Research on the Modulation and Control Strategy for a Novel Single-Phase Current Source Inverter

Yi Zhang (), Tao Yang and Yiru Miao
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Yi Zhang: School of Vehicle Engineering, Chongqing University of Technology, Chongqing 400054, China
Tao Yang: School of Rail Transit and Aviation Service, Chongqing Industry Polytechnic College, Chongqing 401120, China
Yiru Miao: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China

Energies, 2023, vol. 16, issue 18, 1-14

Abstract: Compared to the voltage source inverter, the current source inverter (CSI) can boost voltage and improve filtering performance. However, the DC side of CSI is not a real current source, and the DC input current comprises a DC power supply and an inductor. In the switching process, the DC-link inductor is charged or discharged and is in an uncontrollable state. This paper proposes a novel CSI topology containing five switching tubes and a modulation strategy based on the hysteresis control strategy of the DC-link current. Due to the conduction and switching loss being positive to the DC-link current, the calculation method for the least reference value of the DC-link current is derived to meet power requirements. By constructing a virtual axis, we then present the control strategy of the output voltage in a two-phase rotating reference frame. Finally, we carry out the simulation and experiment are to validate the proposed topology, modulation, and control strategy.

Keywords: current source inverter; DC-link current; modulation; control strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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