pending Publication Date: 2020-04-17
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a two-phase DC bias vernier motor controller and control method to solve the problems of the converters used in existing controllers occupying too many power electronic devices and controller resources. Small in size and weight, it avoids the bridge arm direct-through risk in the traditional structure in principle, improves system reliability, and effectively reduces the number of power electronic devices used, especially power devices, on the premise of ensuring the performance of the controller. The quantity used can greatly reduce the cost of the controller, and is suitable for the drive control of the new two-phase DC bias vernier reluctance motor

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  • Two-phase direct-current bias vernier motor controller and control method

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing, the present invention will be further described:

[0050] The invention allows the DC component in the DC bias circuit to be slightly larger than the amplitude of the AC component. At this time, the output torque is slightly reduced, but it can ensure that the current direction of the motor remains unchanged during operation, and only the current magnitude changes, so Figure 4 Medium device S 12 and S 13 It only plays the role of conduction and freewheeling, and the four devices all use pulse width modulation to output command voltage. Since the power device S 12 and S 13 The winding current is not controlled, and there is no need for switching, so it can be simplified as a freewheeling diode.

[0051] Through the above analysis, it can be found that the number of turn-off power devices of the motor controller is reduced from 4 to 2 per phase, and only one freewheeling diode is added to each phase, and the number of t...

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Abstract

The invention discloses a two-phase direct-current bias sinusoidal current motor controller and a control method. The controller comprises a first subtracter, a second subtracter, a third subtracter,a fourth subtracter, a speed regulator, a d-axis current regulator, a q-axis current regulator, a 0-axis current regulator, a pulse width modulator, a converter, a motor position sensor, an A-phase current sensor, a B-phase current sensor and a current converter. After topological optimization, driving resources can be reduced by half, and control signals needing to be outputted by the control chip are also reduced by half.

Description

technical field [0001] The invention belongs to an AC motor drive control device, in particular to a two-phase DC bias vernier motor controller and a control method, which can be used for drive control of a novel two-phase DC bias vernier reluctance and vernier permanent magnet motor. Background technique [0002] Permanent magnet motors have the excellent characteristics of low speed and high torque, but the high price of permanent magnet materials leads to high cost of permanent magnet motors, which seriously restricts their application in industrial occasions. Although the traditional switched reluctance motor has simple structure and low cost, its unique operation mode determines the noise and vibration of the motor, and the torque ripple is also large. These drawbacks hinder the application of switched reluctance motors. In order to combine the advantages of the two motors, some scholars have proposed a three-phase DC biased vernier reluctance motor in recent years. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/18H02P25/092
CPCH02P21/18H02P25/092
Inventor 贾少锋李斌珂梁得亮闫宽宽刘进军
Owner XI AN JIAOTONG UNIV