Asymmetrical bridge inverter circuit for driving a switched reluctance motor
US5771166A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1997 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Jan 27, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/092
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter circuit for a switched reluctance motor (SRM) includes a lower switching transistor connected to a corresponding lower negative pole of a filter condenser and switched in accordance with a control signal outputted from a control circuit, an upper switching transistor connected to a corresponding upper positive pole of the filter condenser and switched in accordance with a switching operation of the lower switching transistor, resistances for dividing the voltage of a DC link when the lower switching transistor is turned on, a condenser for controlling a gate voltage of the upper switching transistor in accordance with the voltage divided by the resistances, and a coil for operating a motor in accordance with a switching operation of the upper and lower switching transistors. The circuit operates in accordance with a switching operation of the lower switching transistor by replacing with a simplified passive component a voltage isolating device and a gate driver of a conventional circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.