本发明涉及具有至少一个DC链路电感的并联谐振电路。 为了确保逆变器在不同的负载下启动，监控放电充电电容时在负载上形成的电压。 最早达到最大电压时，另一个外部充电的电容器通过逆变器的晶闸管放电，逆变器位于直流链路电感的供电电路中。 由于锁定晶闸管和电容器充电到最大电压，泄漏电流被强制流过包括负载在内的对角线分支。 通过这种方式，即使负载具有不同的固有频率，也可以安全地启动逆变器。

The invention relates to a Parallelschwingkreisumrichter with at least one intermediate-. In order to ensure the start of the inverter even when unterschiedllichen loads developing during the unloading of a stranger charged capacitor across the load voltage is monitored. At the earliest when the maximum voltage, another alien charged capacitor is discharged through a thyristor of the inverter, which is in the intermediate-Vorflutkreis. The Vorflutstrom is forced due to the blocked thyristor and the charged voltage on the capacitor maximum, to flow over diagonally opposite branches including the load. In this manner, a reliable start of the inverter is possible even with loads of different natural frequency.