Conference paper
High Efficiency High Step-up Isolated DC-DC Converter for Photovoltaic Applications
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2019 |
| Pages: | 1273-80 |
| Proceedings: | 2019 IEEE Applied Power Electronics Conference and Exposition |
| ISBN: | 1538683296 , 153868330X , 153868330x , 1538683318 , 9781538683293 , 9781538683309 and 9781538683316 |
| ISSN: | 10482334 and 24706647 |
| Types: | Conference paper |
| DOI: | 10.1109/APEC.2019.8721916 |
| ORCIDs: | Wang, Chang , Li, Mingxiao and Ouyang, Ziwei |
Active clamp flyback High step-up dc-dc converter Inputparallel-output-series Photovoltaic SDG 7 - Affordable and Clean Energy ZVC/ZCS current-fed push-pull
ACF converter Clamps DC transformer DC-DC power convertors IPOS structure Inductance Magnetic resonance PV application Switches Topology Windings ZCS current-fed push-pull converter ZVS current-fed push-pull converter Zero voltage switching active clamp flyback active clamp flyback converter clamps efficiency 95.1 percent high efficiency high step-up isolated DC-DC converter input-parallel connection input-parallel-output-series input-parallel-output-series structure photovoltaic photovoltaic application photovoltaic power systems power 400 W switching convertors transformers voltage 24.0 V to 32.0 V voltage 400.0 V zero current switching zero voltage switching zero-current-switching current-fed push-pull converter zero-voltage-switching current-fed push-pull converter
