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New permanent switch from the flux generator

Author: FangZongXi
Tutor: ShenJianXin
School: Zhejiang University
Course: Motor and electrical
Keywords: From the generator Permanent switch flux motor Finite Element Cogging torque Back EMF Rotor chute
CLC: TM31
Type: Master's thesis
Year: 2008
Downloads: 227
Quote: 2
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Abstract

From the generator to start the engine and the motor by a motor to the DC power charging system, the traditional motors, these two functions by automotive starter and generator motor to achieve. Relative to two separate motors to achieve these two features has a lot of advantages, are caused by a large degree of attention from the generator in Hyundai Motor and moderate hybrid electric vehicle applications. Since the birth of the switched reluctance motor switched reluctance motor new doubly salient motor-based research and more extensive. These new doubly salient motor windings or permanent magnets set only on the stator coil or permanent magnet rotor, rotor no layers formed by punching, thus new doubly salient motor structure is relatively simple, the production process is relatively simple, and relatively low production cost. This study is designed for cars from the generator permanent switch flux motors, permanent magnet embedded in the stator pole, it inherited a switched reluctance motor is simple structure, robustness, high reliability, etc., and also high efficiency permanent magnet motor, torque density; This type of motor also effectively eliminates the complex variable reluctance motor control, such as noise and vibration big shortcomings. This motor mechanism is: the excitation flux is always present and the same orientation, but with the change of the position of the rotor, the excitation flux switching its path, so that the size and direction of the flux within the stator windings also changes, and thus the motor concentrated winding back EMF. The motor electromagnetic properties very similar to traditional permanent magnet brushless motor so that the motor can be driven permanent magnet brushless DC or permanent magnet synchronous motor drive. Similar to traditional permanent magnet brushless machine optimized design, this article through the finite element method to calculate the 12/10 structure permanent switch flux motor back EMF, cogging torque, the static torque motor static characteristics, and as motor optimization design basis. Motor to optimize the design process, some parameters, such as motor geometric topology rotor tooth width as optimization variables, comparison of the results of the finite element analysis, and finally by considering the performance requirements of the generator to determine the amount of motor parameters. Presented and analyzed permanent switch from the flux of the generator load simulation, because from the generator require large starting torque to start the engine, also require motor power status can be run in a wide speed range, the article also simulation analysis of motor flux weakening speed performance, through the advance trigger inverter conduction angle and changing the winding connection, the motor can run in a high speed, but also verified this motor flux weakening speed capacity. Finally, the other two new structure permanent switch flux motor with the earlier analysis of the 12/10 structure back EMF comparative analysis, given the impact of the impact factor of the general permanent switch flux motor, after the study certain guiding significance.

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CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,)
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