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Power converting device integrated with switch magnetic resistance motor driving and cell charging

A technology for power conversion devices and reluctance motors, which is applied to battery circuit devices, circuit devices, collectors, etc., and can solve problems such as high cost and complex structure

Active Publication Date: 2014-03-19
SHANDONG INST OF ADVANCED TECH CHINESE ACAD OF SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Power converting device integrated with switch magnetic resistance motor driving and cell charging
  • Power converting device integrated with switch magnetic resistance motor driving and cell charging
  • Power converting device integrated with switch magnetic resistance motor driving and cell charging

Examples

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Embodiment 1

[0028] This embodiment provides a power conversion device integrating switched reluctance motor driving and battery charging, and its structural block diagram is as follows figure 1 As shown, it includes a control module and an integrated motor drive-charging module connected to the control module. The integrated electrode drive-charging module is connected to the grid interface and the battery respectively, and the charging and charging of the battery is realized through the integrated motor drive-charging module. The motor is driven by the battery. The power conversion device integrated with switched reluctance motor driving and battery charging described in this embodiment includes three-phase motor windings, which are winding A, winding B and winding C, respectively. An asymmetrical half-bridge circuit is formed at each phase motor winding, such as figure 2 As shown, the asymmetrical half-bridge circuit at winding A includes: motor winding A, one end of the motor winding...

Embodiment 2

[0039] As a further implementation, this embodiment provides a power conversion device that integrates switched reluctance motor drive and battery charging. On the basis of the above embodiments, the power conversion device in this embodiment also includes a locking structure. When charging The rotor is fixed by the locking structure. Since the phase inductance of a switched reluctance motor varies with the position of the rotor, fixing the position of the motor rotor helps to reduce the amount of variation in phase inductance with rotor position. Generally speaking, the rotor can be fixed in any position during charging. Through the analysis of the device, it is a better charging position to fix the rotor at the position where the stator pole centerline of the motor phase corresponding to the motor winding of the contactor switch and the rotor pole centerline coincide with each other when charging. The location is also suitable for charging at the same time. Since the charg...

Embodiment 3

[0048] The power conversion device integrated with switched reluctance motor drive and battery charging in this embodiment is set for a four-phase motor, so it includes a four-phase motor winding, see Figure 5 , including windings A, B, C, and D, forming four H-shaped asymmetrical half-bridges. Each half-bridge consists of semiconductor switching devices (Q AH and Q AL , Q BH and Q BL , Q CH and Q CL , Q DH and Q DL ), semiconductor diode (D AH and D AL 、D BH and D BL 、D CH and D CL 、D DH and D DL ), and one-phase winding (A-phase winding, B-phase winding, C-phase winding, D-phase winding) in the switched reluctance motor, in which the semiconductor switching device uses IGBT or MOSFET and other related switching devices, and the switching device has diodes in parallel. Also includes energy storage device (battery), capacitor C connected to the bus 1 and capacitance C 2 , There is also a contactor, the contactor disconnects both ends of the contactor through...

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Abstract

The invention provides a power converting device integrated with switch magnetic resistance motor driving and cell charging. The power converting device comprises H-type asymmetric half bridges arranged at each motor winding, the windings are at least three phases, an asymmetric half bridge circuit formed by each motor winding is arranged at two ends of an energy storing module in parallel, a voltage stabilization capacitor is connected in parallel with the asymmetric half bridge circuits, two ends of the energy storing module are provided with charging capacitors in parallel, in one of the asymmetric half bridge circuits, a switch part is arranged between a second electrode of a first electric power electronic switch device and a cathode of a second diode, the voltage stabilization capacitor and the charging capacitors are respectively arranged at two sides of a contactor switch, and an alternating current electric network single-phase power source is respectively connected with the other two asymmetric half bridge circuits through electric network interfaces. The power converting device realizes dual function time division multiplexing of motor driving and cell charging, effectively avoids disadvantages of extra additionally-arranged devices, complex structure and high cost in the prior art and has advantages of simple structure, low cost and convenient use.

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 Applications(China)
IPC IPC(8): H02P6/08H02J7/00
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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