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LI Zhaoping, ZHANG Hongjuan, JIN Baoquan, GAO Yan, HUANG Fei, WANG Yuxing. Optimization strategy of switching modulation of mine—used high—voltage frequency converter[J]. Journal of Mine Automation, 2018, 44(11): 91-95. DOI: 10.13272/j.issn.1671—251x.2018050033
Citation: LI Zhaoping, ZHANG Hongjuan, JIN Baoquan, GAO Yan, HUANG Fei, WANG Yuxing. Optimization strategy of switching modulation of mine—used high—voltage frequency converter[J]. Journal of Mine Automation, 2018, 44(11): 91-95. DOI: 10.13272/j.issn.1671—251x.2018050033
shu

Optimization strategy of switching modulation of mine—used high—voltage frequency converter

  • 1.

    College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China

  • 2.

    Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China

  • 3.

    Shanxi Fenxi Heavy Industry Co., Ltd., Taiyuan 030027, China

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    • Abstract
  • For problems of high switching loss and power quality distortion when carrier modulation PWM control method were used in mine—used high—voltage frequency converter. Sinusoidal modulation wave was optimized based on carrier—in—phase disposition PWM control method. The sinusoidal modulation wave is superimposing with the third harmonic and direct current component, so as to obtain an optimized modulation wave with saddle—shaped modulation wave in positive half—cycle and trapezoidal modulation wave in negative half—cycle. The simulation results show that DC voltage utilization of frequency converter is improved, switching loss and total harmonic distortion of output line voltage is reduced by use of the optimized modulation wave.
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