Reactive power minimization of dual active bridge DC/DC converter with triple phase shift control using neural network.

Harrye, Yasen A.; Ahmed, Khaled H.; Aboushady, Ahmed A.

Abstract

Reactive power flow increases dual active bridge (DAB) converter RMS current leading to an increase in conduction losses especially in high power applications. This paper proposes a new optimized triple phase shift (TPS) switching algorithm that minimizes the total reactive power of the converter. The algorithm iteratively searches for TPS control variables that satisfy the desired active power flow while selecting the operating mode with minimum reactive power consumption. This is valid for the whole range of converter operation. The iterative algorithm is run offline for the entire active power range (-1pu to 1pu) and the resulting data is used to train an open loop artificial neural network controller to reduce computational time and memory allocation necessary to store the data generated. To validate the accuracy of the proposed controller, a 500-MW 300kV/100kV DAB model is simulated in Matlab/Simulink, as a potential application for DAB in DC grids.

Citation

HARRYE, Y.A., AHMED, K.H. and ABOUSHADY, A.A. 2014. Reactive power minimization of dual active bridge DC/DC converter with triple phase shift control using neural network. In Proceedings of the 3rd International conference on renewable energy research and applications (ICRERA 2014), 19-22 October 2014, Milwakuee, USA. Piscataway: IEEE [online], pages 566-571. Available from: https://doi.org/10.1109/ICRERA.2014.7016448

• Conference Name: 3rd International conference on renewable energy research and applications 2014 (ICRERA 2014)
• Conference Location: Milwaukee, WI
• Start Date: Oct 19, 2014
• End Date: Oct 22, 2014
• Acceptance Date: Jul 31, 2014
• Online Publication Date: Oct 22, 2014
• Publication Date: Jan 22, 2015
• Deposit Date: Jul 19, 2016
• Publicly Available Date: Jul 19, 2016
• Publisher: IEEE Institute of Electrical and Electronics Engineers
• Pages: 566-571
• DOI: https://doi.org/10.1109/ICRERA.2014.7016448
• Keywords: DCDC converter; Dual active bridge (DAB) converter; Neural network (NN) controller; Reactive power; Triple phase shift (TPS)
• Public URL: http://hdl.handle.net/10059/1540