Switched reluctance motor system based on bus current sampling and winding current obtaining method thereof

A technology of switched reluctance motor and bus current, applied in control system, motor control, AC motor control and other directions, can solve the problems of unequal gain, unbalanced voltage drop, the number of current sensors, the increase of system volume and system cost, etc. Eliminates the effects of unequal gain, reduced usage, and reduced system cost and size

Active Publication Date: 2015-07-08
ZHEJIANG UNIV
View PDF2 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used method is to place a current sensor on each phase winding for current sampling to obtain a more accurate sampling current (such as Figure 8 As shown), in a multi-phase switched reluctance motor, this will i

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
  • Switched reluctance motor system based on bus current sampling and winding current obtaining method thereof
  • Switched reluctance motor system based on bus current sampling and winding current obtaining method thereof
  • Switched reluctance motor system based on bus current sampling and winding current obtaining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to describe the present invention more specifically, the technical solutions and related working principles of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as Figure 12As shown, the switched reluctance motor system based on bus current sampling in the present invention includes a switched reluctance motor, a power converter, a speed detection device, a current detection device and a controller; the switched reluctance motor has a four-phase stator winding, and the converter is Excitation of each stator winding;

[0031] Such as Figure 9 As shown, the converter in this embodiment includes a power supply E, a DC capacitor C, eight switch tubes S1-S8, and eight diodes D1-D8; among them, the power supply U dc The anode of the DC capacitor C, one end of the switch tube S1, the cathode of the diode D1, one end of the switch tube S3, the cathode of the diode D3, one en...

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 switched reluctance motor system based on bus current sampling. The switched reluctance motor system comprises a switched reluctance motor, a power converter, a rotating speed detecting device, current sensors and a controller. The phase current of the SRM system is analyzed, the influence on the phase current waveform by different open sections is discussed, and the phase current overlapping and non-overlapping conditions in a current chopping section are analyzed. According to the phase current overlapping condition, high-frequency impulses are injected into all under-phase tubes in an overlapping section, A/D sampling is triggered at the pulse low level to discompose the direct-current bus current, the injection high-frequency impulse frequency and the A/D sampling frequency are highly synchronous, information of all the open sections is combined, phase currents in all the phase conducting sections can be effectively rebuilt, the use quantity of the sensors is reduced, the system cost and size are greatly reduced, the switched reluctance motor system is more compact, and the problem that as gains of the single current sensors of all the phases are unequal, voltage drop is unbalanced is solved.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a switched reluctance motor system based on bus current sampling and a winding current acquisition method thereof. Background technique [0002] Switched Reluctance Motor (SRM) is a micro motor developed in the 1980s. As a new type of speed control system with simple structure, good robustness and low price, it has attracted the attention of electrical appliances in various countries soon after it came out. The widespread attention of the transmission industry has become one of the most popular speed-adjusting motors in the 1980s. After the 1990s, it has gradually formed a development trend that emphasizes both theoretical research and practical application. In recent decades, with the rapid development of electronics and microelectronics, switched reluctance motor has become a new type of controllable AC speed regulation system. Such as figure 1 As shown, the system...

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): H02P6/08H02P25/08
CPCH02P6/08H02P25/08H02P2203/01
Inventor 甘醇吴建华王宁孙庆国杨仕友胡义华王晓明
Owner ZHEJIANG 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