To meet the requirements of various power supply conditions in the process of some industrial products test , this pa-per gives a design of a three-phase controllable AC power supply system.The system can simulate the normal operation power grid, the abnormal operation power grid and power grid of failure condition.According to various actual working conditions, the paper puts forward the overall design of the system, design of main circuit and control system design.In addition, we set up a system simulation model by Matlab .The simulation results show the effectiveness of the system control algorithm .This study also provides a subsequent theoretical basis for the development of the real machine .%针对部分工业产品测试过程中对各种供电状况的需求，设计出一种三相可控交流电源系统，能够模拟电网正常运行、不正常运行以及发生故障情况下的电网供电状况。综合各种实际工况，给出系统的总体设计、主电路设计和控制系统设计。在Matlab中建立了系统仿真模型，仿真结果表明了系统控制算法的有效性，为后续实体机的研制提供了理论基础。
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