Transfer switch device and method

Details Transfer switch device and method Transfer switch device and method

2008-04-01

2008-04-01

Sherry, Michael (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Load current control

Reexamination Certificate

active

07352082

ABSTRACT:
This disclosure is concerned with devices and methods for voltage source transfer switching that reduces or eliminates transformer saturation due to DC flux built up during a transfer event. First and second voltage sources (primary and alternate) are connectable to a load via corresponding switches. A transformer is connected downstream of the switches. A controller operates the switches according to various transfer methods wherein a switching time is determined to minimize downstream saturation current.

REFERENCES:
patent: 4256972 (1981-03-01), Wyatt et al.
patent: 5210685 (1993-05-01), Rosa et al.
patent: 5502340 (1996-03-01), Schuster et al.
patent: 5670833 (1997-09-01), Mengelt et al.
patent: 5784240 (1998-07-01), Przywozny et al.
patent: 5808378 (1998-09-01), O'Leary et al.
patent: 6969976 (2005-11-01), Broach et al.
patent: 2005/0184592 (2005-08-01), Marwali et al.
Mokhtari, H., et al.: “Performance evaluation of thyristor based static transfer switch”, IEEE Transactions on Power Delivery IEEE USA, vol. 15, No. 3, Jul. 2000, pp. 960-966.
PCT International Search Report for International Application No. PCT/US2005/004155 dated Jun. 17, 2005.
PCT Written Opinion of the International Searching Authority for International Application No. PCT/US2005/004155 dated Jun. 17, 2005.

Affiliated with

Also associated with

Rating

Transfer switch device and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transfer switch device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transfer switch device and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2792576