From the view of switch utilization ratio, the theory gist is given for employing which circuit in condition with different total harmonic distortion of load current to correct harmonic current.

从开关利用率的角度，为不同负载电流畸变率情况下选取何种电路进行谐波补偿，提供了理论依据。

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This paper introduces the automatic control circuit time in turn driven by inverter with the using and the reserved load and combined switch connection.

介绍变频器驱动一用一备负载的自动定时轮换控制电路及组合开关联接。

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A reasonable nonlinear model for transformer switch-in with load was proposed in this paper and multivalued hysteresis characteristic was adopted to be the excitation characteristic of the core.

建立了一个比较合理且精确的变压器有载合闸的非线性数学模型，铁芯的励磁特性采用了多值磁滞特性。

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