In the current power system, the conversion between dc and ac is widely existing and the dc-side harmonic problem is prominent. To suppress the second-harmonic current at the dc side of a single-stage single-phase inverter, a dc hybrid active power filter (DC-HAPF) structure is presented, which composes of a bidirectional dc-dc circuit-based active power filter (APF) and a CL passive filter. In this article, the CL passive filter is used to mitigate the high-frequency harmonics and the APF is applied to compensate the low-frequency harmonic current. Meanwhile, the influence of the filter parameters on the harmonic suppression is analyzed based on the average switching model. In addition, for the control of the DC-HAPF, a nonlinear unified controller via feedback linearization is proposed, where the voltage and current dual-loop control is converted to a single-loop control of energy. By analyzing the control system stability and DC-HAPF's performance, appropriate control parameters are selected. To verify the feasibility of the proposed topology and control strategy, a 500-W single-stage single-phase inverter with the DC-HAPF is built and a good performance of the dc-side harmonic suppression has been achieved.
A DC Hybrid Active Power Filter and Its Nonlinear Unified Controller Using Feedback Linearization
2021-07-01
Li , G , Luo , A , He , Z , Ma , F J , Chen , Y , Wu , W , Zhu , Z & Guerrero , J M 2021 , ' A DC Hybrid Active Power Filter and Its Nonlinear Unified Controller Using Feedback Linearization ' , IEEE Transactions on Industrial Electronics , vol. 68 , no. 7 , 9102437 , pp. 5788-5798 . https://doi.org/10.1109/TIE.2020.2996147
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC: | 629 |
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