变频器基本组成 |
添加时间:2018/8/13 15:16:20 浏览次数: |
变频器基本组成 Basic composition of frequency converter 变频器通常分为4部分:整流单元、高容量电容、逆变器和控制器。 Frequency converters are usually divided into 4 parts: rectifier unit, high capacitance capacitor, inverter and controller. 整流单元:将工作频率固定的交流电转换为直流电。 Rectifier unit: converts the alternating current with fixed frequency to direct current. 高容量电容:存储转换后的电能。 High capacity capacitance: stored energy after conversion. 逆变器:由大功率开关晶体管阵列组成电子开关,将直流电转化成不同频率、宽度、幅度的方波。 Inverter: An electronic switch composed of a high-power switch transistor array converts direct current into square waves of different frequencies, widths and amplitudes. 控制器:按设定的程序工作,控制输出方波的幅度与脉宽,使叠加为近似正弦波的交流电,驱动交流电动机。 Controller: According to the set program, control the amplitude and pulse width of the output square wave, so that the superposition of approximately sinusoidal AC, drive AC motor. |
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