Electronic Science and Technology ›› 2021, Vol. 34 ›› Issue (11): 88-94.doi: 10.16180/j.cnki.issn1007-7820.2021.11.014

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Study on Six Pulse Double Variable AC-AC Frequency Converter with Step Frequency, Voltage and Speed Regulation

ZHOU Jiuling1,MENG Juanjuan2,LI Yudong1   

  1. 1. School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454003,China
    2. School of Continuing Education,Henan Polytechnic University,Jiaozuo 454000,China
  • Received:2020-07-03 Online:2021-11-15 Published:2021-11-16
  • Supported by:
    Natural Science Foundation of Henan(182300410480)


In the six pulse dual variable cycloconverter, there are some problems such as weak anti-interference ability and narrow speed range in the intermediate frequency band.Based on six pulse dual variable frequency conversion, the control strategy of frequency conversion combined with closed-loop voltage regulation in medium frequency band is proposed. After the frequency conversion, this method changes the output voltage through closed-loop control to control the speed. Subsequently, a MATLAB simulation model is built, and the trigger pulse is controlled by S-function, the control effect of the combination of frequency conversion and closed-loop voltage regulation are verified in the case of motor speed and torque mutation. The MATLAB simulation results show that the control strategy cannot only reduce the memory space of the system and improve the running speed, but also increase the speed range of the medium frequency band and the robustness of the motor.

Key words: bivariate, stepwise frequency conversion, switching mode, intermediate frequency section, robustness, closed-loop voltage regulation, speed range, S function

CLC Number: 

  • TN77