A vector controlled single-phase voltage source inverter with enhanced dynamic response

Vector (dq) control is a powerful technique used in high dynamic performance inverters. The transformation of ac into dc quantities allows the controller to be designed as for dc-dc converters, with infinite gain at the steady-state operating point for zero steady-state error. It can be easily implemented for three-phase inverters but presents some challenges for single-phase ones. The orthogonal component (β) required for the stationary to rotating frame transformation does not exist and is usually created by phase shifting the real one (α) by ¼ of a line cycle, what deteriorates the dynamic response. Recently an approach where the orthogonal quantity is obtained by emulating a fictitious orthogonal circuit has been proposed. This paper shows that the results obtained with this new approach are better than with the ¼ line cycle delay and that the α and β components become identical to those of a three-phase inverter. Simulation and experimental results are presented.

Published in:
Proceedings of the 2010 IEEE International Symposium on Industrial Electronics, 2891 - 2896
Presented at:
ISIE 2010 : 2010 IEEE International Symposium on Industrial Electronics, Bari, Italy, 04 - 07 July, 2010

 Record created 2011-08-16, last modified 2018-09-13

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