Patent · US Active

Static transfer switch with resonant turn-off

US10734834B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Zhiguo Pan · Cary, US
Adil Oudrhiri · Richmond, US
Zichi Zhang · Västerås, SE
Yu Du · 红钢城街道, CN

Key dates

Filing date	Jun 4, 2018
Grant date	Aug 4, 2020
Priority date	—
Expiry date	Nov 10, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B70/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A resonant turn-off circuit is provided to disconnect an inadequate power source and transfer a load to an alternate power source. In the circuit, a main switch is turned off before the AC cycle of the power source crosses zero. As a result, the main switch may be turned off quickly to transfer electric power supplied to a load to a second power source. The circuit may include resonant switches, a capacitor, a pre-charging power supply and an inductor. When it is desired to turn off the main switch, a resonant switch is turned off to cause a voltage reversal across the switch.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.