Research On A Double-Winding Permanent Magnet Synchronous Wind-Driven Generator With Dual Rectifier Parallel Output

Permanent magnet synchronous generator in small wind power generation has a very wide range of applications, objectives for all aspects of the study on permanent magnet synchronous generators were to improve output power as much as possible with the same circumstances. Therefore, this paper proposes a permanent magnet synchronous generator with dual rectifier parallel output, through the double-winding configuration, the system has high power density, high efficiency, and low cost. The content of this paper is mainly about the following aspects:First, the structure and principle of permanent magnet synchronous generator with double-winding is analyzed and a mathematical model is established. Including the identification of the expression of the winding self and mutual inductances, the current equation and voltage equations, the relationship between the air gap harmonic magnetic potential and harmonic current windings;Second, the design method of this structure of generator is studied, including the method to determine the main dimensions and parameters, and the method to determine the size of the permanent magnet, winding turns and other specific design parameters is proposed;And then to analyze the finite element simulation including magnetic field, electrical output characteristics. The simulation and analytical calculation results are compared to analyze the system under the dual rectifier, the generator rotor winding phase structure and the impact on system performance;Finally, a prototype has been made, and its experimental has been taken, the actual operating characteristics of the generator have been analyzed, to see whether it meets the performance requirements.