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Article
Model Predictive Control of Bidirectional AC-DC Converter for Energy Storage System
Journal of Electrical Engineering & Technology (2015)
Abstract

Energy storage system has been widely applied in power distribution sectors as well as in renewable energy sources to ensure uninterruptible power supply. This paper presents a model predictive algorithm to control a bidirectional AC-DC converter, which is used in an energy storage system for power transferring between the three-phase AC voltage supply and energy storage devices. This model predictive control (MPC) algorithm utilizes the discrete behavior of the converter and predicts the future variables of the system by defining cost functions for all possible switching states. Subsequently, the switching state that corresponds to the minimum cost function is selected for the next sampling period for firing the switches of the AC-DC converter. The proposed model predictive control scheme of the AC-DC converter allows bidirectional power flow with instantaneous mode change capability and fast dynamic response. The performance of the MPC controlled bidirectional AC-DC converter is simulated with MATLAB/Simulink (R) and further verified with 3.0kW experimental prototypes. Both the simulation and experimental results show that, the AC-DC converter is operated with unity power factor, acceptable THD (3.3% during rectifier mode and 3.5% during inverter mode) level of AC current and very low DC voltage ripple. Moreover, an efficiency comparison is performed between the proposed MPC and conventional VOC-based PWM controller of the bidirectional AC-DC converter which ensures the effectiveness of MPC controller. Link to Full-Text Articles : http://www.dbpia.co.kr/Journal/ArticleDetail/3552551

Keywords
  • model predictive control (mpc),
  • bidirectional ac-dc converter,
  • unity power factor,
  • reactive power,
  • energy storage system,
  • direct power-control,
  • connected dc/ac converters,
  • direct torque control,
  • induction-motor,
  • rectifiers,
  • inverter,
  • quality
Publication Date
January, 2015
Publisher Statement
Az1ot Times Cited:0 Cited References Count:28
Citation Information
"Model Predictive Control of Bidirectional AC-DC Converter for Energy Storage System" Journal of Electrical Engineering & Technology Vol. 10 Iss. 1 (2015)
Available at: http://works.bepress.com/facultyofengineering_universityofmalaya/128/