Research on Unbalanced Load Suppression Method of Auxiliary Inverter

  • Yong Ding
  • Linghang Huang
  • Jie Chen
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 482)


This paper focuses on how to suppress the effect of unbalanced load on the output voltage distortion of the auxiliary inverter. The auxiliary inverter in this paper uses a split-capacitor inverter topology with a midline inductor to suppress the effect of unbalanced load. In this paper, the auxiliary inverter is split into three independent single-phase inverters, respectively, to control the fundamental impedance of each single-phase inverter to obtain excellent output voltage waveform. Each single-phase inverter control system uses voltage and current double-loop control strategy, the voltage outer ring with a new resonant controller, not only can inhibit the unbalanced load on the auxiliary inverter output voltage distortion, and can balance the split capacitor voltage. Finally, a virtual DSP system based on S-Function is constructed. The simulation results show that the new resonant controller can suppress the effect of unbalanced load on the output voltage distortion of the auxiliary inverter.


Auxiliary inverter Unbalanced load Split capacitor inverter New resonant controller 



This work was supported by National Key R&D plan under Grant 2016YFB1200502-4 and 2017YFB1200802, Beijing Science and School level project 2016RC038.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.CRRC Changchun Railway Vehicles CO., LTDChangchunChina
  2. 2.School of Electrical EngineeringBeijing Engineering Research Center of Electric Rail Transportation, Beijing Jiao Tong UniversityBeijingChina

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