1. Filter-based perturbation control of low-frequency oscillation in voltage-mode H-bridge DC-AC inverter.
- Author
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Lu, Weiguo, Zhao, Naikuan, Wu, Junke, El Aroudi, Abdelali, and Zhou, Luowei
- Subjects
FREQUENCIES of oscillating systems ,FREQUENCY response ,FREQUENCY stability ,ELECTRIC potential ,VOLTAGE regulators ,PERTURBATION theory - Abstract
This paper presents a new additional perturbation control method for suppressing low-frequency oscillation in voltage-mode H-bridge DC-AC inverter. The stability boundary of the H-bridge inverter is investigated from its small-signal averaged model. High input voltage and light load would cause low-frequency oscillation in this system. To this end, a filter-based perturbation control (FBPC) is proposed for eliminating this oscillation, by using an analog filter to extract the unexpected signal and applying it to the control loop. Theoretical results show a larger stability range of the controlled system with the proposed FBPC. The simulation and experiment results show that the proposed controller can control the low-frequency oscillation in H-bridge DC-AC inverter well. Copyright © 2014 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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