Inverter apparatus provided with electric discharge control circuit of dc smoothing capacitor and method of controlling the same
US5465202A · kind A · utility
24Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Mar 3, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/047
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a variable frequency power source unit, a series circuit of a contactless semiconductor switching element and a resistor is provided in parallel to a d.c. smoothing capacitor, and a control circuit is provided for receiving a signal for turning on the switching element selectively at any time after the power source is interrupted, thereby discharging the electric charge on the d.c. smoothing capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.