Circuit system having at least two inverter modules connected in parallel, method for connecting at least two inverter modules in parallel and circuit substrate for a gate driver circuit of an inverter module

A method for connecting at least two inverter modules in parallel, each of the inverter modules including an inverter circuit having power semiconductor circuit breakers, and a gate driver circuit for controlling the power semiconductor circuit breakers, the method comprising:

• connecting the inverter modules so that a control signal transmitted by a gate driver circuit of a first one of the inverter modules from a low-voltage side to a high-voltage side, at least one of the high-voltage side control signal or a control signal deduced therefrom is transmitted to the gate driver circuits of the inverter modules connected in parallel, and the power semiconductor circuit breakers of the inverter circuits of the inverter modules connected in parallel are controlled based on the transmitted control signal.

A circuit substrate for a gate driver circuit of an inverter module, wherein the gate driver circuit is used for controlling power semiconductor circuit breakers of an inverter circuit of the inverter module, the circuit substrate being equippable in a first partial region with components for implementing a signal transmission of a control signal from a low-voltage side to a high-voltage side, and the circuit substrate comprising:

• at least one first driver output contact point via which one of the high-voltage side control signal or a control signal deduced therefrom is transmittable to gate driver circuits of inverter modules connected in parallel to the inverter module;
• and
• at least one first driver input contact point via which one of a high-voltage side control signal or a control signal deduced therefrom is receivable based on which power semiconductor circuit breaker of the inverter module connected in parallel are controlled.