Study on simulation technology of APF controller based on RTDS

Abstract

To efficiently implement the technology validation and test of power electronic devices, a new test method is presented, APF controller closed-loop simulation based on RTDS. Simulate those primary circuits by software in RTDS, such as three-phase grid, load and APF inverter bridge, DC side capacitor and circuit breaker. The APF control and protection part are done through the control panel in real devices. The standard interfaces of RTDS physical controller simulation are formed by 5 signal-conditioning modules, which fix the signal mismatch between APF controller and RTDS software models. In addition, construct the overall simulation model in RTDS small-step environment and some modeling methods of core modules are presented, including IGBT trigger pulse, protection and control signal logic, short circuit fault model in RTDS, operation observation interface and etc., which establish the complete test procedures and items. In the end, the effectiveness of the method is verified through comparative analysis of the test data between RTDS and real device testing. It brings up a new idea to efficiently implement the development and test of power electronic devices.