Regulator system for a switching mode inverter generator
US4868728A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1987 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Dec 4, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A regulator system for a switching mode inverter generator feeding an inductively coupled load and seeing the load as a series resonant circuit having a resonant frequency which varies with its magnetic state comprises two switches which connect the load to the output of the inverter. Each switch comprises a switching element and switching terminals. A diode shunts the switching terminals of each switching element of each switch. A control loop slaves the output frequency of the inverter to the resonant frequency of the load. A second control loop is responsive to the inverter power output or the inverter supply voltage. The system is suitable for inductive heating furnaces as used in industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.