Research On Permanent Magnet Synchronous Generator And Apply In Hybrid Electric Vehicle

With the global energy crisis and environmental pollution becomes more and more serious, automobile energy saving and environmental protection performance received more and more attention. Effectively combining advantages of the traditional fuel vehicle and pure electric vehicle, Hybrid Electric Vehicle(HEV), thanks to its high energy efficiency, energy diversity and environmental characteristics, has become one of the practical ways to solve the problem of energy saving and environmental protection. Served as an important part of HEV, Auxiliary Power Unit(APU) has vital significance for energy conservation and emission reduction. Permanent Magnet Synchronous Generator(PMSG), as one of the core components of APU, therefore, how to effectively control PSMG to play an important role in APU is one of the key techniques in the development of HEV.This paper introduces the background and the classification of HEV, Research Status and Research Significance of PMSG and Auxiliary Power Unit of Series Hybrid Electric Vehicle (SHEV), and introduces the theory of nonlinear control.system.Structure, Working Princiole and the establishment of Mathematical Model of PMSG are studied. The tracking control problem of the target speed and power tracking was investigted for PMSG, in the light of the inherent nonlinearity and the uncertainty caused by the parameter perturbation as well as the load disturbance in actual system, by constructing proper Lyapunov function, a Robust controller of PMSG was designed, based on Robust Backstepping method, Decoupling control technique and L2-gain disturbance attenuation technique, the controller think the d-q axis voltage of PMSG and the driving torque of the engine as control input, with speed and the d-q axis current of PMSG as state variable. Theoretical analysis shows that the designed controller can guarantee the stability of closed-loop system in the case of the presence of external interference, Simulation results illustrate that the designed controller can guarantee fast tracking performance and better anti-interference performance in the system dynamic process for control objectives.Structure, Operation Model and Mathematical Model of APU of SHEV on PSMG are studied; The dynamic mathematical model of the entire system is established by analysis of mathematical model of the engine. PMSG and three-phase rectifier bridge. The tracking control problem that APU of SHEV on PSMG recharged the car battery on a multiple constant current was investigated for SHEV, in the light of the inherent nonlinearity and the uncertainty caused by the load disturbance in actual system, by constructing proper Lyapunov-Krasovskii function,a nonlinear controller of APU system of SHEV on PMSG is designed, based on nonlinear Backstepping method. Decoupling control technique and L2-gain disturbance attenuation technique, the controller think engine air intake and the d-q axis voltage of PMSG as control input, with pressure of intake manifold of the engine, speed and the d-q axis current of PMSG as state variable. Theoretical analysis shows that the designed controller can guarantee the stability of closed-loop system in the case of the presence of external interference. Simulation results illustrate tthat the designed controller can guarantee fast tracking performance and better anti-interference performance in the system dynamic process for control objectives.