关键词: 涡轮发电机, 外转子, 参数设计, COMSOL软件

Abstract:

An external rotor turbine generator for underground power supply was designed.The parameters and dimensions of the generator were obtained by electromagnetic calculation under the constraint of generator outer diameter.The electromagnetic field of the designed generator was simulated by COMSOL. The output voltage and flux distribution of the generator at rated speed of 2 000 r/min were obtained.The prototype was tested.The test results show that the test data were in good agreement with the simulation results, which verifies the rationality of the external rotor generator model. The output voltage of the turbogenerator at rated speed was 9.5 V and the output power was 13.5 W when the load was 20 Ω.The output waveform of the generator tends to sinusoidal wave smoothly,which can meet the requirements of power supply.

Key words: turbine generator, outer rotor, parameter design, COMSOL