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Motor driving apparatus having DC link voltage regulating function
Motor driving apparatus having DC link voltage regulating function
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机译:具有直流环节电压调节功能的电动机驱动装置
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摘要
A motor driving apparatus comprises: an AC/DC converter which converts AC voltage supplied from an AC power source into DC voltage through PWM switching control of a power switching device; and a DC/AC converter which converts the DC voltage into variable-frequency AC voltage for driving a motor in a controlled manner. The AC/DC converter includes: a control unit which generates, based on an error between the DC voltage and a DC voltage command value, a PWM signal for the PWM switching control of the power switching device; and a frequency/gain varying unit which sets the frequency of the PWM signal to be generated by the control unit and a control gain in the control unit higher than their normal levels during a period in which a load in the DC/AC converter varies.
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机译:一种电动机驱动装置,包括:AC / DC转换器,其通过电力开关装置的PWM开关控制将从交流电源提供的交流电压转换成直流电压;以及直流/交流转换器,其将直流电压转换成变频交流电压以受控地驱动电动机。 AC / DC转换器包括:控制单元,其基于DC电压和DC电压命令值之间的误差,生成用于电力开关装置的PWM开关控制的PWM信号;频率/增益变化单元,在DC / AC转换器的负载变化的期间,将要由控制单元生成的PWM信号的频率和控制单元中的控制增益设定为高于其正常水平。
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