(1) according to industrial standard design, the controller adopts the structure of DSP+ ARM to complete the three-phase active grid connection experiment, which is completed by C language. Students can have a deep understanding of DSP hardware structure principle and CCS software programming (C language) through learning the experiment designed by this system. In addition, the reserved interface is convenient for users to develop and design other experiments. (2) all hardware resources are concentrated on an experimental development platform, including DSP control circuit, PWM power circuit, current and voltage sampling circuit, communication circuit, three-phase active inverter power circuit, filtering circuit, 4.3-inch color touch screen, etc. (3) openness of control program: as an experimental development platform, the openness of the core algorithm of control program should be fully considered. According to the provided system program standard interface protocol, users can write various control algorithms to embed into the provided system program, so as to verify the effectiveness and advancement of the program written. (4) supporting equipment source code, SCH, DSP program, material list, etc.