TWI496397B - Electrical energy recycling system for power supply - Google Patents

Description

Power supply power recovery system

The present invention relates to a burn-in test system for a direct current power supply, and more particularly to an energy recovery system for a direct current power supply.

Since the development of human civilization, the environmental pollution and resource depletion have caused many natural natural disasters and awakened the alarm of the importance of environmental protection. Since then, in order to achieve energy conservation and carbon reduction, many different fields of science and technology pioneers have targeted Environmentally friendly functions are improved. Among them, like the power supply, the manufacturer will find the most suitable material for the components of the power supply, or design the most suitable module, such as the filter module or the buck-boost module to minimize Loss, the purpose of maximum efficiency.

In addition to the above-mentioned improved directions, it can be seen that while the operating speed and frequency of electronic components continue to increase, the demand for power provided by the utility grid is relatively increased, and in such cases, it is effective. The need to use electricity to operate power-consuming components and avoid wasted energy has also begun to gain attention, as is often the case for recycling electricity. It is to save excess energy from the power supply to the power network to save energy consumption. In addition, during the test phase of the power supply, there is also a need to accurately measure the performance of each energy consuming component or device to verify whether the power supply maintains a predetermined power parameter with minimal power. Within the tolerance, and sometimes, it is sometimes necessary to verify that the current supply voltage protection of the power supply is normal, such as over current (OCP), over voltage (OVP), (AC) low voltage (AC UVP), (DC) Low voltage (DC UVP), over load (OPP), over temperature (OTP), short circuit (SCP) and surge surge (SIP).

Please refer to the first figure, which is a block diagram of the burn-in test system of the conventional power supply. In general, the power supply needs to perform a burn-in test for about 24 to 72 hours to verify the power supply. The reliability and stability of the device, as shown in the first figure, the conventional test system of the power supply of the power supply includes a resistive load A1 (resistor tank) as a load of the test power supply T. In this example, after the test power supply T delivers power to the resistive load A1, the power is converted into thermal energy and wasted, thus, in addition to wasting the power, it also causes additional energy in the air conditioning system. Consumption.

In order to save energy consumption and reduce the cost of burn-in testing, energy recovery mechanisms are usually used in the burn-in test system to avoid excess energy being consumed. In recent years, it has been applied to DC power supplies and uninterruptible power supplies. In the burning test of UPS, energy recovery technology is gradually being widely used. Please refer to the second figure, which is a conventional power source with energy recovery system. A block diagram of the burner test system of the supplier. As shown in the second figure, the energy recovery system includes a boost converter B1 for extracting load current from a test power supply T and converting it into a suitable DC voltage, and a buck converter B2. The output voltage of the boost converter B1 is adjusted to a preset DC voltage. The energy recovery system further includes a DC-AC converter B3 for converting the output DC voltage of the buck converter B2 into an AC voltage, and an output filter B4 for removing the DC-AC converter B3. The high-frequency harmonics in the AC current are output, and the output AC current of the output filter B4 is injected into the power network to complete the energy recovery operation. Since the boost converter B1, the buck converter B2, and the DC-AC converter B3 have high energy conversion efficiency, most of the energy can be transferred back to the power network.

In addition, for electronic ballasts used to illuminate gas discharge lamps, such as fluorescent tubes, burn-in testing is also required, which is well known to those skilled in the art, electronic ballasts. The output is an AC current source with high frequency (about 30~60 kHz). Therefore, the electronic ballast can be regarded as an AC current power supply. Under normal circumstances, The discharge lamp will show the characteristics of the resistor. Therefore, the electronic ballast uses the power resistor as the load device for the burn-in test. However, under such test conditions, a large amount of energy is wasted into thermal energy and is wasted, and this leads to additional energy consumption in the air conditioning system.

Therefore, in view of the above-mentioned conventional technology, there is still much room for improvement. Therefore, the inventor of the present invention has designed the power energy recovery system of the power supply of the present invention.

The main object of the present invention is to provide a power energy recovery system for a power supply, which can reduce heat loss during energy conversion, recover the tested power, and maintain high efficiency, so that the power utilization rate is optimal; It is also possible to test multiple power supplies at the same time, allocate appropriate power, control the appropriate time, and optimize the efficiency of the burn-in test.

In order to achieve the object of the present invention, the inventor of the present invention designs a power energy recovery system for a power supply, which is connected to an urban alternating current and is used for testing a power supply to be tested. The power energy recovery system of the power supply includes: a current converter is connected to the urban alternating current and one of the input terminals of the power supply to be tested, to rectify the alternating current provided by the urban alternating current into a first direct current, and simultaneously generate an input voltage, and then input To the power supply to be tested, wherein the power supply to be tested adjusts the first direct current to a second direct current and generates an output voltage; a voltage up controller is respectively connected to the input end And connecting the output end of the power supply to be tested, and comprising: a first boosting unit connected to the output end of the power supply to be tested, receiving the second direct current output by the power supply to be tested And outputting a third direct current, and simultaneously raising the output voltage to a predetermined voltage; and a second boosting unit, The first boosting unit is coupled to receive the third direct current output by the first boosting unit, and then output a fourth direct current, and simultaneously boost the predetermined voltage to the input voltage; The second boosting unit is further connected to the input end of the power supply to be tested, and the fourth direct current is input to the power supply to be tested; and a digital signal processor is respectively associated with the first boosting unit and The second boosting unit is connected to control the first boosting unit and the second boosting unit.

In the above, in the present invention, the digital signal processor controls the first boosting unit and the second boosting unit by a pulse width modulation (Pulse Width Modulation) signal; further, in the first boosting unit And a voltage reference point and a current transmission point are further connected between the power supply to be tested, and the digital signal processor is connected to the voltage reference point and the current transmission point.

〔this invention〕

A1‧‧‧resistive load

B1‧‧‧Boost Converter

B2‧‧‧ Buck Converter

B3‧‧‧DC-AC Converter

B4‧‧‧ Output Filter

T‧‧‧Test Power Supply

11‧‧‧ Current Converter

111‧‧‧Main boost unit

112‧‧‧Main buck unit

12‧‧‧Voltage up controller

121‧‧‧First boost unit

122‧‧‧second boost unit

123‧‧‧Voltage reference point

124‧‧‧current transmission point

125‧‧‧Digital Signal Processor

13‧‧‧Microcontroller

14‧‧‧Central control unit

15‧‧‧ computer

2‧‧‧Power supply to be tested

21‧‧‧ input

22‧‧‧ Output

L1‧‧‧first inductance

S1‧‧‧ first switch

D1‧‧‧ diode

C1‧‧‧first capacitor

Tr‧‧‧Step-up transformer

L2‧‧‧Inductance

C2‧‧‧second capacitor

LS‧‧‧ output coil

LP1‧‧‧ first coil

LP2‧‧‧second coil

S2‧‧‧ second switch

S3‧‧‧ third switch

DT1‧‧‧ first diode

DT2‧‧‧Secondary

DT3‧‧‧ third diode

DT4‧‧‧ fourth diode

The first figure is a block diagram of a burn-in test system of a conventional power supply; the second figure is a block diagram of a burn-in test system having a conventional power supply of an energy recovery system; and the third figure is a power supply of the first embodiment of the present invention. Block diagram of the power energy recovery system of the supplier; the fourth diagram is a block diagram of the current converter of the present invention; 5 is an exemplary diagram of a first boosting unit of the present invention; a sixth diagram is an exemplary diagram of a second boosting unit of the present invention; and a seventh drawing is a block of a power energy recovery system of a power supply of a second embodiment of the present invention; Figure.

In order to more clearly describe the power energy recovery system of a power supply provided by the present invention, a preferred embodiment of the present invention will be described in detail below with reference to the drawings.

Please refer to the third figure, which is a block diagram of a power energy recovery system of a power supply according to a first embodiment of the present invention. First, the main components of the present invention are first introduced. As shown in the third figure, the present invention is a power supply energy recovery system for a power supply, which is connected to an AC power supply in an urban area and used to test a power supply 2 to be tested. The power energy recovery system of the power supply includes: a current converter 11 connected to the urban alternating current AC and one input end 21 of the power supply 2 to be tested to rectify the alternating current provided by the urban alternating current AC a first DC current, and an input voltage is simultaneously input to the power supply 2 to be tested, wherein the power supply 2 to be tested adjusts the first DC current to a second DC current, and An output voltage is generated; a voltage up controller 12 is respectively connected to the input terminal 21 and the output terminal 22 of the power supply 2 to be tested, and includes: a first boosting unit 121 is connected to the output end 22 of the power supply 2 to be tested, receives the second direct current output by the power supply 2 to be tested, and outputs a third direct current, and at the same time, The output voltage is raised to a predetermined voltage; and a second boosting unit 122 is coupled to the first boosting unit 121 to receive the third direct current output by the first boosting unit 121, and then output one The fourth DC current is simultaneously raised to the input voltage; in addition, the second boosting unit 122 is further connected to the input end 21 of the power supply 2 to be tested, and the fourth DC current is input into the The power supply 2 to be tested; and a digital signal processor 125 are respectively connected to the first boosting unit 121 and the second boosting unit 122 to control the first boosting unit 121 and the second boosting unit. Unit 122.

In the above, in the present invention, the digital signal processor 125 controls the first boosting unit 121 and the second boosting unit 122 by using a pulse width modulation (Pulse Width Modulation) signal; A voltage reference point 123 and a current transmission point 124 are further connected between the boosting unit 121 and the power supply 2 to be tested. The digital signal processor 125 is connected to the voltage reference point 123 and the current transmission point 124.

Please refer to the fourth figure, which is a block diagram of the current converter of the present invention. The current converter 11 of the present invention further includes: a main boosting unit 111 for receiving the alternating current provided by the urban alternating current AC. The voltage of the AC power of the AC is increased to a correction voltage, and converted to DC power, and has a power factor correction function; and a main buck unit 112 is coupled to the main boosting unit 111 and connected to the power supply to be tested. The input terminal 21 of the device 2 outputs the first direct current to the input end 21 of the power supply 2 to be tested after the correction voltage is adjusted to the input voltage; in addition, the current converter 11 can also be rectified The filtering unit is coupled together, the rectifying and filtering unit comprises a bridge circuit and a filter circuit, wherein the bridge circuit is a general bridge circuit, which is composed of four diodes for rectification, and the filtering The circuit consists of a capacitor and an inductor.

Referring to FIG. 5, it is an exemplary diagram of a first boosting unit of the present invention, wherein the first boosting unit 121 further includes a first inductor L1, a first switch S1, a diode D1, and a first a capacitor C1, wherein the diode D1 and the first capacitor C1 are connected in series, and then connected in parallel with the first switch S1, and the first inductor L1 is connected in series with the first switch S1; One embodiment of the boosting unit is implemented. However, this is only one embodiment of the first boosting unit of the present invention, and is not intended to limit the scope of the patent.

Please refer to the sixth figure, which is an exemplary diagram of the second boosting unit of the present invention, wherein the second boosting unit 122 further includes a step-up transformer Tr, a bridge circuit connected to the step-up transformer Tr, and the The bridge circuit is connected in parallel with one inductor L2 and a second capacitor C2; The voltage converter Tr includes an output coil LS, a first coil LP1, a second coil LP2 connected in parallel with the first coil LP1, a second switch S2 connected in series with the first coil LP1, and a second switch LP2 One of the third switches S3 is connected in series; the bridge circuit includes a first diode DT1, a second diode DT2, a third diode DT3, and a fourth diode DT4; One embodiment of the boosting unit is implemented. However, this is only one embodiment of the second boosting unit of the present invention, and is not intended to limit the scope of the patent.

The voltage boost controller of the present invention uses two boosting units to perform a two-stage boosting operation to improve efficiency. In general, when using a single-stage boost unit, the greater the voltage boost, the lower the efficiency. Therefore, the voltage boost controller uses two boost units to separate the voltage boosts twice to improve efficiency. The problem. Referring to the third figure again, for example, the output voltage of the power supply 2 to be tested is 12 volts, the first boosting unit 121 is raised from 12 volts to 60 volts, and then the second boosting unit 122 From 60 volts to 320 volts; 60 volts is the predetermined voltage, 320 volts is the input voltage, and the predetermined voltage, even the input voltage, can be set according to demand. It can be seen that, assuming that the input voltage is 320 volts, and the output voltage of the power supply 2 to be tested is 60 volts, rising from 60 volts to 320 volts, the degree of efficiency reduction does not affect the overall operation, only a second liter is required. Press unit 122 can be completed Working, therefore, the first boosting unit 121 can be turned off as needed.

Following the above, the voltage boosting controller of the present invention uses two boosting units to perform a two-stage boosting operation, and the second boosting unit 122 also has a function of isolation protection, in particular, the second boosting unit 122. It has a transformer inside, which separates the input from the output and functions as an electrical isolation.

In a general practice, the power supply to be tested is often more than one. In the first embodiment of the present invention, only one power supply to be tested can be tested. To this end, the inventors provide a second embodiment, which can test a plurality of simultaneously. The power supply to be tested; please refer to the seventh figure, which is a block diagram of the power energy recovery system of the power supply of the second embodiment of the present invention. In the second embodiment, the present invention tests three power supply to be tested at the same time, wherein the main components of the second embodiment are the same as the first embodiment, except that the second embodiment of the present invention is plural Each of the voltage up controllers 12 is connected to the input end 21 and an output end 22 of a power supply 2 to be tested, and each of the voltage up controllers 12 includes: The first boosting unit 121 is connected to the output end 22 of the power supply 2 to be tested, receives the second direct current output by the power supply 2 to be tested, and outputs a third direct current. The output voltage is raised to a predetermined voltage; and a second boosting unit 122 is coupled to the first boosting unit 121 to receive the output of the first boosting unit 121. a third DC current, and then outputting a fourth DC current, and simultaneously raising the predetermined voltage to the input voltage; further, the second boosting unit 122 is further connected to the input end 21 of the power supply 2 to be tested, and The fourth direct current is input to the power supply 2 to be tested.

Referring to the seventh figure, in the second embodiment of the present invention, the plurality of voltage up controllers 12 are also electrically connected to a microcontroller 13, which is a so-called microcontroller unit. The microcontroller 13 is further electrically connected to a central control device 14 having an access interface. Thus, the user can set each of the voltage up controllers 12 through the central control device 14. The voltage and current values are used to maintain optimum efficiency and control the time during which the power supply 2 to be tested is burned. The central control unit 14 is also electrically connected to a computer 15 to set the central control unit 14 through the scheduling control program of the computer 15; in use, the computer can be connected to a plurality of central control units 14, each central control unit 14 Further, a plurality of voltage up-regulation controllers 12 are connected, so that different sets of burn-in tests can be simultaneously operated at the same time according to different requirements or differences in burn-in conditions, and the automatic burn-in program is executed; the schedule control program records the complex arrays to be processed. Measure the test time, test voltage, test current and other parameters of the power supply 2, and the user can adjust according to the requirements to arrange all the tests of the power supply 2 to be tested; when the test is performed, the central control device 14 follows the The parameter output signal set by the schedule control program, The digital signal processor 125 controls the plurality of voltage up controllers 12 according to the set parameters, including the time, current and voltage of the test, and interrupts the test at a predetermined time.

The above has explained in detail the power energy recovery system of the power supply of the present invention, and it can be seen from the above that the device of the present invention can reduce heat loss during energy conversion, recover the tested power, and maintain high efficiency, so that the power utilization rate is achieved. The best condition. In addition, the apparatus of the present invention can simultaneously test a plurality of power supplies, allocate appropriate power, control appropriate time, and optimize the efficiency of the burn-in test.

The detailed description of the present invention is intended to be illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention. In the scope of patents.

11‧‧‧ Current Converter

111‧‧‧Main boost unit

112‧‧‧Main buck unit

12‧‧‧Voltage up controller

121‧‧‧First boost unit

122‧‧‧second boost unit

123‧‧‧Voltage reference point

124‧‧‧current transmission point

125‧‧‧Digital Signal Processor

2‧‧‧Power supply to be tested

21‧‧‧ input

22‧‧‧ Output

Claims (13)

An electric energy recovery system for a power supply is connected to an urban alternating current and is used for testing a power supply to be tested. The power energy recovery system of the power supply includes: a current converter connected to the urban alternating current And inputting one of the power supply to be tested to rectify the alternating current provided by the urban alternating current into a first direct current, and simultaneously generating an input voltage, and inputting to the power supply to be tested, wherein The power supply to be tested adjusts the first direct current to a second direct current and generates an output voltage; and a voltage up controller corresponding to the input end and the one of the power supply to be tested The terminal is connected, and includes: a first boosting unit connected to the output end of the power supply to be tested, receiving the second direct current output by the power supply to be tested, and then outputting a third direct current, and simultaneously outputting a third direct current And increasing the output voltage to a predetermined voltage; a second boosting unit is coupled to the first boosting unit to receive the third straight output by the first boosting unit Current, and then outputting a fourth direct current, and simultaneously raising the predetermined voltage to the input voltage; further, the second boosting unit is further connected to the input end of the power supply to be tested, and the fourth direct current is Input the power supply to be tested; and A digital signal processor is respectively connected to the first boosting unit and the second boosting unit to control the first boosting unit and the second boosting unit. The power energy recovery system of the power supply of claim 1, wherein the current converter comprises: a main boosting unit, which receives the alternating current provided by the urban alternating current, and the urban area The voltage of the alternating current is raised to a correction voltage and converted to direct current; and a main step-down unit is coupled to the main boosting unit and connected to the input end of the power supply to be tested, and the calibration voltage is adjusted After being reduced to the input voltage, the first direct current is output to the input end of the power supply to be tested. The power energy recovery system of a power supply device according to claim 1, wherein the digital signal processor controls the first boosting unit and the first by a pulse width modulation (Pulse Width Modulation) signal. Two boost unit. The power energy recovery system of the power supply device of claim 1, wherein a voltage reference point and a current transmission point are further provided between the first boosting unit and the power supply to be tested. The digit The signal processor is coupled to the voltage reference point and the current transfer point. The power energy recovery system of the power supply device of claim 1, wherein the first boosting unit further includes a first inductor, a first switch, a diode, and a first capacitor. The diode is connected in series with the first capacitor and in parallel with the first switch, and the first inductor is connected in series with the first switch. The power energy recovery system of the power supply device of claim 1, wherein the second boosting unit further comprises: a step-up transformer, a bridge circuit connected to the step-up transformer, and the bridge The circuit is connected in parallel with one of the inductors and the second capacitor; the step-up transformer includes an output coil, a first coil, a second coil in parallel with the first coil, a second switch in series with the first coil, and A third switch is connected in series with the second coil; the bridge circuit includes a first diode, a second diode, a third diode, and a fourth diode. An electric energy recovery system for a power supply is connected to an urban alternating current and is used for testing a plurality of power supply to be tested. The power supply recovery system of the power supply includes: a current converter connected to the urban area An alternating current and one of the input terminals of the power supply to be tested to exchange the alternating current provided by the urban alternating current The current is a first direct current, and an input voltage is simultaneously input to the power supply to be tested, wherein the power supply to be tested adjusts the first direct current to a second direct current, and generates An output voltage; and a plurality of voltage up-regulation controllers, each of which is connected to the input end and an output end of a power supply to be tested, and each of the voltage rise controllers includes: The first boosting unit is connected to the output end of the power supply to be tested, receives the second direct current output by the power supply to be tested, and then outputs a third direct current, and simultaneously raises the output voltage to a predetermined voltage; a second boosting unit coupled to the first boosting unit to receive the third direct current output by the first boosting unit, and then output a fourth direct current, and simultaneously The predetermined voltage is raised to the input voltage; in addition, the second boosting unit is further connected to the input end of the power supply to be tested, and the fourth direct current is input to the power supply to be tested; and a digital signal A processor connected to the plurality of lines were raised voltage controller for controlling each of a first raised voltage boosting unit boosting unit and the second within the controller. The power energy of a power supply device as described in claim 7 The source recovery system, wherein the current converter comprises: a main boosting unit, which receives the alternating current provided by the urban alternating current, and boosts the voltage of the urban alternating current to a correction voltage, and simultaneously converts into direct current; and The main step-down unit is coupled to the main boosting unit and is connected to the input end of the power supply to be tested. After the correction voltage is adjusted to the input voltage, the first direct current is output to the standby Measure the input of the power supply. The power energy recovery system of a power supply device according to claim 7, wherein the digital signal processor controls the first of the voltage up-regulation controllers by using a pulse width modulation (Pulse Width Modulation) signal. a boosting unit and the second boosting unit. The power energy recovery system of the power supply device of claim 7, wherein a voltage reference point and a current transmission point are further provided between the first boosting unit and the power supply to be tested. The digital signal processor is coupled to the voltage reference point and the current transfer point. The power energy recovery system of the power supply device of claim 7, wherein the first boosting unit further includes a first inductor, a first switch, a diode, and a first capacitor. Among them, the second The pole body is connected in series with the first capacitor and in parallel with the first switch, and the first inductor is connected in series with the first switch. The power energy recovery system of a power supply device according to claim 7, wherein the second boosting unit further comprises: a step-up transformer, a bridge circuit connected to the step-up transformer, and the bridge The circuit is connected in parallel with one of the inductors and the second capacitor; the step-up transformer includes an output coil, a first coil, a second coil in parallel with the first coil, a second switch in series with the first coil, and A third switch is connected in series with the second coil; the bridge circuit includes a first diode, a second diode, a third diode, and a fourth diode. The power energy recovery system of a power supply device according to claim 7, further comprising: a microcontroller electrically connected to the plurality of voltage up controllers; a central control device The micro-controller is electrically connected, has a human-machine interface, can set the test voltage and current value of each voltage-up controller, and the test time; and a computer is connected with the central control device and has a scheduling control program. The test voltage and current values of the complex array power supply can be recorded, as well as the test time.