Abstract: A method for operating a power factor correction (PFC) circuit of an uninterruptible power supply (UPS) apparatus is provided. The PFC circuit includes two T-type converters, and each of the T-type converters includes four switching tubes. The method includes: converting AC input voltage into a positive bus voltage across a first capacitor and a negative bus voltage across a second capacitor that is connected in series with the first capacitor when the UPS apparatus is operated under a normal supply mode; and controlling conduction states of the switching tubes of the T-type converters to balance the positive bus voltage and the negative bus voltage when the UPS apparatus is operated under a battery supply mode.

Abstract: A power conversion system includes an uninterruptible power apparatus, a generator module, and a control unit. The uninterruptible power apparatus includes a conversion module and a DC-to-AC conversion unit. The control unit controls the conversion module and the generator module according a power command so that a first average power provided from a DC power source coupled to the conversion module is slowly increased or decreased, and the control unit controls the conversion module according to a bus voltage so that a second average power provided from a mains is slowly decreased or increased corresponding to the first average power.

Abstract: A method for operating a power factor correction (PFC) circuit of an uninterruptible power supply (UPS) apparatus is provided. The PFC circuit includes two T-type converters, and each of the T-type converters includes four switching tubes. The method includes: converting AC input voltage into a positive bus voltage across a first capacitor and a negative bus voltage across a second capacitor that is connected in series with the first capacitor when the UPS apparatus is operated under a normal supply mode; and controlling conduction states of the switching tubes of the T-type converters to balance the positive bus voltage and the negative bus voltage when the UPS apparatus is operated under a battery supply mode.

Abstract: A power storage apparatus includes at least one battery module and a charging module. Each battery module includes a battery assembly, a protection unit, and a detection unit. The protection unit is connected in series to the battery assembly. The detection unit is connected in parallel to the protection unit, and the detection unit has an indication element. The charging module is connected in parallel to the at least one battery module to charge the battery assembly. When a voltage difference value of the protection unit is greater than a voltage setting value, the voltage difference value enables the indication element. Accordingly, simple circuit components installed in each battery module are used to individually protect the battery module and detect an abnormal operation of the battery module.

Abstract: A power conversion system includes an uninterruptible power apparatus, a generator module, and a control unit. The uninterruptible power apparatus includes a conversion module and a DC-to-AC conversion unit. The control unit controls the conversion module and the generator module according a power command so that a first average power provided from a DC power source coupled to the conversion module is slowly increased or decreased, and the control unit controls the conversion module according to a bus voltage so that a second average power provided from a mains is slowly decreased or increased corresponding to the first average power.

Abstract: A power storage apparatus includes at least one battery module and a charging module. Each battery module includes a battery assembly, a protection unit, and a detection unit. The protection unit is connected in series to the battery assembly. The detection unit is connected in parallel to the protection unit, and the detection unit has an indication element. The charging module is connected in parallel to the at least one battery module to charge the battery assembly. When a voltage difference value of the protection unit is greater than a voltage setting value, the voltage difference value enables the indication element. Accordingly, simple circuit components installed in each battery module are used to individually protect the battery module and detect an abnormal operation of the battery module.

Abstract: A standalone uninterruptible power supply includes a cabinet and a power supply unit. The cabinet has a frame, rails and carrier plates removably disposed on the rails. The power supply unit installed in the frame includes a control module, a power input module, a power output module and cables. The control module is installed in one carrier plate. The power input module and the power output module are electrically connected with the control module and installed in another carrier plate. The cables are detachably connected with the control module, the input module and the power output module.

Abstract: A standalone uninterruptible power supply includes a cabinet and a power supply unit. The cabinet has a frame, rails and carrier plates removably disposed on the rails. The power supply unit installed in the frame includes a control module, a power input module, a power output module and cables. The control module is installed in one carrier plate. The power input module and the power output module are electrically connected with the control module and installed in another carrier plate. The cables are detachably connected with the control module, the input module and the power output module.

Abstract: A high-voltage power supply module includes a front-end power converting circuit, a first back-end circuit, a second back-end circuit, a ground terminal and a controlling unit. The front-end power converting circuit receives an input voltage and converts the input voltage into a bus voltage. The first back-end circuit receives the bus voltage and outputs a first voltage. The second back-end circuit receives the bus voltage and outputs a second voltage. The first back-end circuit and the second back-end circuit are connected with a connecting terminal. The ground terminal is connected with the connecting terminal. In response to the first voltage and the second voltage, a first control signal and a second control signal are respectively issued from the controlling unit to the first back-end circuit and the second back-end circuit, thereby adjusting the magnitudes of the first voltage and the second voltage.

Abstract: An uninterruptible power supply includes plural power units, plural output capacitor units, a capacitor energy bleeder circuit, plural output units, a detecting unit and a controlling unit. The capacitor energy bleeder circuit is electrically connected to the plural output capacitor units. The plural output units are connected with each other in parallel to issue the output voltage to the power output side and avoid returning electrical energy from the power output side back to the capacitor energy bleeder circuit. The detecting unit is used for detecting operating statuses of the plural power units. The controlling unit is used for controlling operations of the plural power units and the capacitor energy bleeder circuit. In response to a to-be-interrupted status of a specified power unit, the controlling unit controls the capacitor energy bleeder circuit to discharge electrical energy of the output capacitor unit corresponding to the specified power unit.

Abstract: An uninterruptible power supply includes plural power modules and a controlling module. The power modules are electrically connected with a power source, an energy storage unit and a load for converting an input voltage into an output voltage. The controlling module is electrically connected with the plural power modules and the energy storage unit for detecting a storage voltage of the energy storage unit and dynamically adjusting the output voltage of the plural power modules according to the storage voltage of the energy storage unit. If the controlling module is abnormal, the magnitude of the output voltage is maintained at a constant voltage value.

Abstract: A power converter and a method of controlling the same are disclosed. The power converter includes a transformer, a first switch unit, a second switch unit, and a control unit. The control unit turns on/off the first switch unit and the second switch unit according to magnitude of an input voltage. When the input voltage is at a high voltage range, the control unit turns on the first switch unit and turns off the second switch unit; when the input voltage is at a low voltage range, the control unit turns on the second switch unit and turns off the first switch unit.

Abstract: An integrated inverter apparatus and a method of operating the same are disclosed. The integrated inverter apparatus includes at least two inverter units and a control unit. The inverter units are electrically connected in parallel to each other. At least one of the inverter units has a plurality of field-effect transistor (FET) switches and at least another one of the inverter units has a plurality of insulated gate bipolar transistor (IBGT) switches. The control unit is electrically connected to the inverter units to control the transistor switches of the corresponding inverter units when an optimal efficiency of the integrated inverter apparatus is reached at different operation conditions of the inverter units.

Abstract: A high-voltage power supply module includes a front-end power converting circuit, a first back-end circuit, a second back-end circuit, a ground terminal and a controlling unit. The front-end power converting circuit receives an input voltage and converts the input voltage into a bus voltage. The first back-end circuit receives the bus voltage and outputs a first voltage. The second back-end circuit receives the bus voltage and outputs a second voltage. The first back-end circuit and the second back-end circuit are connected with a connecting terminal. The ground terminal is connected with the connecting terminal. In response to the first voltage and the second voltage, a first control signal and a second control signal are respectively issued from the controlling unit to the first back-end circuit and the second back-end circuit, thereby adjusting the magnitudes of the first voltage and the second voltage.

Abstract: A charging circuit includes a main power circuit, a DC-to-DC converting circuit, a detection circuit and a controller. The main power circuit is electrically connected to a power source for converting an input voltage from the power source into a first voltage. The DC-to-DC converting circuit is electrically connected to the main power circuit for converting the first voltage into a second voltage to charge the energy storage element. The detection circuit is electrically connected to the main power circuit and the DC-to-DC converting circuit for detecting a terminal voltage of the energy storage element and the first voltage from the main power circuit, thereby generating a feedback signal. The controller is electrically connected to the detection circuit and the main power circuit for controlling operations of the first switching element in response to the feedback signal, so that the first voltage is adjustable according to the second voltage.

Abstract: An uninterruptible power supply includes an input switching circuit, an AC-to-DC converting circuit, a bus capacitor, an energy storage unit, a charging circuit, a DC-to-DC converting circuit, and a system control circuit. The input switching circuit receives an input AC voltage. The AC-to-DC converting circuit is used for converting the input AC voltage into a bus voltage. The energy storage unit is used for storing electric energy. The charging circuit is used for charging the energy storage unit. The DC-to-DC converting circuit is used for converting the energy storage unit connecting node voltage into a regulated DC voltage. The system control circuit is used for controlling operations of the uninterruptible power supply. When the uninterruptible power supply is initiated, the AC-to-DC converting circuit is disabled and the bus capacitor is charged by the DC-to-DC converting circuit under control of the system control circuit.

Abstract: An uninterruptible power supply includes plural power modules and a controlling module. The power modules are electrically connected with a power source, an energy storage unit and a load for converting an input voltage into an output voltage. The controlling module is electrically connected with the plural power modules and the energy storage unit for detecting a storage voltage of the energy storage unit and dynamically adjusting the output voltage of the plural power modules according to the storage voltage of the energy storage unit. If the controlling module is abnormal, the magnitude of the output voltage is maintained at a constant voltage value.

Abstract: An uninterruptible power supply includes plural power units, plural output capacitor units, a capacitor energy bleeder circuit, plural output units, a detecting unit and a controlling unit. The capacitor energy bleeder circuit is electrically connected to the plural output capacitor units. The plural output units are connected with each other in parallel to issue the output voltage to the power output side and avoid returning electrical energy from the power output side back to the capacitor energy bleeder circuit. The detecting unit is used for detecting operating statuses of the plural power units. The controlling unit is used for controlling operations of the plural power units and the capacitor energy bleeder circuit. In response to a to-be-interrupted status of a specified power unit, the controlling unit controls the capacitor energy bleeder circuit to discharge electrical energy of the output capacitor unit corresponding to the specified power unit.

Abstract: The invention discloses a high-voltage direct-current uninterruptible power supply system configured to be connected to a plurality of power sources. The uninterruptible power supply system according to the invention includes a plurality of power modules, each of which is connected to a power source for receiving an input power from the power source connected thereto and converting the input power into a direct-current output power, a control module connected to the power modules through communication lines for managing the power modules, and a power distribution unit connected to a DC voltage bus for relaying the direct-current output power to a plurality of electronic devices.

Abstract: An uninterruptible power supply includes an input switching circuit, an AC-to-DC converting circuit, a bus capacitor, an energy storage unit, a charging circuit, a DC-to-DC converting circuit, and a system control circuit. The input switching circuit receives an input AC voltage. The AC-to-DC converting circuit is used for converting the input AC voltage into a bus voltage. The energy storage unit is used for storing electric energy. The charging circuit is used for charging the energy storage unit. The DC-to-DC converting circuit is used for converting the energy storage unit connecting node voltage into a regulated DC voltage. The system control circuit is used for controlling operations of the uninterruptible power supply. When the uninterruptible power supply is initiated, the AC-to-DC converting circuit is disabled and the bus capacitor is charged by the DC-to-DC converting circuit under control of the system control circuit.