Ablerex UPS Patents

Item Subject Summary Product Type Application Area 1 Backup Display for UPS A novel calculating method is built inside the microprocessor to display remaining backup time on the front panel of UPS. The remaining backup time display on the front panel shall be refreshed at real time according to UPS load condition. Especially, the patented technique also developed the self-learning mode; hence the microprocessor can automatically correct the real capacity of various batteries. UPS TW 2 Backup Display for UPS A novel calculating method is built inside the microprocessor to display remaining backup time on the front panel of UPS. The remaining backup time display on the front panel shall be refreshed at real time according to UPS load condition. Especially, the patented technique also developed the self-learning mode; hence the microprocessor can automatically correct the real capacity of various batteries. UPS TW 3 Control Module for a Fan Filter Unit High-Tech manufacturers such as semiconductor factories and wafer plants have installed a great quality of fan filters in clean rooms. In order to control fans on/off and detect the operational status of fans, the fan filter control units shall be adapted. The fan control module employing this patented technique provides an special design warning signal, which displays abnormal fan motor status and shall be kept inside memory circuit until people reset it manually. UPS TW CN 4 DC/DC Boost Converter and Control Method Therefor A dc/dc step-up regulator with the unique structure, which performs high efficiency and wide input voltage range, can provide a stable dc voltage at its output terminal. The electronic switch of the regulator using PWM technology will automatically start to operate, when the input voltage drops lower than the default level. It is suitable to be applied on ride-through backup power systems such like UPS and DC Bank for ASD. In order to keep the continuously running of power supply system or motor when the input voltage downs, the regulator delivers the stable dc power to the input terminals of inverter inside UPS or ASD. The input source of the regulator may be rectifier or battery. UPS TW CN US 5 Multi-battery Monitoring Kit A multi-battery monitoring kit mainly includes a data-collecting/analyzing unit, a plurality of data-accessing modules and a plurality of sensing modules. The data-collecting/analyzing unit adapted master-free technique can play either mater or slave unit, according to system figuration requirement. The high speed scanning design is perfected especially for the battery monitoring application of extreme high-rate current discharge within the short time. It shall perform perfectly and never lose the important data even on some ride-through backup power systems such like UPS and DC Bank for ASD. UPS TW CN 6 Control Method for Parallel-connected Power Converters The invention is related to a power converter control method and more particularly applied in a parallel-connected operation, thereby automatically balancing the load current distribution among power converters and reducing the total harmonic distortion of output voltage under the nonlinear load. This method does not use the communication of distribution current signals among the parallel-connected power converters and does not require extra hardware component, so it will substantially increase the reliability of inverter operation in parallel mode. UPS TW CN US 7 Bi-Directional DC/DC Power Converter Having a Neutral Terminal The invention is related to a bi-directional dc/dc power converter having a neutral terminal. The power converter can be operated as either a step-up converter or step-down converter. The two dc voltages with the same amplitude are serially connected to the neutral terminal to provide a double voltage at the output voltage terminal set. The power converter adapted between the dc source (such as battery) and the DC side of half-bridge inverter can overcome cost-effectively the single output terminal set problem of convenient boost converter. UPS TW CN US 8 Backup Power Supply System with a Null Transfer Time The invention is related to a backup power supply system with a null transfer time. More particularly, the inventive technique is applied to a dc/ac power inverter for avoiding a short period of power interruption during the duration of the power transfer caused by the mechanical switch operation in the output terminal of the dc/ac power inverter. When power utility is normal, the inverter shall operate parallel link with power utility and keep zero current output as hot-standby mode. Once power utility down, the static switch shall block the connection between power utility and load, then inverter supplies power to load without any interruption. That shall be the best one of economic operation modes for backup power system such as UPS. UPS TW CN US 9 Switching Device for RS-232 Serial Port and USB Serial Port The invention relates to an automatically switching device for RS-232 serial port and USB serial port. More particularly, the inventive technique achieved the special communication feature via both a RS-232 serial port and an USB serial port. A computer and peripherals thereof are able to communicate with the RS-232 serial port or the USB serial port. The simple and cheap microprocessor are mounted inside most of micro-UPS, the processor cannot offer two communication ports. This invention provided an economic solution way. UPS TW CN US 10 Method For Determining State-of-Health of Battery A method for determining state-of-health o batteries comprises the steps of: providing data of discharge voltages and currents of a battery; setting a predetermined time interval and an acceptable value of current variation therein; analyzing voltage and current variations within the predetermined time interval; recording the data o discharge voltages, discharge current and the voltage and current variations thereof; comparing the discharge voltages and the voltage variations thereof within the acceptable value of the current variation; and outputting the results as a health index of the battery. UPS TW CN US 11 UPS System Having a Function of Parallet Operation A UPS system having a function of parallel operation includes one or a plurality of UPS units. The UPS unit includes a DC/AC inverter and a control circuit. The control circuit is used to control the DC/AC inverter, and includes a voltage feedback control circuit and a current feedforward control circuit. The voltage feedback control circuit further includes a voltage-regulating circuit and a waveform-controlling circuit for controlling the amplitude and the waveform of load voltage respectively. The current feedforward control circuit detects an output current of the DC/AC inverter to retrieve its fundamental component and harmonic component which are operated as a virtual fundamental resistor and the virtual harmonic resistor. The virtual fundamental resistor and the virtual harmonic resistor are serially connected to an output terminal of the DC/AC inverter . Outputs of the voltage feedback control circuit and the current feedforward control circuit are added to form modulation signal which is sent to a PWM circuit to obtain drive singals of the DC/AC inverter. UPS CN