不需要任何辅助开关或无源谐振网络，变换器就可在双向变换工作中实现零电压开关。
Without the need of any auxiliary switches or complex passive resonant network, the converter can achieve ZVS in both forward and backward modes.
分析表明，即使系统不存在零序回路，DVR都会在补偿控制中向系统注入微小的零序分量，该零序分量会对无零序回路系统侧电压造成不良影响。
It shows that DVR will inject small zero sequence component into the power system during compensation control even if there is no zero sequence circuit. This will influence the voltage on system side.
用此一性质可将偏置电压调制为零省去偏置系统，利于系统集成，为实现无偏压双稳系统指明了方向。
Thus, the bias voltage could be modulated to be 0. This saved the bias setup is benefited to system integration and pointed out way of realizing biasless bistable device.
与基本ZVS三电平变换器相比，该变换器具有辅助网络简单、实现零电压范围宽、副边无电压过冲和占空比丢失以及控制方式灵活等优点。
It has many remarkable advantages such as simple auxiliary circuit, realizing ZVS in the wide load range, no voltage spike and surge of the transformer secondary side and easy to be controlled.
为此，提出了新的控制策略，该控制策略通过检测并消除指令中的零序分量，以破坏无零序电流回路系统的零序电压正反馈条件，消除DVR注入零序电压的不良影响。
So a new control strategy is proposed to detect and suppress the influence of zero sequence component injected by DVR. Simulation results show that the proposed strategy is co…
为此，提出了新的控制策略，该控制策略通过检测并消除指令中的零序分量，以破坏无零序电流回路系统的零序电压正反馈条件，消除DVR注入零序电压的不良影响。
So a new control strategy is proposed to detect and suppress the influence of zero sequence component injected by DVR. Simulation results show that the proposed strategy is co…
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