Method for controlling modulation wave and three-phase three-wire three-level circuit
US9859816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2016 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Sep 29, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling modulation wave and a three-phase three-wire three-level circuit are provided. The method for controlling modulation wave is applied in the three-phase three-wire three-level circuit. Three bridge arms of the three-phase three-wire three-level circuit correspond to three modulation waves. The three-phase three-wire three-level circuit is controlled by comparing said three modulation waves and a carrier wave. The method for controlling modulation wave includes: obtaining a primary modulation wave from said modulation waves based on currents corresponding to each phase of the three-phase three-wire three-level circuit; and adding a shifting quantity to said three modulation waves such that the primary modulation wave is shifted to a peak value, a valley value, or a middle value between the peak value and the valley value of the carrier wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.