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Single power converter drive-based double-switch reluctance motor operation control system

A technology of switched reluctance motors and power converters, applied in control systems, multiple motor speed/torque control, AC motor control, etc., can solve problems such as mutual interference, affecting motor stability and reliability, and achieve guaranteed The effect of stability and reliability

Active Publication Date: 2016-09-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a power converter is used, and the corresponding stator windings of two switched reluctance motors are simply connected in series or in parallel for control, it will cause mutual interference between the stator coils of the two motors and affect the stability of the motor during operation. sex and reliability

Method used

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  • Single power converter drive-based double-switch reluctance motor operation control system
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  • Single power converter drive-based double-switch reluctance motor operation control system

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Embodiment Construction

[0050] In order to describe the present invention more specifically, the technical solution of the present invention and its related working principles will be described in detail below in conjunction with the accompanying drawings and specific implementation methods, taking two three-phase 12 / 8-pole SRMs as an example.

[0051] Such as Figure 4 As shown, the operation control system of dual switched reluctance motors driven by a single power converter includes a DC power supply, two switched reluctance motors, a power converter, a position detection device, a current detection device and a controller. The DC power supply provides excitation for two switched reluctance motors; the two switched reluctance motors are three-phase 12 / 8 structure motors and are in synchronous operation state, and the three-phase stator windings of motor 1 are A 1 , B 1 and C 1 , the three-phase stator windings of motor 2 are A 2 , B 2 and C 2 ;The power converter controls the on-off of the st...

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Abstract

The invention discloses a single power converter drive-based double-switch reluctance motor operation control system, which comprises a DC power supply, two switch reluctance motors, an asymmetrical half-bridge power converter with a traditional structure, a position detector, six current sensors and a controller. By the system, operation drive of the two switch reluctance motors can be achieved only by one power converter; and the two motors are individually controlled. Various phase stator coils are connected to different bridge arms, so that various phase currents are not mutually affected. Meanwhile, higher torque can be output to bear a higher load under the condition of not increasing the system cost and a fault; and the stability and the reliability of the motor operation system are ensured.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to an operation control system of a double switched reluctance motor driven by a single power converter. Background technique [0002] Switched reluctance motor (SRM) is a new type of motor. It has no winding on the stator and does not require permanent magnet materials. Because of its simple structure and firmness, it has high efficiency, good reliability, large starting torque, and good fault tolerance. A series of advantages make it a very competitive motor. In recent decades, switched reluctance motors have developed rapidly and have received more and more attention, and have been applied to varying degrees in fields such as electric vehicles, household appliances, aviation, and general industry. [0003] The operation of SRM follows the "minimum reluctance principle", that is, the magnetic flux always closes along the path of the least reluctance, so that the rotor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/04H02P25/092
CPCH02P6/04
Inventor 甘醇吴建华孙庆国胡义华王宁杨仕友
Owner ZHEJIANG UNIV
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