Predictive control of DC-link current based on IPMSM discrete equation in electrolytic capacitor-less inverter

2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES) Pub Date : 1900-01-01 DOI:10.1109/IESES.2018.8349865

Yousuke Akama, K. Abe, K. Ohishi, Y. Yokokura

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Abstract

In this paper, the predictive control of DC-link current based on the IPMSM discrete equation for electrolytic capacitor-less inverter is proposed. In electrolytic capacitor-less inverters, electrolytic capacitor and power factor correction circuit are not used. Therefore, it is necessary to maintain both the input power factor and the motor control by controlling the inverter. Instantaneous voltage control has been proposed as a control method to achieve both motor control and input power factor improvement. In the instantaneous voltage control method, the DC-link current driving the motor is controlled. However, control error occurs in the DC-link current due to the sampling error in the motor current. Due to this control error, a resonance current is generated in the inductance and the DC-link capacitor. The predictive control of DC-link current proposed in this paper reduces this control error. The effectiveness of the proposed method is confirmed through simulation.

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基于IPMSM离散方程的无电解电容逆变器直流电流预测控制

提出了一种基于IPMSM离散方程的无电解电容逆变器直流电流预测控制方法。在无电解电容逆变器中，不使用电解电容和功率因数校正电路。因此，有必要通过控制逆变器来维持输入功率因数和电机控制。瞬时电压控制是一种既能控制电机又能改善输入功率因数的控制方法。在瞬时电压控制方法中，控制直流电流驱动电机。但是，由于电机电流的采样误差，直流链路电流中会出现控制误差。由于这种控制误差，在电感和直流电容中产生谐振电流。本文提出的直流链路电流预测控制减小了这种控制误差。通过仿真验证了该方法的有效性。

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2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)

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