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- 저자 : Jianhang Lu (검색결과 2 건)
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Parameter design of active damping‑based shunt hybrid active power filters
Jianhang Lu,Miao Zhang,Junming Wen,Dali Zheng,Shaoli Deng,Xiang Shi,Ling Yang 전력전자학회 2023 JOURNAL OF POWER ELECTRONICS Vol.23 No.5
This paper presents the parameter design of a new topology of hybrid active power filter (HAPF), which makes the system capacity smaller. Based on the main topological circuit, the passive LC single-tuned circuit shunted into the HAPF effectively reduces the capacity of the system. By introducing the grid voltage feedforward method, the DC-side voltage control becomes relatively stable, and the fundamental reactive current flowing through the converter is effectively reduced. Meanwhile, to suppress the resonance of the HAPF, the state variable feedback method is adopted. According to theoretical analysis, a simulation model of the system is built in the MATLAB environment. Then a low-voltage experimental HAPF platform is built to validate the result of the simulations.
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A Novel Control Strategy for Improving the Performance of Hybrid Active Power Filters
Wen Junming,Zhang Miao,Lu Jianhang,Guan YiChuan,Wu Shiyu,Feng Chunshou 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.6
Hybrid active power filters (HAPF) are effective harmonic compensation devices. However, the inductor voltage is too low, so the DC-bus voltage can not get enough power flow. Thus, the compensation performance and stability of HAPF can be reduced. Theoretically, increasing the inductor voltage can improve the DC side control performance. Therefore, the relevant mathematical model is established, and systematic analysis is carried out. To improve the performance of HAPF, a new double closed-loop control strategy is proposed. To sum up, the main variable of the outer loop control is the inductor voltage. The current flow direction can be changed by changing the value of the inductance voltage to improve the inductance voltage and realize the stability of the DC-side voltage. Secondly, from the transfer function and the Bode Plots, the introduction of the inverter output current inner loop results in significant resonant spike suppression of the system. Compared with the self-excitation control method with voltage feedforward, this new control method is easy to implement and very effective in DC-bus control. Simulation and experimental results show that the compensation effect of HAPF is improved, the DC-side voltage is stable, and the system can operate safely and reliably.
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