Power converter, diagnostic system of power converter, and power converter diagnostic method using current change
US10122296B2 · kind B2 · utility
1Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2015 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jun 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/327
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A diagnostic system for a power converter which includes a semiconductor device, and which performs a switching operation between conduction and interruption of the principal current flowing through a main circuit. The diagnostic system includes a current change amount calculation circuit for obtaining numeric data which reflects a current change amount of the principal current per unit time, a determination circuit for determining a state of the power converter by comparing the numeric data with a reference value, and an output circuit for outputting a determination result of the determination circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.