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Machine design and control strategy for wide-speed-range PMSG systems

Jianxin Shen (Department of Electrical Engineering, Zhejiang University, Hangzhou, China)
Dong-Min Miao (Department of Electrical Engineering, Zhejiang University, Hangzhou, China)



The purpose of this paper is to focus on the machine design and control strategy of the permanent magnet synchronous generator (PMSG) system, especially utilized in variable speed applications, in order to stabilize the output voltage on the dc link over a wide speed range.


Different ac/dc power converter topologies are comparatively studied, each with an accordingly designed PMSG, so as to investigate the influence of the armature winding inductance as well as the relationship between the PMSG and power converter topologies.


Pulse width modulation (PWM) rectifier is preferable for the said application due to its good performance and controllability. Moreover, by employing the PWM rectifier, relatively large inductance of the PMSG is considered for both short-circuit current reduction and field regulation.


Field-regulating control is realized with a space vector PWM (SVPWM) rectifier, which can weaken the PMSG magnetic field during high-speed operation, while even properly enhance the field at low speed, ensuring a small change of the PMSG output voltage and a stable dc voltage.



This work was supported by the Natural Science Foundation of China (51377140, 51077116) and the National Basic Research Program of China (2013CB035604, 2011CB707204).


Shen, J. and Miao, D.-M. (2015), "Machine design and control strategy for wide-speed-range PMSG systems", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 34 No. 1, pp. 92-109.



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