Uninterrupted power supply system and uninterrupted power supply device
AssigneeJuha Co., Ltd.
InventorHyuk Kim
Life of this patent
Estimating the term…
Abstract
An uninterruptible power supply (UPS) system includes a plurality of UPS devices configured to provide a single-phase AC input voltage to a load and a battery when an operating mode is a normal mode and configured to convert power of the battery into a single-phase AC output voltage to provide the single-phase AC output voltage to the load when the operation mode is a blackout mode. Each of the plurality of the UPS devices commonly receives the single-phase AC input voltage to commonly output the single-phase AC output voltage when a configuration mode is a single-phase parallel mode. At least three UPS devices independently receive each of a three-phase AC input voltage to output each of a three-phase AC output voltage when the configuration mode is a three-phase mode.
Claims16
An uninterruptible power supply (UPS) system, comprising:
- a plurality of UPS devices configured to provide a single-phase AC input voltage to a load and a battery when an operating mode is a normal mode and configured to convert power of the battery into a single-phase AC output voltage to provide the single-phase AC output voltage to the load when the operation mode is a blackout mode,
- wherein each of the plurality of the UPS devices commonly receives the single-phase AC input voltage to commonly output the single-phase AC output voltage when a configuration mode is a single-phase parallel mode, and
- wherein at least three UPS devices independently receive each of a three-phase AC input voltage to output each of a three-phase AC output voltage when the configuration mode is a three-phase mode.
An uninterruptible power supply (UPS) device comprising:
- a first transforming circuit configured to commonly receive a single-phase AC input voltage with a separate single-phase UPS device to transmit the received single-phase AC input voltage to a battery when a configuration mode is a single-phase parallel mode and configured to receive a phase voltage of three-phase AC input voltage to transmit the received phase voltage to the battery when the configuration mode is a three-phase mode;
- a second transforming circuit configured to transform a power of the battery into a single-phase AC output voltage to commonly output the converted single-phase AC output voltage with the separate single-phase UPS device when the configuration mode is the single-phase parallel mode and configured to transform the power of the battery into a three-phase AC output voltage to output the converted three phase AC output voltage when the configuration mode is the three-phase mode;
- and
- a control unit including a setting unit and a processor, the setting unit setting the configuration mode and a parameter according to the configuration mode, and the processor controlling an operation mode of the first and second transforming circuits based on the configuration mode and the parameter.
Dependencies are inferred from the claim text.