双PWM一体化控制策略研究

Study on Control Strategy of Double PWM

双PWM整流侧独立于电机侧的传统控制方式会导致的直流母线电压不稳定,为改善这一缺点,该文给出四种双PWM一体化控制策略:直流母线加装电流传感器、基于功率平衡、负载电流前馈、对直流充电电容与电感压降前馈补偿的控制策略,建立MATLAB仿真模型,并验证了双PWM一体化控制策略具有可行性。

The traditional control way that converter side and motor side are controlled respectively can cause the unstablity of DC bus voltage. To improve the shortcoming, this paper gives four integrated control strategies：the control strategy-assembling current sensor on direct current bus,the control strategy based on power balance, the control strategy based on load current feed forward, and the feed-forward compensation strategy based on capacitor charging balance inductance voltage drop. The MATLAB simulation model is established to verify the feasibility of double PWM integrated control strategy.