Fast selective harmonic mitigation in multifunctional inverters using internal model controllers and synchronous reference frames

Campos-Gaona, David and Peña Alzola, Rafael and Monroy-Morales, Jose Luis and Ordonez, Martin and Anaya-Lara, Olimpo and Leithead, William E. (2017) Fast selective harmonic mitigation in multifunctional inverters using internal model controllers and synchronous reference frames. IEEE Transactions on Industrial Electronics, 64 (8). pp. 6338-6349. ISSN 0278-0046

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    Abstract

    This paper presents a fast selective harmonic current mitigation strategy for inverters with active power filter capabilities based in synchronous reference frames and twodegrees-of-freedom internal model controllers. The advantage of this control strategy over the conventional PI solution is a significant increase in the speed of harmonic detection and mitigation. Furthermore, this control strategy reduces the computational burden when applied in a digital controller. These characteristics make this strategy desirable for applications where fast/harmonic detection and mitigation are needed. Mathematical analysis and simulations are presented to corroborate the performance of the proposed controller strategy. Finally, the results of this proposal are verified in a 1kW 3-phase multifunctional inverter with harmonic compensation capabilities up to the 17th harmonic.