Abstract: A power device capable of displaying various statuses and a displaying method are provided. The power device includes: a central microprocessor, a power conversion circuit, an LED bar (or a light bar) circuit, and a battery pack. The central microprocessor intrinsically has color setting and control logic and is internally provided with a color setting and control logic circuit. The power device is externally connected to a utility power source, a solar photovoltaic power source, a backup battery pack, and a load. The color setting and control logic circuit enables the LED bar circuit to correspondingly emit LED light of at least two colors according to different power sources supplied to the load or a battery capacity, and the LED light is displayed in a breathing-like manner. The central microprocessor adjusts a breathing rate of the LED light according to a power consumption of the load.

Abstract: An uninterruptible power system includes a power converting engine, a UPS control circuit, and a control display circuit. The control display circuit is detachable, the control display circuit is detachably mounted on the UPS control circuit through at least a connection between the control output interface and the display input interface. When the control display circuit is detached from the UPS control circuit, the control display circuit communicates with the UPS control circuit in a wireless communication manner.

Abstract: An uninterruptible power supply capable of intelligently controlling direct current (DC) output is provided. The uninterruptible power supply includes a power conversion integrated circuit, a first switch, a first controller, a DC to DC (DC-DC) converter, and a second controller and a battery pack. The first controller generates a first control signal and a second control signal, the second control signal is connected to the power conversion integrated circuit, and the first control signal is connected to the second controller configured inside the DC-DC converter. The battery pack is connected to the DC-DC converter to form a first power path, the DC-DC converter is connected to the power conversion integrated circuit to form a second power path, and the battery pack is connected to the power conversion integrated circuit to form a third power path.

Abstract: An improved power supply circuit which includes a utility power source, a plurality of silicon controlled rectifiers (SCR1-SCR6), a first battery, a second battery, a first inductor, a second inductor, a first capacitor, a second capacitor and a plurality of power switch elements (Q1˜Q4). When the utility power source is in a positive half cycle, the SCR1 and the SCR6 are turned on; the SCR2, the SCR3, the SCR4 and the SCR5 are turned off; the Q1 is activated to make the electrical energy directed to the first capacitor through the diode of the Q3, and the voltage on the first capacitor is maintained at a constant. Meanwhile, the Q2 is turned off, the Q4 is operated to let the current flow through the second inductor to charge the second battery.

Abstract: An optical-controlled driving circuit adapts to a high utility power environment with high voltages, large currents and severe surges, and includes an optical-controlled switch circuit, an SCR with optical-controlled driver and a main circuit. The optical-controlled switch circuit includes an optical-controlled component and a first switching transistor that are connected in serial. The SCR with optical-controlled driver includes at least two switching transistors that are connected in serial and a plurality of diodes, and is coupled to the main circuit. The optical-controlled driving circuit generates a driving current according to the voltage of a utility power. When the optical-controlled driving circuit is used in a DC converter using an SCR as a switch element, the optical-controlled driving circuit helps to increase the operation efficiency when the DC converter works under a light load.

Abstract: The present invention provides an uninterruptible power supply display device which includes a signal bus and a plurality of power supply modules each having a power supply unit, a display unit and a control unit. The plurality of power supply modules electrically connect with the signal bus. The control unit on each power supply module simultaneously electrically connects with the power supply unit, the display unit and the signal bus. Each display unit can be operated under a single machine display mode or a system display mode. When under the single machine display mode, the display unit displays the operation message of the corresponding power supply module. When under the system display mode, the display unit generates a system display screen to display the operation messages of the plurality of power supply modules.

Abstract: A modular uninterruptible power supply (UPS) system includes a housing having a plurality of slots, wherein a power module or a battery module can be selectively inserted into each of the slots; each of the slots is selectively disposed with a first connector and a second connector or only with the second connector; the back of the power module is disposed with a first connecting module and a second connecting module, and the first connecting module and the second connecting module are electrically connected to the first connector and the second connector when the power module is inserted into the slots; the back of the battery module is disposed with a second connecting module, and the second connecting module is electrically connected to the second connector.

Abstract: An integrated uninterruptible power supply (UPS) includes a UPS main board coupled with a controller and a battery pack. The UPS main board includes an AC (alternating current) input, a noise filtering surge protecting high voltage circuit breaker, a high power factor correction rectifier, a DC (direct current) bus, an inverter, a high power charger, a first battery contact, a second battery contact, a DC/DC convertor and an AC output. The present disclosure integrates a noise filter, a surge protector and a high voltage circuit breaker, and integrates a high power charger in the same circuit board. Therefore, the present disclosure lowers the material and production costs of UPS products, and decreases the circuit board size. In addition, the present disclosure decreases the total harmonic distortion, the ripples of input current, and the crosstalk between circuits, and increases the input power factor, the charging efficiency and the battery life.

Abstract: The instant disclosure relates to a chassis structure for industrial uninterruptible power supply system including: a chassis having a frame and a front side panel, left side panel, right side panel, rear side panel and top panel installed on the frame; the chassis has a plurality of spacer on the bottom thereof for lifting the chassis from the ground for a distance to forming a gas-intake space; a plurality of protective plates disposed around the gas-intake space, each protective plate has a plurality of gas-intake hole; a bottom plate structure disposed between the bottom of the chassis and the gas-intake space and has at least a gas-intake gap; at least a venting hole disposed on the top panel of the chassis, each venting hole has at least an exhaust fan for outputting a gas from the chassis.

Abstract: Disclosed is a voltage regulating circuit, comprising an input end, an output end, a protecting switch, a first switch, a second switch, a third switch, a first coil and a second coil. The third switch comprises a first terminal and a second terminal. The second terminal of the third switch is connected to a third terminal of the first switch. One end of the first coil is connected to a second terminal of the first switch, and the other end of the first coil is connected to a third terminal of the first switch. One end of the second coil is connected to a first terminal of the third switch, and the other end of the second coil is connected to a fourth terminal of the protecting switch. Different connections between switches and the transformer provide various voltage adjustments to reduce power loss and to increase power transformation efficiency.

Abstract: A bridge circuit and a short-circuit protection method thereof. The bridge circuit includes an input power unit, a converter unit, a first capacitor, a second capacitor, a detection unit and a bridge inverter unit. The input power unit includes a first electrode and a second electrode. The converter unit is coupled to the input power unit. The first capacitor includes a first terminal and a second terminal. The second capacitor includes a first terminal and a second terminal. The bridge inverter unit includes a plurality of switches and is coupled to the converter unit, the first capacitor, the second capacitor, the detection unit and the second electrode. The detection unit issues a short-circuit signal to a control unit when the detection unit detects a current variation on the second capacitor.

Abstract: An uninterruptible power supply system including a rectification circuit, a power calibrating conversion circuit, an inverting conversion circuit, an LC circuit, a first output switch, a second output switch and a relay switch is disclosed. The rectification circuit couples to the main electricity. The power calibrating conversion circuit couples to the rectification circuit, and includes an independent drive unit and a switch unit. The inverting conversion circuit couples to the power calibrating conversion circuit. The LC circuit couples between output neutral terminal and output ground terminal. The first output switch couples between the LC circuit and the inverting conversion circuit. The second output switch couples between the inverting conversion circuit and output live terminal. The relay switch couples between the input neutral terminal and the LC circuit. When the relay switch turns on, the input neutral terminal connects with the output neutral terminal through the LC circuit.

Abstract: A total harmonic current distortion (THDi) control circuit includes a power factor correction circuit and a control circuit. The power factor correction circuit includes a boost unit, an inverter unit, and a feedback unit. The boost unit includes a switch element and a current detection element series-coupled to the switch element. The feedback unit operatively detects an output voltage and an output current of the power factor correction circuit. The control circuit calculates an output power according to the output voltage and the output current, and calculates an input voltage and an input current according to the output power. The control circuit outputs a pulse width modulation signal and controls a conduction current generated by the switch element according to the input current. The control circuit adjusts the duty cycle of the pulse width modulation signal according to the conduction current detected by the current detection element.

Abstract: A converter with adjustable output voltage is coupled to a first power source and a second power source. The converter comprises a transformer, a first conversion circuit, a second conversion circuit, a resonant circuit and a regulating circuit. The first conversion circuit has a plurality of first switch elements, each of the first switch elements is coupled to the transformer. The second conversion circuit has a plurality of second switch elements, and each of the second switch elements is coupled to the transformer. The resonant circuit comprises a first inductor, at least one first capacitor and a second inductor. The first inductor is coupled in series to the transformer, and the first capacitor is coupled in parallel to the second conversion circuit. The second inductor is coupled to the first capacitor. The regulating circuit is coupled between the second power source and the second conversion circuit.

Abstract: Disclosed is an uninterrupted power supply apparatus, comprising a rectifying unit outputs a positive half-cycle of voltage potential and a negative half-cycle of voltage potential; a backup battery outputs a backup voltage; a first boost unit receives the positive half-cycle of voltage potential or the backup voltage and outputs a first voltage; a second boost unit receives the negative half-cycle of voltage potential or the backup voltage and outputs a second voltage; a current shunt unit receives the first voltage and the second voltage and outputs an AC output voltage; a charge circuit, coupled to the rectifying unit, the backup battery, and the first and/or the second boost unit, for being capable of controlling the first and/or the second boost unit to either store a charging power or charge the backup battery by applying the stored charging power alternatively and successively.

Abstract: Disclosed is an uninterrupted power supply apparatus, comprising a rectifying unit outputs a positive half-cycle of voltage potential and a negative half-cycle of voltage potential; a backup battery outputs a backup voltage; a first boost unit receives the positive half-cycle of voltage potential or the backup voltage and outputs a first voltage; a second boost unit receives the negative half-cycle of voltage potential or the backup voltage and outputs a second voltage; a current shunt unit receives the first voltage and the second voltage and outputs an AC output voltage; a charge circuit, coupled to the rectifying unit, the backup battery, and the first and/or the second boost unit, for being capable of controlling the first and/or the second boost unit to either store a charging power or charge the backup battery by applying the stored charging power alternatively and successively.