Ablerex

2013年8月4日星期日

Ablerex Photovoltaic Device Patents

Item	Subject	Summary	Product Type	Application Area
1	Maximum Power Point Tracking Method and Tracker Thereof for a Solar Power System	A maximum power point tracking method and a tracker thereof for a solar power system comprises the steps of: connecting a DC/DC converter to a solar cell; a controller acting the DC/DC converter as a power converter with an active resistance characteristic for supplying power to a DC/AC converter or a DC load; the maximum power point tracking circuit adjusting the DC/DC converter in a direction for changing the active resistance; abserving a change in output power o the solar cell; continuously adjusting the DC/DC converter in the same direction for continuously adjusting the DC/DC converter in the same direction for continuously changing the active resistance if receiving a positive change in the output power o the solar cell, atlernatively, adjusting the DC/DC converter in a reversed direction if receiving a negative change in the output power of the solar cell; the maximum power point tracking circuit repeatedly adjusting the DC/DC converter in the same or reversed direction for searching a maximum power point of the power output of the solar cell, and successively adjusting positions of the DC/DC converter to locate around the maximum power point.	SOLAR

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
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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
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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
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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
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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
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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
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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
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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
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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

Ablerex APF Patents

Item	Subject	Summary	Product Type	Application Area
1	Resonant Protection Kit for Power Supply	The kit using novel method can avoid the harmonic resonance phenomenon, especially for power factor correcting capacitor. This is a more economic way to protect power capacitor. The kit built-in microprocessor with FFT algorithm can calculate effectively over-current amplitude, which shall be converted by the voltage crossing the terminal of power capacitor, and no CT shall be required. The easy-to-install design of this technique, regardless with the current/voltage rating, is flexible and suitable to all of protecting power capacitor application.	APF	TW
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2	Active Harmonic Suppression Equipment and Control Method Therefor	The active harmonic suppression equipment provides the expected compensating current, which is injected into the power feeder to cancel the harmonics current generated by the nonlinear load. Then, the current of utility is nearly sinusoidal. The patented active harmonic suppression technique is capable of smaller ripple current, lower power loss, and lighter weight than that of conventional active electric power filters.	APF	TW
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3	Hybrid Reactive Power Compensation Device-I	The invention is related to a hybrid reactive power compensation device including a passive type reactive power compensator and an active type reactive power compensator serially connected thereto, which are adapted to supply a linearly adjustable reactive power within a predetermined range in the distribution power system. Moreover, the active type reactive power compensator provids with a serial-connected virtual harmonic damping, and thereby it can avoid the power resonance generated between the passive type reactive power compensator and the reactance of power system that may cause destruction of the reactive power compensation device itself and adjacent power facilities.	APF	TW
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4	Hybrid Reactive Power Compensation Device-II	The invention is related to a hybrid reactive power compensation device including a passive type reactive power compensator and an active type reactive power compensator serially connected thereto, which are adapted to supply a linearly adjustable reactive power within a predetermined range in the distribution power system. Moreover, the active type reactive power compensator adjusts a current flowing through the passive type reactive power compensator to be approximated as a sinusoidal waveform, and thereby it can avoid the power resonance generated between the passive type reactive power compensator and the reactance of power system that may cause destruction of the reactive power compensation device itself and adjacent power facilities.	APF	TW
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5	Hybrid Reactive Power Compensation Device-III	The invention is related to a hybrid reactive power compensation device including a passive type reactive power compensator and an active type reactive power compensator serially connected thereto, which are adapted to supply a linearly adjustable reactive power within a predetermined range in the distribution power system. The active type reactive power compensator adjusts a current flowing through the passive type reactive power compensator to be approximated as a sinusoidal waveform, and thereby it can avoid the power resonance generated between itself and the reactance of power system that may destroy the reactive power compensation device and adjacent power facilities.	APF	TW
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6	Power Converter of a Hybrid Power Filter	The technique is related to the power converter of hybrid power filter. This power converter is a bridge configuration, and it consists of a set of the power electronic devices and a dc capacitor. The salient point of this invention is that one line of the power feeder can connect to one of two dc capacitor voltage terminal without passing through connection point of the power electronic switch set. Hence, the number of the power electronic devices used in this invention is less than that used in the conventional power converter. Of course, this technique did a novel power converter of hybrid power filter, and resulted in cheaper cost about the converter.	APF	TW
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7	Reactive Power Compensating Device	A reactive power compensating device applies a small capacitance of a power converter to an ac capacitor to avoid resonance caused by the ac capacitor or linearly adjust the reactive power compensation within a specific range. It is characterized in that the power converter adopts a small amount of power switches (bridge structure omitting one terminal), wherein one power compensating line un-controlled by power switch is directly connected to either of a positive or negative terminal disposed on a dc side of the power converter. Consequently, the reactive power compensating device has an advantage of employing a small amount of the power switches.	APF	TW
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8	Three-Phase Three-Wire Active Power Filter	This three-phase three-wire active power filter consists of only two inverter bridge arms. The power converter has two dc terminals and two ac terminals. Each arm configures by two series connected power electronic devices. Arbitrary one phase un-controlled by power electronic device is directly connected to the arbitrary one of two dc terminals Hence, the number of power electronic devices used in the power converter can be reduced, and the hardware cost can be down.	APF	TW
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9	Active Equipment for Harmonic Suppression	The active harmonic suppression equipment provides the expected compensating current, which is injected into the power feeder to cancel the harmonics current generated by the nonlinear load. Moreover, this equipment can be controlled to supply a fixed or variable reactive power.	APF	TW
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10	Harmonic Suppressible AC/DC converter	A harmonic suppressible AC/DC converter is only adapted to detect an input current and an output DC voltage, which is proportional to the input current, to an input side of the AC/DC converter. The input side of the AC/DC converter acts as a virtual resistor with a linear resistance characteristic, thereby obtaining an input current with high power factors and low harmonic distortion. The AC/DC converter converts energy from a power source to a stabilized DC voltage to supply to a DC load.The input current with high power factors and low harmonic distortion can therefore be provided without detecting and AC volage of a power source. As voltage frequencies of the power source are changed, acting the AC/DC converter as the virtual resistor can synchronously change frequencies of the input current. Under these conditions of changes in voltage frequencies of the power source, the AC/DC converter can be normally operated to obtain the input current with high power factors and low harmonic distortion.	APF	TW
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11	Active Adjusting Device Having Alternating-Current Load Character	An active adjusting device parallel-connects with a load, and then connects to a power source capable of generating an AC current. The active adjusting device comprises an energy-storing capacitance, an energy converter, a high-frequency filter, and a control circuit. The energy-storing capacitance provides a stable direct-current volage, and then the controlcircuit detects the direct-current voltage ofr excuting a closed-circuit control so as to stabilize the direct-current voltage, and to generate a detection current. The detection current is used as a feedback control for generating a drive signal to drive the energy converter so that the energy converter converts the direct-current voltage through the high-frequency filter to generate a first current. The first current parallet-connects with a second current generated from the load so that the AC ccurrent coming from power source. Thus, the load character in relation to the power source is considered as a resister character.	APF	TW
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12	Bidirctional Active Power Conditioner	A bidirctional active power conditioner comprises a DC terminal, a bidirctional DC/DC power converter, a DC/AC inverter and an AC terminal. The DC terminal electrically connects to a DC source. The bidirctional DC/DC power converter can produce a predetermined DC voltage or DC current by controlling the high frequency pulse width modulation. The DC/AC inverter can be operated under lower frequency so as to convert the expected DC voltage signal or DC current signal to a predetermined AC voltage signal or AC current signal. The AC terminal is electrically connected to a load, and the AC terminal can further connects to an AC source. Accoudingly, the bidirctional active power conditioner has the advantages including small installation size, simple control circuit, high efficiency and low installation cost.	APF	TW
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13	Active Power Filter	An active power filter apparatus comprises a power capacitor, a power inverter, a filtering circuit, and a controller. The controller controls the power inverter to be operated as a virtual fundamental frequency resistor to compensate for the losses of the apparatus, or a virtual fundamental frequency capacitor to compensate a load for fundamental frequency reactive power. The controller also controls the power inverter such that the power inverter can provide a specific order harmonic current proportional to the load for attenuating such a specific order of harmonic current of the load, and for selecting an attenuating ratio of such a specific order of harmonic current. The control method utilizes a current control mode to control the apparatus to provide a compensating currentand utilizes source current, a source voltage, and a energy storage capacitor voltage to evaluate a reference signal of the compensating current. The controller receives the two detected currents, including the rao source current and the source current which is filtered its fundamental frequency components. Accordingly, the compensating current can be further accurate.	APF	CN
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14	Active Power Conditioner	An active power conditioner comprises a first serial-connected power switch circuit, a second serial-connected power switch circuit, and a third serial-connected power switch circuit. When a source voltage varies, one of the second and third serial-connected power switch circuits of the active power conditioner is actuated under higher frequency, and the other two serial-connected power switch circuits are actuated under lower frequency. Accrodingly, the active power conditioner can fix a voltage across a load without using a power capacitor.	APF	TW
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15	Modularized Active Power Filter	A modularized active power filter comprises a control module and at least one power module. The control module can automatically detect the installation numbers of the power modules being installed and control each of the power modules such that all the power modules can jointly provide a total compensation demanded capacity. The total compensation demanded capacity equals to a required demanded capacity of a load. Accordingly, the active power filter has the advantages of flexible installation module numbers, short maintenance time, mass production, and reducing cost.	APF	CN
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