New three-port DC-AC inverter outputting a single-phase and a set of three-phase AC voltages |
| |
Authors: | Hurng-Liahng Jou Jinn-Chang Wu Kuen-Der Wu Hong-Ren Shen |
| |
Affiliation: | 1. Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan, R.O.C.;2. Department of Microelectronics Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan, R.O.C. |
| |
Abstract: | A conventional DC-AC inverter can only output either a single-phase AC voltage or a set of three-phase AC voltages. A new three-port DC-AC inverter which can simultaneously output a single-phase AC voltage and a set of three-phase AC voltages is proposed in this paper. This three-port DC-AC inverter is based on the three-port T-type multi-level power converter which is composed of three T-type power electronic legs, a decoupling transformer set, a filter inductor set, a single-phase filter capacitor, and a three-phase filter capacitor set. The DC port of the proposed power converter is connected to a DC power source to act as the input port, and the single-phase AC port and the three-phase AC port serve as two output ports to supply power to the single-phase load and the three-phase load, respectively. The zero-sequence transformer is used to decouple the single-phase and three-phase AC components, which are generated by the three T-type power electronic legs. The operation principle of this three-port DC-AC inverter is analyzed, and a hardware prototype is established to verify the performance of the proposed three-port DC-AC inverter. The experimental results are as expected. |
| |
Keywords: | Dc-ac inverter three-port t-type multi-level power power electronic leg zero-sequence transformer |
|
|