Multiple-frequency inversion method and control apparatus for internal combustion engine driven generator
US8712666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2012 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Mar 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53878
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multiple-frequency inversion method and a control apparatus for an internal combustion engine driven generator includes an inverter unit that employs a multiple-frequency inversion technology, controlling the inverter unit through a low switching frequency f to obtain a 2f modulated frequency, thus resolving the problem that a low frequency switching component generates a high frequency modulated waveform. Four switching devices in the inverter unit have the same working frequency, alleviating the controller load. In addition, a high modulated frequency reduces the device parameters of the filter unit, resulting in a smaller-sized and lighter apparatus, thus giving the generator portability. Reduction of the device parameters of the filter unit means reduction of the output internal resistance of the generator, therefore increasing the non-linear load capability of the generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.