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SRM (switch reluctance machine) power circuit based on intelligent power module

A switched reluctance motor and intelligent power module technology, applied in the power supply field, can solve the problems of low integration of asymmetrical half-bridge power conversion circuits, difficulty in verification of advanced hardware design algorithms, and high operating frequency of power conversion circuits. Low capacity requirements, low power consumption, and stable work

Inactive Publication Date: 2017-12-29
李征
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high operating frequency of the power conversion circuit and the complexity of the hardware protection circuit, it brings certain difficulties to the hardware design work and the verification of advanced algorithms
The asymmetrical half-bridge power conversion circuit composed of various discrete components is not highly integrated, bulky, and the hardware protection circuit is complex, which brings certain difficulties to the realization of the optimization algorithm.

Method used

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  • SRM (switch reluctance machine) power circuit based on intelligent power module
  • SRM (switch reluctance machine) power circuit based on intelligent power module
  • SRM (switch reluctance machine) power circuit based on intelligent power module

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with drawings and embodiments.

[0017] Such as figure 1 , In the SRM power circuit, VTl~VT6 and VTl'~VT6' are six IGBTs inside two PM75RLA120s respectively, and the upper bridge arm of one piece and the lower bridge arm of the other piece constitute six switches of the power circuit. VD1~VD6 and VD1'~VD6' are the freewheeling diodes of each internal IGBT, VT1 and VT2' are the power switches of the A-phase winding of the SRM, VT3 and VT4' are the power switches of the B-phase winding of the SRM, VT5 and VT6' is the power switch of the C-phase winding of the SRM. During freewheeling, the current charges capacitor C through VD1' and VD2 loops to realize freewheeling. VD3' and VD4, VD5' and VD6 are the freewheeling circuits of the B and C phase windings, and the drive control signal of the IPM is generated by the PWM1~PWM6 contained in the DSP.

[0018] During the high-frequency switching process of IP...

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Abstract

The invention discloses an SRM (switch reluctance machine) power circuit based on an intelligent power module, and is suitable for the power field. The circuit consists of an SRM power circuit, an IPM drive circuit, and an IPM hardware protection circuit. An intelligent power module produced by the Mitsubishi Company is selected, and an IPM (Intelligent Power Module) PM75RLA120 is taken as the core for the designing of an SRM power conversion circuit. The circuit is compact in structure, is small in occupied space, is lower in requirements for the voltage capacity of a main switching device, is simple in control, is stable in operation, is good in adaptability, improves the work efficiency, is high in accuracy, and is lower in power consumption.

Description

Technical field [0001] The invention relates to a switched reluctance motor power circuit based on an intelligent power module, which is suitable for the field of power supply. Background technique [0002] The switched reluctance drive (SRD) speed control system is a speed control system composed of a double salient pole SRM, a controller, a power converter and a position detection device. Since the asymmetrical half-bridge power conversion circuit can provide completely independent control between the phases, and provide freewheeling during chopping and fast demagnetization feedback loop during commutation, while the voltage capacity requirements of the main switching device are low, and The control is simple, so the three-phase 12 / 8-pole SRM usually adopts this structure. [0003] During the development of Switched Reluctance Motor (SRM), the research on power conversion circuit has always been a hot and difficult point. Due to the high operating frequency of the power ...

Claims

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Application Information

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IPC IPC(8): H02P25/092
CPCY02P80/10
Inventor 李征
Owner 李征
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