WAN Jun, WANG Yu, WEN Xiaofei. MSHE-PWM harmonic suppression method of mine hoist active front end[J]. Journal of Mine Automation, 2015, 41(3): 19-23. DOI: 10.13272/j.issn.1671-251x.2015.03.005
Citation: WAN Jun, WANG Yu, WEN Xiaofei. MSHE-PWM harmonic suppression method of mine hoist active front end[J]. Journal of Mine Automation, 2015, 41(3): 19-23. DOI: 10.13272/j.issn.1671-251x.2015.03.005

MSHE-PWM harmonic suppression method of mine hoist active front end

  • In view of problem of harmonic pollution and system loss of active front end of 10 kV high voltage mine hoist, MSHE-PWM harmonic suppression method was proposed. ANPC five-level topology mathematical model was established to analyze MSHE-PWM harmonic suppression principle and solve MSHE-PWM nonlinear equations under constraint conditions. Voltage balance control method of suspended capacitor was also given. The results of MSHE-PWM performance test based on 1 MW industrial prototype show that SHE-PWM technology achieves grid side low-order harmonic control of 10 kV high voltage mine hoist, and comparison experiment with SV-PWM further demonstrates superiority of MSHE-PWM in solving problems of temperature-rise and loss of 10 kV high voltage inverter system.
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