Power conversion device and method for diagnosing abnormality in voltage sensor characteristics
US10014776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2017 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Mar 3, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion device provided with a DC power source, a voltage boost converter, an inverter, a primary smoothing capacitor, a secondary smoothing capacitor, an intermediate capacitor provided in the voltage boost converter and three voltage sensors which measure the voltages of the capacitors, further including an abnormality diagnosis controller which makes a diagnosis of the presence/absence of an abnormality in the detection characteristics of the voltage sensors, on the basis of the state of transition of the detection results of the voltage sensors which are monitored during a discharge operation by the respective capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.