Compared with the conventional HF link inverter or the DC/AC inverter with a Boost DC/DC stage, the efficiency is improved a lot, while the cost does not increase.

• 指出无论采用何种调制模式,如果在线性调制范围内要获得幅值高于给定输入直流电压的三相对称正弦波输出交流电压,必须增加一级直流环节的升压电路。