CN104659787A - Method and system for aging constant current power supply and detection system - Google Patents
Method and system for aging constant current power supply and detection system Download PDFInfo
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- CN104659787A CN104659787A CN201510055533.4A CN201510055533A CN104659787A CN 104659787 A CN104659787 A CN 104659787A CN 201510055533 A CN201510055533 A CN 201510055533A CN 104659787 A CN104659787 A CN 104659787A
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- aging
- boosting unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- Power Engineering (AREA)
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- General Physics & Mathematics (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to a method for aging a constant current power supply. The method comprises the following steps: I, connecting input ends of a plurality of aged power supplies to a grid; II, after respectively connecting the outputs of the aged power supplies to diodes in series, connecting to a DC-DC boosting unit in parallel, wherein the DC-DC boosting unit converts low voltage direct current output by the aged power supplies into high voltage direct current and controlling the input voltages of the DC-DC boosting unit; III, connecting the output of the DC-DC boosting unit to a DC-AC inverter, and connecting the output of the DA-AC inverter to the grid, wherein the DC-AC inverter converts the high voltage direct current converted and output by the DC-DC boosting unit in the step II into the alternating current and feeding back to the grid. According to the aging method provided by the invention, as the power consumption of the diode is little, the electric energy can be obviously saved in the process of aging low power constant current power supplies by way of connecting the outputs of the aged power supplies to a total DC-DC boosting unit through a diode, so that the using cost of the aging system is lowered.
Description
Technical field
The present invention relates to a kind of aging method for aging constant-current supply, ageing system, and the detection system of power source aging.
Background technology
Manufacturing the power supply manufacturing enterprise of the power supplys such as such as adapter, charger, Switching Power Supply, LED drive power, for choosing bad power supply, usually needing carry out aging to finished product power supply and detect.Traditional aging method utilizes high-power resistance as load, therefore there is the shortcoming that large, the aging cost of power consumption is high.
The patent No. is ZL200710099161.0, patent name is the patent of multiple input path modular high frequency isolation single phase power feedback type electronic load, disclose and be a kind ofly applicable to the aging method of constant-current supply, this aging method is aging power supply output is separately linked into a DC-DC high-frequency isolation module respectively by some, then the output-parallel of each DC-DC high-frequency isolation module is linked into a DC-AC inverter, finally by the output of this DC-AC inverter access electrical network, with this while aging power supply, recycling of electric energy can also be realized, reach saves energy, reduce the object of aging cost.But this aging method is when small-power constant-current supply this kind of for aging such as LED drive power, and little owing to being aging power supply own power, the energy-saving effect of this aging method is very not obvious, and aging cost does not effectively reduce.
Summary of the invention
The first object of the present invention is to provide and is a kind ofly especially applicable to the aging aging method of small-power constant-current supply and ageing system for constant-current supply, makes it have the feature that obvious, the aging cost of energy-saving effect is low.
The second object of the present invention provides a kind of energy-conservation constant-current supply ageing management system further.
For achieving the above object, the present invention takes following technical scheme:
Implement a kind of method that constant-current supply is aging, the method comprises the following steps:
One, some inputs being aging power supply are connected electrical network;
Two, parallel connection after described some output being aging power supply respectively series diode is linked into a DC-DC boosting unit, the described low-voltage DC being aging power supply output is converted to high voltage direct current by this DC-DC boosting unit, and controls the size of the input voltage of this DC-DC boosting unit;
Three, the output of described DC-DC boosting unit is linked into a DC-AC inverter, the output of described DC-AC inverter is linked into electrical network; The high voltage direct current exported by the conversion of DC-DC boosting unit in step 2 is converted to alternating current and feeds back to electrical network by this DC-AC inverter, and controls the size feeding back to the electric current of electrical network.
In above-mentioned steps two, described diode connects in the mode of common anode pole or common cathode.
According to above-mentioned aging method, design the system that a kind of constant-current supply is aging, this system comprises:
Somely be aging power supply, the input of this power supply connects electrical network;
One DC-DC boosting unit, described some outputs being aging power supply are connected in parallel the input of this DC-DC boosting unit respectively after series diode;
One DC-AC inverter, the input of this inverter connects the output of described DC-DC boosting unit, and the output of this inverter connects electrical network.
Particularly, described some diodes being aging power output end and being connected in series respectively, for the connected mode of common anode pole or common cathode.
For choosing aging defective products, based on above-mentioned ageing system, provide the detection system that a kind of constant-current supply is aging, this system comprises above-mentioned ageing system and for detecting the detecting unit being respectively aging electric power output voltage value and/or current value.
Further, being respectively aging the qualification of the constant current output of power supply for detecting, in described ageing system, being somely aging between the output negative terminal of power supply and the input negative terminal of DC-DC boosting unit, being connected in series current sampling resistor respectively.
Aging method of the present invention, adopt the output being aging power supply after diode, receive the mode of a total DC-DC boosting unit, because the power consumption of diode is little, in the process that small-power constant-current supply is aging, can saves energy significantly, thus reduce the use cost of ageing system of the present invention; Be aging the diode arranged in power supply shunt circuit separately, can also protect aging after the power supply that breaks down can not cause the further infringement of other parallel connection power supplies, thus avoid the extension of fault; In addition, because the constant-current supply be aging itself only controls its electric current exported, and do not control output voltage, its output voltage is determined by its load, so an available total DC-DC boosting unit controls the size of its input voltage, to make the constant-current supply of the applicable different capacity of ageing system of the present invention, and remove to control without the need to multiple DC-DC high-frequency isolation module the output voltage that each is aging power supply respectively, like this, the construction cost of ageing system can significantly be reduced again.Therefore, aging method of the present invention and ageing system, have good energy-conserving effect, feature that aging cost is low.
Ageing management system of the present invention, designs further based on ageing system of the present invention, therefore also has good energy-saving effect, and can independent detection each be aging output voltage, the electric current of power supply, to choose aging defective products.
Accompanying drawing explanation
Fig. 1 is the structural principle block diagram of the method and system that a kind of constant-current supply of the present invention is aging;
Fig. 2 is the another kind of structural principle block diagram of the method and system that a kind of constant-current supply of the present invention is aging;
Fig. 3 is the structural principle block diagram of the detection system that a kind of constant-current supply of the present invention is aging;
Fig. 4 is the another kind of structural principle block diagram of the detection system that a kind of constant-current supply of the present invention is aging;
Fig. 5 is the circuit diagram of DC-DC boosting unit in the present invention;
Fig. 6 is the circuit diagram of DC-AC inverter in the present invention;
Fig. 7 is the block diagram relating to DSP control method in the present invention.
In figure, each label respectively: (10) are aging power supply, (20) DC-DC boosting unit, (21) boost circuit, (22) full-bridge circuit, (30) DC-AC inverter, (40) detecting unit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Referring to Fig. 1, the method that a kind of constant-current supply of the present invention is aging, comprises the following steps:
One, the input three being aging power supply 10 connects electrical network;
Two, the output three being aging power supply 10 respectively after series diode D1, diode D2, diode D3 parallel connection be linked into a DC-DC boosting unit 20, this DC-DC boosting unit 20 is aging the DC bus-bar voltage Vbus that low-voltage DC that power supply 10 exports is converted to voltage 385 volts by three, and the size of the input voltage vin of control DC-DC boosting unit 20, with the constant-current supply making this aging method can be used for aging different capacity; And the power supply broken down after diode D1, diode D2, diode D3 protection can be utilized aging can not cause the further infringement of other parallel connection power supplies, thus avoid the extension of fault;
Three, the 385 volts of DC bus-bar voltage Vbus exported by DC-DC boosting unit 20 are linked into a DC-AC inverter 30, and the output of this DC-AC inverter 30 is linked into electrical network; The 385 volts of DC bus-bar voltage Vbus changing output by DC-DC boosting unit 20 in step 2 are converted to current waveform and electrical network and feed back to electrical network with the alternating current of homophase frequently by this DC-AC inverter 30, and control the size feeding back to the electric current of electrical network, ageing system input power and power output are balanced each other.
The system that a kind of constant-current supply of the present invention is aging, the first execution mode comprises:
Three are aging power supply 10, and its input connects electrical network;
The output that DC-DC boosting unit 20, three is aging power supply 10 is connected in parallel the input of this boosting unit 20 respectively after series diode D1, diode D2, diode D3; Diode D1, diode D2, diode D3 are the connected mode of common cathode;
A DC-AC inverter 30, the input of this inverter 30 connects the output of DC-DC boosting unit 20, and the output of this inverter 30 connects electrical network.
Referring to Fig. 2, the system that a kind of constant-current supply of the present invention is aging, the second execution mode is from the different of the first execution mode: diode D1, diode D2, diode D3, is the connected mode of common anode pole.
Referring to Fig. 3, the detection system that a kind of constant-current supply of the present invention is aging, the first execution mode comprise above-mentioned first execution mode ageing system and for detecting the detecting unit 40 being respectively aging power supply 10 output voltage values, the bad power supply after being aging can be detected.
Referring to Fig. 4, the detection system that a kind of constant-current supply of the present invention is aging, second execution mode is on the basis of the first execution mode, be aging between the output negative terminal of power supply 10 and the input negative terminal of DC-DC boosting unit 20 at three, be connected in series current sampling resistor R1, current sampling resistor R2, current sampling resistor R3 respectively, magnitude of voltage and the current value that three are aging the respective output of power supply 10 is measured by detecting unit 40, whether normal to check three constant current values being aging power supply 10 output.
Referring to Fig. 5, in the present invention, DC-DC boosting unit 20 is made up of two power electronic translation circuits, and L1, Q1, D1, C1 form boost circuit 21, Q2, Q3, Q4, Q5, C2, T1, D2, D3, D4, D5, C3 form full-bridge circuit 22.Boost circuit 21 is converted to 75 volts of direct currents by being aging the low-voltage DC that power supply 10 exports, and drives the size of the input voltage vin of control DC-DC boosting unit 20 by the PWM of control Q1, namely controls the power output being aging power supply 10.75 volts of direct currents that boost circuit 21 exports by full-bridge circuit 22 are converted to 385 volts of direct current supply DC-AC inverters 30.
Referring to Fig. 6, in the present invention, DC-AC inverter 30 adopts full bridge inverter, Q5, Q6, Q7, Q8 alternate conduction, be alternating current by DC inverter, the drive singal of Q5, Q6, Q7, Q8 comes from DSP control circuit, the size of DSP control circuit detection of grid voltage, frequency and phase place and grid-connected current Ie, bus voltage value, produce SPWM (Sine Wave Pulse Width Modulation) drive singal according to these values, grid-connected current and line voltage are with frequency homophase to drive 4 IGBTQ5, Q6, Q7, Q8 to ensure.DSP control circuit is also responsible in addition and system host computer carries out communication with what obtain input voltage vin and arranges instruction.Inductance L 3 is used for the ripple current of filtering switching frequency, and K1 is used for inverter circuit and electrical network to separate, when line voltage or frequency abnormal time disconnect K1, to protect inverter 30 internal circuit.
When ageing system power is larger, DC-AC inverter 30 also can adopt three phase full bridge rectification/inverter circuit.
Referring to Fig. 7, the DSP control circuit related in the present invention, realizes the balance of system input power and feedback grid power by control ring.Control ring comprises an outer shroud and an inner ring.
Outer shroud is 385 volts of busbar voltage rings, ensures that system input power and power output match by keeping the stable of busbar voltage.The difference of busbar voltage actual value and value of feedback obtains the given of grid-connected current amplitude after pi regulator.When input power specific power output is large, then busbar voltage can increase, and at this moment, increase grid-connected current, then busbar voltage can reduce.Equally, when input power specific power output is little, then busbar voltage can reduce, and at this moment, reduce grid-connected current, then busbar voltage can raise.After busbar voltage is stable, system input power is and power output has matched.
Inner ring is grid-connected current ring, this environmental protection card grid-connected current and line voltage are with frequency homophase, the grid-connected current amplitude signal that busbar voltage ring exports is multiplied with the sinusoidal signal that civil power phase-locked loop exports, namely obtain the instantaneous set-point of grid-connected current, the drive singal that the difference of this value and grid-connected current actual value obtains adjustable pulse width after adjuster removes driving 4 IGBTQ5, Q6, Q7, Q8.
Claims (6)
1. the method that constant-current supply is aging, is characterized in that: comprise the following steps:
One, some inputs being aging power supply (10) are connected electrical network;
Two, parallel connection after described some output being aging power supply (10) respectively series diode is linked into a DC-DC boosting unit (20), this DC-DC boosting unit (20) is aging the low-voltage DC that power supply (10) exports is converted to high voltage direct current by described, and controls the size of the input voltage of this DC-DC boosting unit (20);
Three, the output of described DC-DC boosting unit (20) is linked into a DC-AC inverter (30), the output of described DC-AC inverter (30) is linked into electrical network; The high voltage direct current exported by DC-DC boosting unit (20) conversion in step 2 is converted to alternating current and feeds back to electrical network by this DC-AC inverter (30), and controls the size feeding back to the electric current of electrical network.
2. the method that constant-current supply according to claim 1 is aging, is characterized in that: in described step 2, and described diode connects in the mode of common anode pole or common cathode.
3. the system that constant-current supply is aging, is characterized in that: comprising:
Somely be aging power supply (10), the input of this power supply (10) connects electrical network;
One DC-DC boosting unit (20), described some outputs being aging power supply (10) are connected in parallel the input of this DC-DC boosting unit (20) respectively after series diode;
One DC-AC inverter (30), the input of this inverter (30) connects the output of described DC-DC boosting unit (20), and the output of this inverter (30) connects electrical network.
4. the system that constant-current supply according to claim 3 is aging, is characterized in that: described some diodes being aging power supply (10) output and being connected in series respectively, is the connected mode of common anode pole or common cathode.
5. the detection system that constant-current supply is aging, is characterized in that: comprise the aging system of constant-current supply according to claim 3 and be respectively aging the detecting unit (40) of power supply (10) output voltage values and/or current value for detecting.
6. the detection system that constant-current supply according to claim 5 is aging, it is characterized in that: in the system that constant-current supply according to claim 3 is aging, somely to be aging between the output negative terminal of power supply (10) and the input negative terminal of DC-DC boosting unit (20), to be connected in series current sampling resistor respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510055533.4A CN104659787A (en) | 2015-02-03 | 2015-02-03 | Method and system for aging constant current power supply and detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510055533.4A CN104659787A (en) | 2015-02-03 | 2015-02-03 | Method and system for aging constant current power supply and detection system |
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| CN104659787A true CN104659787A (en) | 2015-05-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546925A (en) * | 2016-10-11 | 2017-03-29 | 珠海思齐电动汽车设备有限公司 | The ageing system and method for batteries of electric automobile group |
| WO2017211048A1 (en) * | 2016-06-07 | 2017-12-14 | 东莞市冠佳电子设备有限公司 | Aging test circuit of switch power source |
| CN110726949A (en) * | 2019-10-30 | 2020-01-24 | 上能电气股份有限公司 | Aging test circuit and method for string type photovoltaic inverter |
| CN111431255A (en) * | 2020-03-23 | 2020-07-17 | 广西玉林浩杰新能源科技有限公司 | Energy-saving charger aging system |
| CN115700392A (en) * | 2022-10-28 | 2023-02-07 | 深圳市恒运昌真空技术有限公司 | Power supply aging test circuit and method |
-
2015
- 2015-02-03 CN CN201510055533.4A patent/CN104659787A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211048A1 (en) * | 2016-06-07 | 2017-12-14 | 东莞市冠佳电子设备有限公司 | Aging test circuit of switch power source |
| CN106546925A (en) * | 2016-10-11 | 2017-03-29 | 珠海思齐电动汽车设备有限公司 | The ageing system and method for batteries of electric automobile group |
| CN110726949A (en) * | 2019-10-30 | 2020-01-24 | 上能电气股份有限公司 | Aging test circuit and method for string type photovoltaic inverter |
| CN110726949B (en) * | 2019-10-30 | 2022-10-11 | 上能电气股份有限公司 | Aging test circuit and method for string type photovoltaic inverter |
| CN111431255A (en) * | 2020-03-23 | 2020-07-17 | 广西玉林浩杰新能源科技有限公司 | Energy-saving charger aging system |
| CN115700392A (en) * | 2022-10-28 | 2023-02-07 | 深圳市恒运昌真空技术有限公司 | Power supply aging test circuit and method |
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Application publication date: 20150527 |