Power Electronic System And Method For Synchronizing Power Modules

A method for synchronizing power modules of a power electronic system for operating a load, the system including a number of power modules connected to the load, each of the power modules comprising at least one switching element and a local actuator, a superordinate controller for actuating the number of power modules to operate the load, a device bus connected to the superordinate controller and to the number of power modules and via which the control signals for actuating the number of power modules are transmitted during operation of the system, the superordinate controller transmitting the control signals for the switching states of the system in respective messages at predefined intervals of time to the number of power modules via the device bus, and all power modules configured to scan a first communication edge of a respectively received message from the controller and process it as a common time base of the system for processing the control signals, the method comprising:

• transmitting the control signals for actuating the number of power modules for the switching states of the system in respective messages at predefined intervals of time from the controller to the number of power modules via the device bus;
• scanning a first communication edge of a respectively received message from the controller;
• and
• processing the scanned first communication edge as a common time base of the system for processing the control signals.