Abstract
A high efficiency and high step-up isolated DC-DC converter with a new topology configuration for photovoltaic (PV) application is proposed in this paper. This converter consists of a Zero-Voltage-Switching (ZVS) and Zero-Current-Switching (ZCS) current-fed push-pull converter as a DC transformer dealing with most of power and an active clamp flyback (ACF) converter as a regulator with considerable high efficiency within a large conversion range. The two converters are constructed with the input-parallel-output-series (IPOS) structure. The inputparallel connection is able to share the large input current as well as reduce the current ripple, while the output-series connection is used to increase the output voltage gain. A 400 V / 400 W experimental prototype with an input voltage range of 24 V - 32 V is built. The maximum efficiency reaches at 95.1%. The experimental result validates the correctness of the analysis and proves the feasibility of the proposed topology for the photovoltaic applications.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 34th annual IEEE Applied Power Electronics Conference and Exposition |
| Publisher | IEEE |
| Publication date | 2019 |
| Pages | 1273-80 |
| ISBN (Print) | 9781538683293 |
| DOIs | |
| Publication status | Published - 2019 |
| Event | 2019 IEEE Applied Power Electronics Conference and Exposition - Anaheim convention center, Anaheim, United States Duration: 17 Mar 2019 → 21 Mar 2019 https://ieeexplore.ieee.org/xpl/conhome/8716496/proceeding |
Conference
| Conference | 2019 IEEE Applied Power Electronics Conference and Exposition |
|---|---|
| Location | Anaheim convention center |
| Country/Territory | United States |
| City | Anaheim |
| Period | 17/03/2019 → 21/03/2019 |
| Internet address |
Keywords
- High step-up dc-dc converter
- Photovoltaic
- ZVC/ZCS current-fed push-pull
- Active clamp flyback
- Inputparallel-output-series
