Evaluation of the Efficiency of Inverters That Use SiC Power Devices in Electrical Railways
Inverters used in applications such as railways and other transportation convert high-voltage power, and it’s necessary to measure high voltages to measure the efficiency of those devices. Silicon carbide (SiC) is attracting attention as a next-generation material that could take the place of conventional silicon (Si). The use of SiC power devices in inverters makes it possible to balance high-speed switching control with high-efficiency power conversion. Developers and manufacturers need to be able to measure efficiency accurately on the order of 0.1% to verify the effects of efficiency improvements in such inverters. So, the ability to measure the high-frequency components of the output power is essential.
The VT1005 can be used with a power analyzer PW8001 to measure the efficiency of inverters that use SiC power devices.
The VT1005 allows power analyzers to measure voltages of up to 5000 V.
- 5000 V rms (±7100 Vpeak) No measurement category
- 2000 V rms CAT II
- 1500 V rms CAT III
Measurement of High-Frequency Components
The VT1005’s measurement band is DC to 4 MHz, allowing it to measure voltage from DC to high frequencies.In addition, the excellent flatness of the amplitude and phase characteristics in the measurement band enables highly accurate power measurement.