利用有源钳位电路实现主变压器铁心对称复位，功率开关在宽输入电压和宽负载电流范围内零电压开关。
By using an active clamp circuit, the power transformer core is symmetrically reset. Zero voltage switching conditions are achieved over a broad input voltage and output current range.
本文提出了一种新型的零电压零电流开关pwm推挽三电平直流变换器，其中开关管的电压应力为输入电压。
This paper presents a novel zero voltage and zero current switching (ZCS) PWM push pull three level converter in which the voltage stress of switches is input voltage.
提供了该变换器两个死区时间的设计方法，从而保证了开关电压应力限制在输入电压的一半，同时满足每个开关零电压关断的实现条件。
The design consideration for two dead times is presented to assure that voltage stress for main switches is within half of input voltage and ZVS for each main switch is achieved.
三电平桥臂的开关管的电压应力为输入电压的一半，可在宽负载范围内实现零电压开关；两电平桥臂的开关管的电压应力为输入电压，它们利用变压器的漏感来实现零电压开关；
The voltage stress of the switches of the three-level leg is the half of the input voltage, and the switches can realize ZVS in a wide load range.
三电平桥臂的开关管的电压应力为输入电压的一半，可在宽负载范围内实现零电压开关；两电平桥臂的开关管的电压应力为输入电压，它们利用变压器的漏感来实现零电压开关；
The voltage stress of the switches of the three-level leg is the half of the input voltage, and the switches can realize ZVS in a wide load range.
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