Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof

A technology of switched reluctance motor and power converter, which is applied in torque ripple control, conversion of irreversible DC power input into AC power output, conversion of AC power input into DC power output, etc., and can solve problems such as motor efficiency reduction , achieve the effects of shortening the commutation time, improving motor efficiency, reducing cost and volume

Active Publication Date: 2015-05-20
JIANGSU UNIV
View PDF5 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Advanced control algorithms such as direct instantaneous torque can reduce torque ripple without changing the structure of the motor, but it n

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof
  • Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof
  • Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with the embodiments in the accompanying drawings.

[0020] The dual-bus power converter of the present invention is as figure 1 As shown, it consists of auxiliary power supply and basic power converter. Auxiliary power supply including power switch S a , Diode D s1 , power side capacitance C 1 and high voltage capacitor C 2 (second capacitance). A basic power converter includes a switching device S for one phase x and a diode D x (x indicates different phases), when the switching device is turned on, the winding current rises, and the output torque of the motor increases; when the device is turned off, the winding current is released through the diode, reducing the motor output torque. The three phases have the same structure and together form a basic power converter.

[0021] Figure 1 to Figure 5 The symbols in represent respectively: U 1 Is the input power supply, the main power supply fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a double-bus power converter for inhibiting the torque pulsation of a switched reluctance motor and a control method thereof. The double-bus power converter comprises an auxiliary power supply and a basic power converter; the auxiliary power supply comprises a power changeover switch Sa, a diode Ds1, a power side capacitor C1 and a high-voltage capacitor C2; one phase of the basic power converter comprises a switching device Sx and a diode Dx, and when the switching device conducts, winding current increases and motor output torque increases; when the switching device is switched off, the winding current is released via the diode, and the motor output torque decreases. The invention has the following advantages: only a half of controllable power devices are used, so the cost and size of the power converter are reduced; the energy of the degaussing winding of the motor is sufficiently utilized by the auxiliary power supply, so the efficiency of the motor is increased; because the voltage of the auxiliary power supply is 3 to 4 times higher than the voltage of a main power supply, the phase change time of the motor is shortened remarkably, consequently, the control method does not need advance turn-on angle and turn-off angle, and thereby the control policy is simplified.

Description

technical field [0001] The invention relates to a double-bus power converter capable of suppressing torque ripple of a switched reluctance motor and a control method thereof, and belongs to the technical field of motor power converter topology and control. Background technique [0002] The switched reluctance motor (Switched Reluctance Motor, SRM) only has windings on the stator, and the rotor is composed of silicon steel sheets. It is not only strong in structure, easy to process, and low in cost, but also flexible in control and high in efficiency. Electrical appliances have been used to a certain extent. But SRM's doubly salient pole structure and time-varying nonlinear electromagnetic characteristics make its torque ripple and noise larger, which limits its application range. Although the optimization of the motor body structure can reduce the torque ripple, it increases the difficulty of motor manufacturing. Advanced control algorithms such as direct instantaneous tor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02P6/10H02M7/48
CPCH02M7/48H02M7/493H02P6/10
Inventor 张超张舒辉韦庭
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap