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Energies 2018, 11(8), 2049; https://doi.org/10.3390/en11082049

Improvement of the Response Speed for Switched Reluctance Generation System Based on Modified PT Control

1
Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China
2
Department of Electrical engineering & Electronic, University of Liverpool, Liverpool L69 3BX, UK
*
Author to whom correspondence should be addressed.
Received: 1 July 2018 / Revised: 19 July 2018 / Accepted: 19 July 2018 / Published: 7 August 2018
(This article belongs to the Special Issue Control and Nonlinear Dynamics on Energy Conversion Systems)
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Abstract

The Switched Reluctance Generator (SRG) is suitable for wind power generation due to its good reliability and robustness. However, The SRG system adopting the conventional control algorithm with Pulse Width Modulation (PWM) method has a drawback, low response speed. The pulse train (PT) control has been widely used in dc/dc power converters operating in the discontinuous conduction mode due to its advantages of simple implementation and fast response. In this paper, for the first time, the PT control method is modified and adopted for controlling the output voltage of SRG system in order to achieve fast response. The capacitor current on the output side is sampled and combined with the output voltage to select the pulse trains and the low frequency oscillation cased by PT can be suppressed by tuning the feedback coefficient of the capacitor current. Also, good performance can be guaranteed with a wide range of voltage regulations, fast response, and no overshoot. The experimental platform of an 8/6 SRG system is built, and the experimental results show that the PT control can be used for SRG system with good practicability. View Full-Text
Keywords: switched reluctance generator; capacitance current pulse train control; voltage ripple; capacitance current; feedback coefficient switched reluctance generator; capacitance current pulse train control; voltage ripple; capacitance current; feedback coefficient
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zan, X.; Cui, M.; Yu, D.; Xu, R.; Ni, K. Improvement of the Response Speed for Switched Reluctance Generation System Based on Modified PT Control. Energies 2018, 11, 2049.

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