US 12,597,801 B2 · Fast automatic transfer switching circuit and control method thereof

Abstract

According to an aspect of the present disclosure, there is provided a switching circuit including a main power supply circuit connected between power sources and a load, wherein the power sources include a first power source and a second power source, and the main power supply circuit includes a transfer switch connected between the power sources and the load and configured to switch between the first power source and the second power source; and a power electronic switch for turning on or off the main power supply circuit, wherein the power electronic switch is connected between the transfer switch and the load.

Claims13

Dependent claims

A switching circuit comprising:

a main power supply circuit connected between power sources and a load, wherein the power sources comprise a first power source and a second power source, and the main power supply circuit comprises:
a transfer switch connected between the power sources and the load and configured to switch between the first power source and the second power source;
and
a power electronic switch for turning on or off the main power supply circuit,
wherein the power electronic switch is connected between the transfer switch and the load;
and
an auxiliary power supply circuit connected in parallel with the main power supply circuit, wherein the auxiliary power supply circuit comprises:
a first switch connected to the first power source;
a second switch connected to the second power source;
and
a convert circuit connected between the first switch and the second switch with the load and configured to control an output to the load.

8 more elements

A control method of a switching circuit which is connected between a first power source and a second power source with a load and comprises a transfer switch and a power electronic switch, the transfer switch configured to switch between the first power source and the second power source, the method comprising:

turning off a first main power supply path by turning off the power electronic switch, wherein the first main power supply path is a path through which the first power source supplies power to the load via the transfer switch and the power electronic switch;
supplying power to the load when the power electronic switch is turned off by turning on a second auxiliary power supply path, wherein the second auxiliary power supply path is connected in parallel with the first main power supply path;
switching the first main power supply path to a second main power supply path by switching the transfer switch from the first power source to the second power source, wherein the second main power supply path is a path through which the second power source supplies power to the load via the transfer switch and the power electronic switch;
turning on the second main power supply path by turning on the power electronic switch to supply power to the load;
and
turning off the second auxiliary power supply path,
wherein the power electronic switch is connected between the transfer switch and the load.

4 more elements

turning off a first main power supply path by turning off the power electronic switch, wherein the first main power supply path is a path through which the first power source supplies power to the load via the transfer switch and the power electronic switch;
turning on a second auxiliary power supply path to supply power to the load, wherein the second auxiliary power supply path is connected in parallel with the first main power supply path, wherein the second auxiliary power supply path is a path through which the second power source supplies power to the load via a second switch and a convert circuit for controlling an output to the load, and wherein turning off and turning on the second auxiliary power supply path is controlled by at least one of the second switch or the convert circuit;
switching the first main power supply path to a second main power supply path by switching the transfer switch from the first power source to the second power source, wherein the second main power supply path is a path through which the second power source supplies power to the load via the transfer switch and the power electronic switch;
turning on the second main power supply path by turning on the power electronic switch to supply power to the load;
and
turning off the second auxiliary power supply path,
wherein the power electronic switch is connected between the transfer switch and the load.

4 more elements

Dependencies are inferred from the claim text.

Fast automatic transfer switching circuit and control method thereof

Life of this patent

Fast automatic transfer switching circuit and control method thereof

Life of this patent

Abstract

Claims13