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Smooth control method for torque of switched reluctance motor

A switched reluctance motor, smooth control technology, applied in the direction of torque ripple control, etc., can solve the problem of large torque ripple amplitude

Inactive Publication Date: 2012-07-04
NIDEC BEIJING DRIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned defects in the prior art, the present invention provides a torque smoothing control method for switched reluctance motors to solve the problem of large torque fluctuation amplitude caused by one-phase conduction and simultaneous conduction of two phases

Method used

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  • Smooth control method for torque of switched reluctance motor
  • Smooth control method for torque of switched reluctance motor
  • Smooth control method for torque of switched reluctance motor

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Embodiment Construction

[0015] In the torque smoothing control method of the switched reluctance motor provided by the present invention, the control mode of the switched reluctance motor is the current chopping control mode, wherein when the two phases are turned on at the same time, the two phases in the current chopping control mode are The current in the conduction interval drops to the preset current amplitude respectively, so that the torque amplitude when two phases are turned on at the same time is close to the torque amplitude when one phase is turned on.

[0016] like image 3 , Figure 4 As shown, the speed of the switched reluctance motor is controlled by the current chopper control mode. When one phase is turned on, the current amplitude in the conduction interval is Im. When both phases are turned on at the same time, the two-phase conduction interval is The currents are respectively reduced to the preset current amplitude Id, so that the torque amplitude when the two phases are turned...

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Abstract

The invention relates to a smooth control method for the torque of a switched reluctance motor. The control mode of the switched reluctance motor is a current chopping control mode. When two phases are simultaneously conducted, the currents of two-phase conducting regions in the current chopping control mode are respectively reduced to preset current amplitude values, and the torque amplitude when the two phases are simultaneously conducted approaches to the torque amplitude when one phase is conducted. According to the smooth control method, the torque amplitude when the two phases are simultaneously conducted approaches to the torque amplitude when one phase is conducted, so that the torque fluctuation is effectively inhibited, the torque pulsation is reduced, and the torque is smoothly controlled.

Description

technical field [0001] The invention relates to the driving field of switched reluctance motors, in particular to a torque smoothing control method of switched reluctance motors. Background technique [0002] Switched reluctance motor (Switched Reluctance Motor, referred to as SRM) has the advantages of simple structure, firmness, low manufacturing cost, wide speed range and high efficiency, making it a new member with great potential in variable speed drive system. However, due to the double-convex plate structure and switching power supply, SRM has the inevitable disadvantage of torque fluctuation, and the noise problem caused by this hinders the further expansion of its application field. Reducing SRM torque ripple is an outstanding problem and research difficulty in the field of electric drive and motor control. [0003] The phenomenon of torque fluctuation has no effect on general production machinery due to the high pulse frequency during high-speed operation, and it ...

Claims

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Application Information

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IPC IPC(8): H02P6/10
Inventor 高超马良玉蒋哲
Owner NIDEC BEIJING DRIVE TECH CO LTD
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