Scalable high frequency converters for motor drives based on switching cells

Inhalt:
In order to meet the requirements of future electric drive systems a combination of new converter topologies and advanced semiconductors is necessary. Low voltage unipolar devices below 600V (Si-MOSFET and GaN-HEMT) feature extremely low switching and low conduction losses, enabling the realization of ultra low loss converters. Cooling equipment and passive filters will be reduced drastically, reducing the weight. Owing to these game changing facts, the priority of low stray inductance and low EMI will increase extremely, while cooling requirements may be relaxed for future converter designs. According to these trends a half bridge design with focus on low stray inductance, fast gate drive and good scalability - realized on multilayer boards - is presented.