Sine-wave static converter
US4244016A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1978 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Nov 20, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53871
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The method and apparatus of converting a sine-wave signal of one frequency to a sine-wave signal of a different frequency comprises a four port pass means that is controlled by at least two control signals. An error signal is generated by the difference between the rectified output signal and a locally generated reference signal. The error signal is compared to a high frequency sawtooth signal to provide a pulse width signal which generates a two state output signal. The first state is when the amplitude of the sawtooth signal is less than the error signal and the second state is when the amplitude of the sawtooth signal is greater than the amplitude of the error signal. The two state pulse width modulated signal is combined with the output from a polarity control means for obtaining the control signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.