Capacitor equipment
US4162442A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1978 |
| Grant date | Jul 24, 1979 |
| Priority date | — |
| Expiry date | Feb 28, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A capacitor bank for power factor correction and/or voltage control is connectible to an AC network through a bidirectional static switch. Voltage sensing and comparing means effect connection of the capacitor bank to the network at the moment when the instantaneous values of the mains and capacitor voltages coincide. During a predetermined time interval after disconnection of the capacitor bank from the network, the switch is periodically made conducting for keeping the capacitor charged with a voltage of constant polarity. After the end of this time interval, the switch is made non-conducting, whereby the capacitor is allowed to discharge through the discharge resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.