介绍了大功率单相变频加热电源的系统组成，包括整流、滤波、逆变和控制电路等部分。
This paper introduces the system of single phase large power source varied frequency for heating, contains rectifier, filter, inverter and control circuit etc.
随后，本文给出了380V电源供电的二电平变频加热电源的主电路和控制电路的设计与实现。
Secondly, the paper designs and realizes the two level variable frequency heating power supply with line of 380V.
随后，本文给出了380V电源供电的二电平变频加热电源的主电路和控制电路的设计与实现。
Secondly, the paper designs and realizes the two level variable frequency heating power supply with line of 380V.
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