集成起動發電機用（ISG）逆變器是ISG 混合動力汽車的重要組成部分，要求其體積小、重量輕、高效率和高可靠性。本文針對ISG 逆變器的特殊要求，從元器件選擇和主電路結構設計著手，提出了MOSFETs 并聯的方案，以減小電路在功率器件上的損耗，提高逆變器效率，得到了結構緊湊、效率較高的ISG 逆變器。搭建完成實驗平臺，對ISG逆變器進行了實驗研究。實驗結果表明，本ISG 逆變器可長期可靠穩定運行，達到了預期技術指標，證實了設計方案的可行性和有效性。

Abstract：Integrated starter-generator (ISG) inverter is an important component of ISG HEV，It’s requied small size, light weight, high efficiency and high reliability.According to ISG inverter special requests , this paper proposed a solution that use MOSFETs in parallel and an unique structure of main circuit to get a ISG inverter with higher efficiency and a conpact volume.Then an experimental platform was builded on whitch the ISG inverter were studied. The experimental results shown that the ISG inverter can be long-term reliable and stable , operation achieved the expected technical indicators. Feasibility of the design was confirmed.
關鍵詞：ISG ；逆變器；42V 系統
Keywords: ISG , Inverter ,42V power net of automobiles