https://orcid.org/0000-0003-4558-8891
ABSTRACT
This paper presents a study on the influence of different rectifiers on a super-high-speed permanent magnet generator (SHSPMG), which is used in a micro-gas turbine distributed generation system. Taking a 117 kW, 60,000 r/min SHSPMG as an example, the influence of PWM and uncontrolled rectifiers on the generator performances were studied comparatively. The current harmonics and its total harmonic distortion were analysed firstly, and the variation characteristics of voltage and current harmonics were obtained. Based on the 2-D electromagnetic analysis model, the losses of the generator with different rectifier load were studied, especially for the rotor losses, and the mechanisms of the losses variation were determined. By using the method of the 3-D coupling field between fluid and temperature, the temperature distributions of the SHSPMG connected with the PWM and uncontrolled rectifiers were calculated, respectively, and the influences of the different rectifiers on the generator temperature field were studied. It could be found that the PWM rectifier has the advantages of reducing generator losses and optimizing temperature distribution.
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Notes on contributors
Hongbo Qiu
Hongbo Qiu He received the Graduation degree from the Harbin University of Science and Technology, Harbin, China, and the Ph.D. degree in electrical engineering from the same university in 2014. He has been with the Zhengzhou University of Light Industry, Zhengzhou, China, since 2014. His research interests include electromagnetic and thermal analysis on electrical machine, especially in permanent magnetic machines.
Xifang Zhao
Xifang Zhao He is pursuing the M.S. degree at the Zhengzhou University of Light Industry of China. His current research interests include electromagnetic and thermal analysis on high speed permanent magnet generator.
Yanqi Wei
Yanqi Wei He received M.S. degree from Zhengzhou University of Light Industry, Zhengzhou, China, in 2019. His current research interests include electromagnetic analysis on high speed permanent magnet generator.
Bingxia Tang
Bingxia Tang She received M.S. degree from Zhengzhou University of Light Industry, Zhengzhou, China, in 2018. Her current research interests include research on electromagnetic and thermal analysis on electrical machines, particularly on high-speed permanent magnet machines.
Ran Yi
Ran Yi She received the M.S. degree from the Harbin University of Science and Technology, Harbin, China, in 2012. She has been with the Zhengzhou University of Light Industry, Zhengzhou, China, since 2014. Her research interests include research on electromagnetic and thermal analysis on electrical machine, particularly in superconducting machines.
Guangzhao Cui
Guangzhao Cui He studied in Huazhong University of Science and Technology in 2003, and successively obtained a M.S. degree and a Ph.D. degree. He is currently a Professor with the College of Electrical and Electronic Engineering, Zhengzhou University of Light Industry, China. His research interests include the control of intelligent electrical apparatus and the design of intelligent electrical equipment
Cunxiang Yang
Cunxiang Yang He received the M.S. degree from Southeast University of China, in 1996. He is currently a Professor with the College of Electrical and Electronic Engineering, Zhengzhou University of Light Industry, China. His research interests include the diagnosis of electric motors and the control of intelligent electrical apparatus.