Common-mode voltage injection control method and apparatus for inverter
US12224682B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2023 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Sep 9, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2300/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A common-mode voltage injection control method and apparatus for an inverter. For the method and apparatus, a common-mode voltage for a DPWM mode is calculated based on three-phase port voltages and an output power command; a common-mode voltage for an MPC modulation mode is calculated based on the direct current bus voltage, the three-phase port voltages, and the output power command; a modulation proportion is determined based on a maximum phase voltage peak value of the three-phase port voltages, the direct current bus voltage, and a power factor of the output power command; and a common-mode injection voltage is generated based on the common-mode voltage for the DPWM mode, the modulation proportion, and the common-mode voltage for the MPC modulation mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.