摘要:
A power supply system with an automatic transfer function includes a main-power-loop apparatus, a backup-power-loop apparatus, and a control unit. The main-power-loop apparatus has a first primary relay switch and a first SCR switch. The backup-power-loop apparatus has a second primary relay switch and a second SCR switch. The control unit turns on the first primary relay switch and the first SCR switch when a main power source can normally supply power, thus supplying power to a load via the main-power-loop apparatus by the main power source. The control unit turns on the second primary relay switch and the second SCR switch when the main power source cannot normally supply power, thus supplying power to the load via the backup-power-loop apparatus by a backup power source.
摘要:
A power supply system with an automatic transfer function includes a main-power-loop apparatus, a backup-power-loop apparatus, and a control unit. The main-power-loop apparatus has a first primary relay switch and a first SCR switch. The backup-power-loop apparatus has a second primary relay switch and a second SCR switch. The control unit turns on the first primary relay switch and the first SCR switch when a main power source can normally supply power, thus supplying power to a load via the main-power-loop apparatus by the main power source. The control unit turns on the second primary relay switch and the second SCR switch when the main power source cannot normally supply power, thus supplying power to the load via the backup-power-loop apparatus by a backup power source.
摘要:
Disclosed is an uninterruptible power supply including a switch connected between an external power source and a load, a power supply module connected to the external power source and the switch for receiving and converting an input power and supplying converted power to the load, a battery module connected to the power supply module for storing electric power or supplying electric power to the power supply module, a control module connected to the external power source and the battery module and powered by the external power source or the battery module for generating a control signal according to a specific operating status of the power supply module to manipulate the switch so as to supply power to the load through the power supply module or a bypass route, and a display panel connected to and powered through the control module for receiving and displaying system status information from the control module.
摘要:
Disclosed is a parallel-connected uninterruptible power supply system connected with a power source and a load. The uninterruptible power supply system includes a power distribution circuit having a first connector, a plurality of uninterruptible power supplies having a plurality of second connectors, and a plurality of transmission lines having a plurality of third connectors. The first connectors, the second connectors and the third connectors each includes a first conducting structure and a second conducting structure. When the second conducting structure of the third connector is detached from the second conducting structure of the first connector or the second conducting structure of the second connector, the second conducting structures are detached from each other first so that the pull-down circuit of the corresponding uninterruptible power supply generates a control signal to a controller to stop the operation of the uninterruptible power supply. Next, the third connector is detached from the first connector or the second connector so as to remove the malfunctioned uninterruptible power supply.
摘要:
A parallel DC-to-AC power inverter system is provided. The parallel DC-to-AC power inverter system has a first DC-to-AC power inverter electrically connected in parallel with a second DC-to-AC power inverter, and each of the DC-to-AC power inverters includes an input port, an output port, a switching circuit electrically connected between the input port and the output port responsive to inverter control signals to convert a DC voltage at the input port to a first AC output voltage, an inductor-capacitor filter electrically connected to the switching circuit for filtering the first AC output voltage to an AC output voltage at output port, and a controller module for detecting an inductor current at the inductor-capacitor filter to generate an AC inductor current signal, for detecting the AC output voltage at the output terminals and transforming the AC output voltage to generate a first AC reference current signal, for detecting a load current at output port to generate an AC load current signal, for generating a second AC reference current signal by adding the first AC reference current signal to the AC load current signal, for performing a numerical operation of the second AC reference current signal of the first DC-to-AC power inverter and the second AC reference current signal of the second DC-to-AC power inverter to generate an AC reference current signal, and for generating the inverter control signals responsive to the AC reference current signal and the AC inductor current signal by sensing the inductor current at the inductor-capacitor filter. The related methods are also discussed.
摘要:
Disclosed is an uninterruptible power supply including a switch connected between an external power source and a load, a power supply module connected to the external power source and the switch for receiving and converting an input power and supplying converted power to the load, a battery module connected to the power supply module for storing electric power or supplying electric power to the power supply module, a control module connected to the external power source and the battery module and powered by the external power source or the battery module for generating a control signal according to a specific operating status of the power supply module to manipulate the switch so as to supply power to the load through the power supply module or a bypass route, and a display panel connected to and powered through the control module for receiving and displaying system status information from the control module.
摘要:
Disclosed is a parallel-connected uninterruptible power supply system connected with a power source and a load. The uninterruptible power supply system includes a power distribution circuit having a first connector, a plurality of uninterruptible power supplies having a plurality of second connectors, and a plurality of transmission lines having a plurality of third connectors. The first connectors, the second connectors and the third connectors each includes a first conducting structure and a second conducting structure. When the second conducting structure of the third connector is detached from the second conducting structure of the first connector or the second conducting structure of the second connector, the second conducting structures are detached from each other first so that the pull-down circuit of the corresponding uninterruptible power supply generates a control signal to a controller to stop the operation of the uninterruptible power supply. Next, the third connector is detached from the first connector or the second connector so as to remove the malfunctioned uninterruptible power supply.
摘要:
A charging circuit in a back-up power system is provided. The charging circuit includes an output terminal electrically connected to a main power for providing an AC output voltage, a transformer having a secondary electrically connected to the output terminal, an energy storage and supply device providing a DC voltage, an inverter having an output electrically connected to a primary of the transformer and an input electrically connected to the energy storage and supply device and including four gate control switch devices to form a bridge switching device, a bridge rectifier having an input electrically connected to the output of the inverter in parallel, and a charging switch device electrically connected to an output of the bridge rectifier in parallel so as to charge the electrical energy storage and supply device through one of a conduction state and a cut-off state of said charging switch device.
摘要:
Provided is a parallel uninterruptible power supply system including a first uninterruptible power supply and a second uninterruptible power supply connected in parallel with each other, and a connector interconnecting a first signal transmission line of the first uninterruptible power supply and a second signal transmission line of the second uninterruptible power supply. A first control module of the first uninterruptible power supply can directly receive data signal outputted from a second power supply module and a second battery module of the second uninterruptible power supply, and a second control module of the second uninterruptible power supply can directly receive data signal outputted from a first power supply module and a first battery module of first uninterruptible power supply, so that the first uninterruptible power supply and the second uninterruptible power supply can communicate directly with each other.