초록 ▼

A system for controlling multiple energy storage devices in an uninterruptible power supply (UPS) system is provided. In one embodiment of the invention, the system generally includes a charger coupled to a direct current (DC) bus of the UPS system, and two or more energy storage circuits, each of w

A system for controlling multiple energy storage devices in an uninterruptible power supply (UPS) system is provided. In one embodiment of the invention, the system generally includes a charger coupled to a direct current (DC) bus of the UPS system, and two or more energy storage circuits, each of which includes a power regulator coupled to the charger and coupled to the DC bus, at least one energy storage device coupled to the power regulator, and a processor coupled to the power regulator for controlling the charge and discharge of the at least one energy storage device. In another embodiment of the invention, digital communication between two or more controllers is accomplished over the DC bus through use of the Control Area Network (CAN) protocol.

대표청구항 ▼

A system for controlling multiple energy storage devices in an uninterruptible power supply (UPS) system is provided. In one embodiment of the invention, the system generally includes a charger coupled to a direct current (DC) bus of the UPS system, and two or more energy storage circuits, each of w

A system for controlling multiple energy storage devices in an uninterruptible power supply (UPS) system is provided. In one embodiment of the invention, the system generally includes a charger coupled to a direct current (DC) bus of the UPS system, and two or more energy storage circuits, each of which includes a power regulator coupled to the charger and coupled to the DC bus, at least one energy storage device coupled to the power regulator, and a processor coupled to the power regulator for controlling the charge and discharge of the at least one energy storage device. In another embodiment of the invention, digital communication between two or more controllers is accomplished over the DC bus through use of the Control Area Network (CAN) protocol. the emitters of the first and second transistors connected to each other; and a resonant capacitor connected between the collectors of the first and second transistors; and wherein the push-pull circuit further comprises a plurality of diodes connected to the bases of the first and second transistors. 14. An arc discharge lamp system, comprising: an elongated lamp envelope defining a closed interior space; at least one gas in the interior space of the lamp envelope; first and second spaced apart electrodes extending generally in axial alignment in the interior space of the lamp envelope, the first and second electrodes capable of generating an arc discharge; a third electrode positioned outside and connected directly to the lamp envelope adjacent to and opposite both the first and second electrodes, said third electrode extending between a pair of spaced apart points of attachments to the lamp envelope, one point being adjacent to the first electrode and the other point being adjacent to the second electrode, the third electrode for receiving a high-voltage high-frequency signal to initiate ionization of said at least one gas; wherein the means for initiating ionization of said at least one gas further comprising an igniter circuit connected to provid