The kernel control module is used for controlling the variable-frequency contravariant module and the power factor correction module;
核心控制模块，用于控制变频逆变 模块和功率因数矫正模块；
The model setting up method of the three module which include power factor correction circuit, two-transistor forward converter, secondly chopper circuit, is discussed in detail.
分别讨论了功率因数校正模块、双正激变换电路模块和二次斩波模块的建模方法。
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