Pulse width modulated inverter
US4244015A · kind A · utility
22Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 24, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | May 24, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/4807
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus for chopping DC power at a high frequency, for example 20 kHz, such high frequency being pulse-width modulated by a lower power frequency source at the desired power frequency. The pulse width modulation is servo controlled through current and voltage feedback to cause the current delivered to a load impedance to be in phase with a reference to power frequency oscillator and to control the output frequency voltage amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.