DUAL INPUT POWER SUPPLY SYSTEM AND METHOD

摘要

A dual input power supply system/method providing uninterruptable power to a protected load device (PLD) is disclosed. The system includes hybrid switch devices (HSD) comprising semiconductor and relay/contactors that minimize the OPERATE/RELEASE times associated with switchover from a primary power source (PPS) to a secondary power source (SPS). An operate/release controller (ORC) monitors the condition of power provided by the PPS and SPS and determines the optimal transfer time to activate the HSD and switch between the PPS and SPS based on the PLD configuration. Use of the HSD in conjunction with the ORC permits a wide variety of series permutated AC/DC primary (PPS) and secondary (SPS) power sources, EMI snubbers (EMS), bridge rectifier diodes (BRD), AC-DC converters (ADC), and DC-DC converters (DDC) to service the PLD, while simultaneously reducing storage capacitors normally required to cover the OPERATE/RELEASE times associated with traditional PPS/SPS switchover/failover delays.

主权项

1. A dual input power supply system comprising:
(a) primary power source (PPS); (b) primary bridge rectifier diode (PBR); (c) primary hybrid switch device (PHS); (d) secondary power source (SPS); (e) secondary bridge rectifier diode (SBR); (f) secondary hybrid switch device (SHS); (g) electromagnetic interference (EMI) snubber (EMS); (h) AC-DC converter (ADC); (i) DC-DC converter (DDC); and (j) operate/release controller (ORC); wherein: said PBR comprises a dual input port and a dual output port; said SBR comprises a dual input port and a dual output port; said PHS comprises a dual input port, a dual output port, and a control port; said SHS comprises a dual input port, a dual output port, and a control port; said EMS comprises a dual input port and a dual output port; said ADC comprises a dual input port and a dual output port; said DDC comprises a dual input port and a dual output port; said PPS is electrically coupled to said PBR dual input port; said PBR output port is electrically coupled to said PHS dual input port; said SPS is electrically coupled to said SBR dual input port; said SBR output port is electrically coupled to said SHS dual input port; said EMS dual input port is electrically coupled to said PBR output port and said SBR output port; said EMS output port is electrically coupled to said ADC dual input port; said ADC output port is electrically coupled to said DDC dual input port; said DDC output port is configured to supply power to a protected load device (PLD); said PHS comprises a primary electromagnetic relay (PER) electrically connected in parallel with a primary semiconductor switch device (PSD) that are both electrically connected between one port connection of said PHS dual input port and one port connection of said PHS dual output port; said SHS comprises a secondary electromagnetic relay (SER) electrically connected in parallel with a secondary semiconductor switch device (SSD) that are both electrically connected between one port connection of said SHS dual input port and one port connection of said SHS dual output port; said PHS control port is electrically coupled to and controlled by said ORC; said SHS control port is electrically coupled to and controlled by said ORC; said ORC is configured to monitor a voltage provided by said PPS; said ORC is configured to control said PER to electrically disconnect said PBR from said EMS if said PPS monitored voltage is outside a predetermined range; said ORC is configured to control said PSD to electrically connect said PBR to said EMS during a RELEASE time associated with said PER disconnection; said ORC is configured to control said SER to electrically connect said SBR to said EMS when said PPS monitored voltage is outside said predetermined range; and said ORC is configured to control said SSD to electrically connect said SBR to said EMS before an ACTIVATE time associated with said SER connection.