Development of higher-efficiency, more compact motor drive systems is a key priority for manufacturers of EVs and HEVs as well as the rail industry. Among other sectors of the economy, where companies have started using SiC power semiconductors in order to boost the efficiency and shrink the size of the inverters. Expected advantages of SiC power semiconductors include smaller passive components thanks to higher switching frequencies and lower-loss performance thanks to low on-resistance values. Accurate power measurement is a critical precondition for evaluating motor drive systems, but power measurement of SiC inverters require high-precision measurement across a broader band of frequencies than in the past. This presentation introduces a range of topics including expertise related to power, efficiency and loss measurement of SiC inverters and motor drive systems along with actual measurement results.
Shozo Yodaon, HIOKI EUROPE GmbH on behalf of Batenburg Mechatronica BV