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| Control Strategy of PV Quasi-Z-Source T-Type Three-Level Inverter Based on Port Controlled Hamiltonian with Dissipation Model |
| Cheng Qiming1, Li Tao1, Cheng Yinman2, Chen Lu1, Sun Weisha1 |
1. College of Automation Engineering Shanghai University of Electric Power Shanghai 200090 China;
2. College of Electronics and Information Engineering Tongji University Shanghai 201804 China |
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Abstract The passivity-based control strategy based on the port controlled Hamiltonian with dissipation (PCHD) model does not need to linearize the controlled objects. It discusses the stability of the controlled objects from energy and injection damping, which simplifies the structure of the control system. Firstly, the mathematical model of the quasi-Z-source T-type three-level inverter is derived by using the state-space method. Secondly, the energy function and injection damping are selected through the control law of PCHD model, and the control system is designed. Meanwhile, this control strategy not only makes the system have excellent dynamic and static characteristics, but also has low harmonic output current and high economy. Finally, simulation and experiments verify the correctness and effectiveness of the passive control strategy based on PCHD model.
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Received: 09 April 2018
Published: 05 May 2019
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2019, Vol. 34 
