Four-direct-current-motor parallel current hysteresis fault-tolerant control method and control system

A DC motor, fault-tolerant control technology, applied in the direction of DC motor rotation control, DC motor speed/torque control, excitation or armature current control, etc., can solve problems such as equipment not working properly

Active Publication Date: 2020-07-28
CHANGAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hysteresis-loop fault-tolerant control method and control system for the parallel ...

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
  • Four-direct-current-motor parallel current hysteresis fault-tolerant control method and control system
  • Four-direct-current-motor parallel current hysteresis fault-tolerant control method and control system
  • Four-direct-current-motor parallel current hysteresis fault-tolerant control method and control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0144] Such as figure 1 and 2 As shown, a current hysteresis fault-tolerant control system of four DC motors connected in parallel in the present invention includes 4 DC motors arranged in parallel, 4 PI controllers, a reference current reconstruction module, and 5 hysteresis comparators, And a PWM module, and a five-phase voltage source fault-tolerant inverter, and a current reconstruction, fault detection and fault-tolerant control module, and a speed calculation module, and a position sensor, and a current detection sensor; the input terminal of the reference current reconstruction module Connect with 4 PI controllers respectively, the output terminal of the reference current reconstruction module is connected with the input terminals of 5 hysteresis comparators respectively; the input terminal of PWM module is connected with the output terminals of 5 hysteresis comparators respectively, and the PWM module The output end of the output terminal is connected to the five-phas...

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 four-direct-current motor parallel current hysteresis fault-tolerant control method and a control system. The control method comprises steps that a current of an output end of a five-phase voltage source type fault-tolerant inverter is subjected to a current reconstruction, fault detection and fault-tolerant control module to obtain a calculated current value, whether four direct-current motors break down or not is judged according to the calculated current value, if the four direct-current motors break down, a reference current value of the broken-down direct-currentmotors is set to be zero, and a control system comprises a direct current motor, a PI controller, a reference current reconstruction module, a hysteresis comparator, a PWM module, a five-phase voltage source type fault-tolerant inverter, a current reconstruction, fault detection and fault-tolerant control module, a rotating speed calculation module, a position sensor and a current detection sensor which are arranged in parallel. The control method is advantaged in that whether the system has the faulty motor or not is judged through fault detection, a bidirectional thyristor of a faulty motoris turned off through a control signal, normal operation of equipment is guaranteed, and the fault-tolerant capability of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of DC motor fault-tolerant control, and in particular relates to a current hysteresis-loop fault-tolerant control method and a control system of four DC motors connected in parallel. Background technique [0002] In recent years, the country has paid more and more attention to environmental protection issues. With the development of society, the number of private cars is increasing, which has a great impact on the environment. The emergence of electric vehicles has effectively solved environmental problems. The research on electric vehicle motor drive mainly focuses on the application of new motors and the improvement of the control strategy of the motor drive system. At present, electric vehicles mostly use DC brush motors, induction motors, switched reluctance motors and DC brushless motors. Since DC motor technology is well established, most electric vehicles use DC motors. Because electric vehicles wi...

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): H02P5/46H02P5/50H02P5/68H02P7/03H02P7/28
CPCH02P5/46H02P5/50H02P5/68H02P7/28H02P7/2805H02P7/05
Inventor 林海王小冬闫茂德左磊
Owner CHANGAN 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