分析了带微分环节的电压滞环的变环宽的原理，指出带微分滞环控制的脉宽调制(PWM)变换器可作为理想的可控电压源。
The paper analyzed the voltage hysteresis with differentiation elements, and pointed out that the PWM converter with differentiation hysteresis controls can be used as the ideal voltage source.
串联控制器等效为一个受控电压源，补偿来自电网侧的电压谐波和抑制电压波动，提高配电系统的供电电压质量；
The series controller is equivalent to the controlled voltage source that compensating the voltage harmonic and the voltage fluctuation from the power system.
在基于电压源换流器的高压直流输电(VSC - HVDC)交直流混合风电场并网系统中，控制VSC - HVDC送端站注入到PC C点的无功功率可以抑制电压波动。
In hybrid wind farm integration system based on HVDC of voltage source converter (VSC-HVDC), the voltage fluctuation can be alleviated by compensating reactive power to PCC from VSC-HVDC sending end.
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