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Simulation Research on Control System of Main Converter Unit
Li Xingyu,Zheng Zhongxiang,Wu Dali 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
The main converter unit needs to provide high-quality AC and DC power for the ship AC/DC hybrid power system. The reliability of its control system is very important. In order to study and optimize the control system of the converter unit, it is very meaningful to model and simulate it. The working characteristics and operation requirements of the converter unit in the ship hybrid power system are introduced. According to the control system structure, the corresponding simulation model is built. The simulation results meet the unit operation requirements and provide technical support for optimizing the converter unit control system.
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.