[Oral Presentation]A Novel APF-Type Active Damper for SAPF System with Phase Reshaping

A Novel APF-Type Active Damper for SAPF System with Phase Reshaping
ID:47 Submission ID:87 View Protection:ATTENDEE Updated Time:2023-11-20 13:45:36 Hits:171 Oral Presentation

Start Time:2023-12-10 09:45 (Asia/Shanghai)

Duration:15min

Session:[S8] AI-driven technology » [S8] AI-driven technology

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Abstract
In the normal process of operating, SAPF (shunt active power filter) injects the compensation current into grid to improve the power quality, which may induce the harmonic instability in the whole system. It has been revealed that the instability is induced by the resonance characteristics of grid impedance and loads, which is dominated by the phase characteristics. However, traditional active damper stabilizes the system by increasing the real component of the load’s admittance, which is inefficient when the resonance is severe. Therefore, this paper proposes a novel APF-type active damper to stabilize the system by phase reshaping. The proposed active damper is designed to operate as an APF, which detects the harmonic current as the current reference. And the compensation ratio determines the effect of phase reshaping. Additionally, a PI controller is incorporated to dynamically modify the compensation ratio, which manages to effectively stabilize the system. Compared with traditional active dampers, the APF-type active damper presents an alternative approach of system stabilization with less power loss.  Simulations are conducted to verify the correctness of the analysis and effectiveness of the proposed APF-type active damper.
Keywords
active damper, harmonic stability, SAPF system, phase reshaping
Speaker
Zhilong Zhang
Graduate student Xi'an Jiaotong University

Submission Author
Zhilong Zhang Xi'an Jiaotong University
Hao Yi Xi'an Jiaotong University
Shuaibin Shi New Smart City High Quality Power Supply Joint Laboratory of China Southern Power Grid Company Limited(Shenzhen Power Supply Co.,Ltd), Shenzhen 518020, China
Qing Wang New Smart City High Quality Power Supply Joint Laboratory of China Southern Power Grid Company Limited(Shenzhen Power Supply Co.,Ltd), Shenzhen 518020, China
Xin Jiang Xi'an Jiaotong University
Deshuo Yu Xi'an Jiaotong University
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