A power conversion device

A power conversion device and asymmetric technology, which are used in output power conversion devices, AC power input conversion to DC power output, circuit devices, etc., can solve problems such as high cost and complex structure, and achieve low cost and compact hardware structure. , space saving effect

Active Publication Date: 2016-08-17
SHANDONG INST OF ADVANCED TECH CHINESE ACAD OF SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention lies in the driving and charging conversion device of the switched reluctance motor in the prior art. When charging, other devices need to be added, the structure is complicated, and the cost is high. Power conversion device for integrated switched reluctance motor drive and battery charging realized by multiplexing switching devices

Method used

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Embodiment 1

[0032] This embodiment provides a power conversion device, its structural block diagram is as follows figure 1 As shown, the grid interface module and the integrated motor drive-charging module connected to the grid interface module, the battery module connected to the integrated motor drive-charging module, and the control unit connected to the integrated motor drive-charging module module. The grid interface module is responsible for connecting with the peripheral grid and providing power to the charging mode of the integrated motor drive-charging module; the control module controls the work of the integrated motor-charging module according to a preset program to complete the motor drive mode and charging mode. The control of the battery charging mode; the battery provides energy for the motor drive mode, and stores the energy charged by the grid in the charging mode; the integrated motor drive-charging module provides the motor drive mode and the battery charging mode accordi...

Embodiment 2

[0051] In this embodiment, a power conversion device is provided, which includes four-phase motor windings. For the specific structure, see Figure 6 , including four asymmetrical half-bridge circuits, the asymmetrical half-bridge circuit formed at the A-phase winding and the B-phase winding is a step-up rectifier circuit, and the asymmetrical half-bridge circuit formed at the C-phase and D-phase winding is a lift voltage charging circuit.

[0052] In the step-up rectification circuit, the asymmetrical half-bridge circuit at winding A at winding B includes: motor winding A, one end of the motor winding A is connected to the power electronic switching device Q AH emitter and thyristor T AL The cathode is connected, and the other end is connected to the power electronic switching device Q AL collector and diode D AH The anode connection of the power electronic switching device Q AH collector of the diode D AH The cathode connection of the power electronic switching device Q...

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PUM

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Abstract

The present invention provides a power conversion device, including an asymmetrical half-bridge arranged at each motor winding, wherein in two asymmetrical half-bridge circuits serving as boost rectification circuits, the lower diodes in the half-bridge circuits are replaced by Thyristor, which includes two power electronic switching devices (IGBT or MOSFET, etc.), a diode, a controllable thyristor and a phase motor winding, and another asymmetric half-bridge used as a buck-boost charging circuit consists of two power electronics It consists of a switching device, two diodes, a phase motor winding and a contactor, and the contactor is located between the collector of the upper power electronic switching device and the cathode of the upper diode. The device provides a compensation method for static charging of the rotor through hardware topology and software algorithms, realizes static charging of the rotor in charging mode, and realizes time-division multiplexing of devices, which greatly reduces the cost of components and the complexity of circuit board wiring, making it The hardware structure is more compact.

Description

technical field [0001] The invention relates to a power conversion device for power supply and charging, in particular to a power conversion device integrating switching reluctance motor driving and battery charging. Background technique [0002] Switched reluctance motor is a new type of speed regulation motor. The speed regulation system has the advantages of both DC and AC speed regulation systems. It is the latest generation of stepless speed regulation system following the frequency conversion speed regulation system and brushless DC motor speed regulation system. The driving circuit of the switched reluctance motor in the prior art mainly includes a DC power supply, a DC capacitor, an N-phase motor winding, an upper switching device, a lower switching device, an upper freewheeling diode and a lower freewheeling diode. The main function of the above-mentioned DC capacitor is to provide a buffer for the rectification circuit or the battery, and stabilize the DC bus volta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/219H02J7/10
Inventor 梁嘉宁徐国卿蹇林旎李卫民常明
Owner SHANDONG INST OF ADVANCED TECH CHINESE ACAD OF SCI CO LTD
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