Two Redundancy Generator System Based On Dual-winding Doubly Salient Electro-magnetic Motor

Doubly Salient Electro-Magnetic Generato(rDSEG) is a relatively new type of AC brushless machine,which offers an excellent balance between cost, reliability, power density,and high-speed capability.The technology of multiple channels is of help to increase the capability of the aero power-supply system. Because of its unique structure and outstanding characteristics,Multiple-channel brushless DC generator which is made up of doubly salient electro-magnetic generator is a new kind of one. It can improve the reliability of the power-supply system for helicopters.Firstly, this thesis introduces the basic structure, static characteristic and the regulator operation principle of doubly salient electro-magnetic generator system. According to the relevant mathematical model, a novel modeling method was presented by using Pspice software.Second, A doubly salient electro-magnetic generator employs two independent channels consisting of two groups three phase windings.The two channels provid power to the same load and output voltage can reach the demand through adjusting the excitation current. The hardware and software design of the digital control system of two redundancy generator systemare introduced.Last, A prototype of the system is built up. The emulational results and experiment results are obtained on the prototype,which show that the system have excellent static and dynamic characteristic and high reliability.