Real\|time Simulation of Excitation Converter for Doubly\|fed Induction Generator Based on FPGA

Real-time simulation of power electronic components is hard to be conducted on common simulation platform due to the high requirement of the simulation step size and the calculation accuracy. Taking doubly-fed induction generator (DFIG) with excitation realized by dual-PWM converter as research object, the hardware real-time simulation on converter model and its control system are conducted on field-programmable gate array (FPGA). Then the FPGA program is connected to the simulation program of wind turbine and DFIG, and a continuous process before and after the grid with the connection of DFIG is simulated in real time. The rationality and correctness of the FPGA implementation are verified by the analysis of the dynamic operation performance of the converter in the simulation process.