Parallel control method and system for single-phase inverters and inverter
US11101741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2021 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Jan 25, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A parallel control method and a parallel control system for single-phase inverters and an inverter. Acquiring an output voltage and an output current of each of the single-phase inverters; transforming a voltage and a current in static abc coordinates into dq coordinates by reconstruction and coordinate transformation so as to realize decoupling of the voltage and the current; transforming an output voltage command value of a current loop in dq coordinates into abc coordinates by coordinate transformation; and modulating and generating modulation waves according to an output voltage command value in abc coordinates to control a switching of a power device. In the present application, a plurality of single-phase inverters are controlled to be connected in parallel and are simultaneously started to work, after one of the single-phase inverters is faulted, any other single-phase inverter automatically bears the load of the faulted single-phase inverter, so that a problem of restarting delay of a mutual backup module is solved, a real uninterrupted power supply of the power supply is realized, high reliability is achieved, and influences to vehicle driving are avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.