Inverter control device
US11437930B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2018 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Oct 8, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
It provides an inverter main circuit converting a DC-voltage into three-phase AC-voltages, a DC-current detection unit detecting the DC-current value of a DC-current flowing in the main circuit, and an inverter control unit generating a drive signal for controlling operation of the main circuit using a voltage command value corresponding to each phase of the three-phase AC-voltages and a triangular-wave carrier. Using a time period during which the triangular-wave carrier monotonically increases or decreases as a unit period, the control unit provides control to alternately use, as the DC-current value for use in computation of the voltage command value, the DC-current value detected in the unit period in which the triangular-wave carrier monotonically increases and the DC-current value detected in the unit period in which the triangular-wave carrier monotonically decreases, for every voltage command value control period set to three times or more and an integer multiple of the unit period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.