Theoretically analyzed the cause of the non-conduction phase current with the PWM method of upper and lower bridge arm chopping by turns, and made some experiments to verify its validity.

结合上下桥臂轮流斩波PWM调制方式，从理论上分析了不导通相电流产生的原因，并进行了实验研究，表明不导通相电流的大小与不导通相的反电势大小有关。

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On the basis of the research of the phase state experiment, this article get the model of the fluid and corresponding parameter, used by compositional model, by using component chopping technique.

在须二气藏的相态实验研究基础上，通过组分劈分技术对实验相关参数进行拟合，确定出流体模型以及全组分模型所需的相关参数。

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Under the status of chopped start, no dead starting area and big start torque are assured by using the method of simultaneous two-phase chopping.

在起动斩波状态采用两相同时斩波的方法，保证了电机无起动死区和大的起动转矩。

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