Research on dual-winding permanent magnet generator system with integrated dual-channel controller

This article presents a dual-winding permanent magnet generator (PMG) system with integrated dual-channel controller to meet the requirements of high power density, high reliability, and high output performance of aircraft electric power system. The dual-winding of the PMG are designed to have the same phase spatially, with which the same rotor position can be applied in independent vector control. In addition, a dual-channel controller is applied to control the two sets of windings, which achieves high-performance control under normal state and fault-tolerant control under fault state. The integrated dual-channel controller integrates two sets of main power circuits into one controller and uses a main control unit, which simplifies the PMG system leading to reduction in the overall volume and weight. Reliability analysis of dual-winding PMG system is proposed to be compared with that of the single-winding PMG system. A dual-winding cooperative control strategy and a fault-tolerant control strategy are proposed to achieve high-performance control of DC-link voltage under normal condition and redundant functions under fault condition. As a result, the reliability of the PMG system is improved. The experimental results validate the effectiveness of the proposed PMG system and the control strategy.