Comparison between SiC- and Si-Based Inverters for Photovoltaic Power Generation Systems

• 作者: Akio Shimono Masashi Yasuda Mikio Murozono Taisuke Matsumoto Takeo Oku Yasuhiro Shirahata Yoshikazu Takeda Yuji Ando Yuya Ohishi
• 来源期刊: 电力能源(英文)
• 学科: 医学
• 关键词: Silicon CARBIDE Solar Cell INVERTER PHOTOVOLTAIC Device MAXIMUM Power Point Tracking LITHIUM-ION Battery
• 年，卷（期）: 2017,（1）
• 页码范围: 30-40
• 页数: 11页
• 分类号: R73

摘要

100-W class power storage systems were developed, which comprised spherical Si solar cells, a maximum power point tracking charge control-ler, a lithium-ion battery, and one of two different types of direct current (DC)-alter- nating current (AC) converters. One inverter used SiC met-al-oxide-semicon-ductor field-effect transistors (MOSFETs) as switching devices while the other used Si MOSFETs. In these 100-W class inverters, the ON resistance was considered to have little influence on the efficiency. Nevertheless, the SiC-based inverter exhibited an approximately 3% higher DC-AC conversion efficiency than the Si-based inverter. Power loss analysis indicated that the higher efficiency resulted predominantly from lower switching and reverse recovery losses in the SiC MOSFETs compared with in the Si MOSFETs.