CN104833880A - Novel multi-port new energy power generation simulation power supply device - Google Patents

Novel multi-port new energy power generation simulation power supply device Download PDF

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Publication number
CN104833880A
CN104833880A CN201510233350.7A CN201510233350A CN104833880A CN 104833880 A CN104833880 A CN 104833880A CN 201510233350 A CN201510233350 A CN 201510233350A CN 104833880 A CN104833880 A CN 104833880A
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transducer
electrochemical capacitor
bipolar transistor
insulated gate
gate bipolar
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CN201510233350.7A
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CN104833880B (en
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唐德平
曹远志
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Hefei Kewei Power System Co., Ltd
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Weir Power-Supply System Co Ltd Of Hefei Section
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Abstract

The invention relates to a novel multi-port new energy power generation simulation power supply device which comprises an AC/DC converter and a DC/DC converter which are connected in series. The DC/DC converter comprises the components of a first DC/DC converter which is used for a photovoltaic cell simulation function, a second DC/DC converter which is used for an energy storage cell simulation function, a balanced bridge circuit which is used for power exchange between the first DC/DC converter and the second DC/DC converter, and a switch element. The input end of the AC/DC converter is connected with an AC power supply, and the output end is connected with the input end of the first DC/DC converter and the input end of the second DC/DC converter. The AC/DC converter is used for simultaneously supplying a stable and reliable DC voltage to the first DC/DC converter and the second DC/DC converter. The novel multi-port new energy power generation simulation power supply device has the photovoltaic cell simulation function and the cell simulation function and furthermore has advantages of greatly reducing cost of a microgrid test platform, improving operation efficiency of the equipment and reducing land occupation area of a power supply testing device.

Description

A kind of novel multiport generation of electricity by new energy simulation power supply device
Technical field
In the present invention relates to, low-voltage direct-current system technical field of measurement and test, be specifically related to a kind of novel multiport generation of electricity by new energy simulation power supply device.
Background technology
Photovoltaic cell simulator is used to the electrical equipment of simulating photovoltaic battery panel, the solar cell piece of different manufacturers type or the electric property of solar module can be comprised with the simulation of photovoltaic simulator in field of photovoltaic power generation, as peak power, maximum current, maximum power point I-V curve etc.These parameters can not only detect the performance of transducer to a certain extent, are also related to the qualification authentication that photovoltaic converter dispatches from the factory.Therefore, a reliable photovoltaic simulator, not only contributes to photovoltaic DC-to-AC converter product development, is more related to the quality of product and the profit of manufacturer and prestige.
Battery simulator is used to the battery of simulating different parameters type, comprise lithium battery, lead-acid battery, super capacitor etc., can be used for test energy accumulation current converter (PCS) electric property, as charge-discharge electric power, battery efficiency, battery charging and discharging switching time etc.These tests not only can simulate multiple battery type (as lead-acid battery, lithium battery, sodium galvanic battery etc.), and the electrical specification also can simulating many Battery packs serial or parallel connection can.Use battery simulator to carry out the electric property of proving installation, perfect defencive function can be provided to device being tested, solve the safety problem of the tested equipment of protection and developers.
Existing photovoltaic simulator or battery simulator are all single devices, and namely device only has photovoltaic cell analog functuion or battery analog functuion.In most of the cases, device can not possess two kinds of analog functuions simultaneously, or two of single covering device kinds of functions use simultaneously.The device to test platform applied micro-capacitance sensor, the device that use two kinds is dissimilar simultaneously carrys out measurement translator equipment, can increase power conversion link, and the loss of result meeting system, reduces system effectiveness.Concerning user, if a table apparatus possesses photovoltaic battery panel simulation and battery analog functuion simultaneously, will greatly reduce the cost of test platform, improve the efficiency of equipment, reduce the floor area of testing power supply device.
Summary of the invention
The object of the present invention is to provide a kind of novel multiport generation of electricity by new energy simulation power supply device, this device possesses photovoltaic battery panel simulation and battery analog functuion simultaneously, greatly can reduce micro-capacitance sensor test platform cost, improve the work efficiency of equipment, reduce the floor area of testing power supply device.
For achieving the above object, present invention employs following technical scheme:
A kind of novel multiport generation of electricity by new energy simulation power supply device, comprises the AC/DC transducer and DC/DC transducer that are connected in series; Described DC/DC transducer comprises the DC/DC transducer for photovoltaic cell analog functuion, the 2nd DC/DC transducer for energy-storage battery analog functuion, mutually exchanges balanced bridge circuit and the on-off element of power for a DC/DC transducer and the 2nd DC/DC transducer; The input end of described AC/DC transducer is connected with AC power, output terminal is connected with the input end of a DC/DC transducer, the 2nd DC/DC transducer respectively, and AC/DC transducer is used for being the reliable and stable DC voltage of a DC/DC transducer and the 2nd DC/DC transducer simultaneously.
Described balanced bridge circuit comprises insulated gate bipolar transistor S1, insulated gate bipolar transistor S2 and inductance L 0; Described on-off element comprises the first K switch 1, second switch K2 and the 3rd K switch 3.
Described insulated gate bipolar transistor S1, its collector connects the positive input of a DC/DC transducer; Its base stage is driven by outside independent circuits; Its emitter connects the negative input of a DC/DC transducer through inductance L 0, first K switch 1, and its emitter also connects the positive input of the 2nd DC/DC transducer through inductance L 0, first K switch 1.
Described insulated gate bipolar transistor S2, its collector connects the positive input of the 2nd DC/DC transducer through inductance L 0, first K switch 1; Its base stage is driven by outside independent circuits; Its emitter connects the negative input of the 2nd DC/DC transducer.
A described DC/DC transducer, its forward exports the positive input of termination first test load, and its negative sense output terminal connects the negative input of the first test load through second switch K2; The 2nd described DC/DC transducer, its forward output terminal connects the positive input of the second test load through second switch K2, its negative sense output terminal connects the negative input of the second test load through the 3rd K switch 3.
Further, a described DC/DC transducer and the 2nd DC/DC transducer adopt in buck circuit, boost circuit, buck-boost circuit respectively any one.
Described buck circuit comprises electrochemical capacitor C1, insulated gate bipolar transistor S3, diode D1, inductance L 1 and electrochemical capacitor C2; Described insulated gate bipolar transistor S3, its base stage is driven by outside independent circuits ,its collector connects the positive pole of electrochemical capacitor C1, and its emitter connects the negative electrode of diode D1; The anode of described diode D1 connects the negative pole of electrochemical capacitor C1; The two ends of described inductance L 1 are connected with the negative electrode of diode D1, the anode of electrochemical capacitor C2 respectively; The negative pole of electrochemical capacitor C2 is connected with the anode of diode D1; The positive and negative electrode two ends of electrochemical capacitor C1 are respectively as positive input, the negative input of this buck circuit; The positive and negative electrode two ends of electrochemical capacitor C2 are respectively as positive input, the negative sense output terminal of this buck circuit.
Described boost circuit comprises electrochemical capacitor C3, inductance L 2, insulated gate bipolar transistor S4, diode D2 and electrochemical capacitor C4; The positive pole of electrochemical capacitor C3 is connected through the collector of inductance L 2 with insulated gate bipolar transistor S4, the collector of insulated gate bipolar transistor S4 is also connected with the anode of diode D2, the emitter of insulated gate bipolar transistor S4 is connected with the negative pole of electrochemical capacitor C3, C4 respectively, and insulated gate bipolar transistor S4 base stage is driven by outside independent circuits; The negative electrode of diode D2 connects the positive pole of electrochemical capacitor C4; The positive and negative electrode two ends of electrochemical capacitor C3 are respectively as positive input, the negative input of this boost circuit; The positive and negative electrode two ends of electrochemical capacitor C4 are respectively as positive input, the negative sense output terminal of this boost circuit.
Described buck-boost circuit comprises electrochemical capacitor C5, insulated gate bipolar transistor S5, inductance L 3, insulated gate bipolar transistor S6 and electrochemical capacitor C6; Described insulated gate bipolar transistor S5, its base stage is driven by outside independent circuits, and its collector connects the positive pole of electrochemical capacitor C5, and its emitter connects the collector of insulated gate bipolar transistor S6; Described insulated gate bipolar transistor S6, its base stage is driven by outside independent circuits, and its emitter connects the negative pole of electrochemical capacitor C6; Described inductance L 3, its one end is connected on the node between insulated gate bipolar transistor S5 and insulated gate bipolar transistor S6, and the other end is connected with the negative pole of electrochemical capacitor C5, the positive pole of electrochemical capacitor C6 respectively; The positive and negative electrode two ends of electrochemical capacitor C5 are respectively as positive input, the negative input of this buck-boost circuit; The positive and negative electrode two ends of electrochemical capacitor C6 are respectively as positive input, the negative sense output terminal of this buck-boost circuit.
From above technical scheme, compare with power supply simulator of the prior art, the present invention's design achieves multiport photovoltaic or battery simulator, makes same device have photovoltaic cell analog functuion and energy-storage battery analog functuion simultaneously.Photovoltaic of the present invention or battery simulating device can inner loop to power between micro-capacitance sensor, reduce system cloud gray model loss, add the economy of system.The DC/DC transducer that the present invention adopts and the 2nd DC/DC transducer have the features such as simple, the easy realization of circuit structure.In addition, different with existing chopper circuit, output end current, the voltage of simulation power supply device of the present invention are continuous, also can stable application in relatively high power occasion.In sum, this device possesses photovoltaic battery panel simulation and energy-storage battery analog functuion simultaneously, greatly can reduce micro-capacitance sensor test platform cost, improves the work efficiency of equipment, reduces the floor area of testing power supply device.
Accompanying drawing explanation
Fig. 1 is the theory diagram of multiport generation of electricity by new energy simulation power supply device of the present invention;
Fig. 2 is the circuit theory diagrams of the operation mode one of balanced bridge circuit of the present invention;
Fig. 3 is the circuit theory diagrams of the operation mode two of balanced bridge circuit in the present invention;
Fig. 4 is the circuit theory diagrams of the buck circuit that in the present invention, DC/DC transducer adopts;
Fig. 5 is the circuit theory diagrams of the boost circuit that in the present invention, DC/DC transducer adopts;
Fig. 6 is the circuit theory diagrams of the buck-boost circuit that in the present invention, DC/DC transducer adopts.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
The novel multiport generation of electricity by new energy of one as shown in Figure 1 simulation power supply device, comprises the AC/DC transducer and DC/DC transducer that are connected in series.Described DC/DC transducer comprises the DC/DC transducer for photovoltaic cell analog functuion, the 2nd DC/DC transducer for energy-storage battery analog functuion, mutually exchanges balanced bridge circuit and the on-off element of power for a DC/DC transducer and the 2nd DC/DC transducer; The input end of described AC/DC transducer is connected with AC power, output terminal is connected with the input end of a DC/DC transducer, the 2nd DC/DC transducer respectively, and AC/DC transducer is used for being the reliable and stable DC voltage of a DC/DC transducer and the 2nd DC/DC transducer simultaneously.First and second DC/DC transducers share an AC/DC transducer, and compared with using two AC/DC respectively with tradition two devices, this can not only reduce system cost and complexity, can also improve the economic benefit of device.The output terminal of the one DC/DC transducer and the 2nd DC/DC transducer is connected respectively to the first test load and the second test load.
As shown in Figures 2 and 3, IGBT module (insulated gate bipolar transistor) S1, IGBT(insulated gate bipolar transistor) S2 and inductance L 0 form bidirectional balanced bridge circuit, the function of this bidirectional balanced bridge circuit allows a DC/DC transducer and the 2nd DC/DC transducer mutually exchange power, makes power two-way flow between a DC/DC transducer and the 2nd DC/DC transducer.When IGBT module S1 conducting, when IGB module S2 turns off, forward voltage is born at inductance L 0 two ends, and in inductance L 0, electric current rises, and energy is transferred in inductance L 0 from a DC/DC transducer.When IGBT module S2 conducting, when IGBT module S1 turns off, negative voltage is born at inductance L 0 two ends, and in inductance L 0, electric current declines, and energy is discharged in the 2nd DC/DC transducer from inductance L 0.By this working method, power transfers to the 2nd DC/DC transducer from a DC/DC transducer.In like manner, when power needs to transfer to a DC/DC transducer from the 2nd DC/DC transducer, IGBT module S1 turns off, IGBT module S2 conducting, inductance L 0 bears the 2nd DC/DC transducer forward voltage, and in inductance L 0, electric current rises, and power is transferred in inductance L 0 from the 2nd DC/DC transducer.When IGBT module S1 conducting, when IGBT module S2 turns off, the 2nd DC/DC transducer negative voltage is born at inductance two ends, and in inductance L 0, electric current declines, and power is transferred to a DC/DC transducer from inductance L 0.One DC/DC transducer and the 2nd DC/DC transducer are by balanced bridge circuit bi-directional energy.The power that one DC/DC transducer absorbs is outputted in the second test load by the 2nd DC/DC transducer.Use two groups of devices to simulate photovoltaic cell respectively with tradition to compare with energy storage device, the power of simulation power supply device of the present invention feeds back to utility grid through one-level DC/AC inversion link, transform in tested equipment through two-stage AC/DC+DC/DC again, thus the loss that the system that reduces produces due to Two Stages, improve system effectiveness, add the reliability of system.The present invention is by design balance bridge circuit between a DC/DC transducer and the 2nd DC/DC transducer, make can exchange power between two DC/DC transducers, reduce the system loss of simulation power supply device of the present invention, suppress the output power degree of unbalancedness of whole simulation power supply device.
As shown in Figures 2 and 3, the present invention comprises 3 on-off elements K1, K2, K3.Wherein K1 plays the object whether balanced bridge circuit works, and when K1 closes, balanced bridge circuit participates in the operating circuit of this simulation power supply device; When K1 disconnects time, in balanced bridge circuit, L0 and main circuit disconnect, and power device S1 and S2 turns off, and it is upper just lower negative for bearing voltage, without conducting loop in balanced bridge circuit, can regard as and keep apart with main circuit.When K1, K2, K3 disconnect, a DC/DC transducer in this simulation power supply device, is only had to be in mode of operation.When K1 disconnection, K2, K3 are simultaneously closed, one DC/DC transducer and the 2nd DC/DC transducer play corresponding analog functuion simultaneously, wherein, one DC/DC transducer provides photovoltaic cell or energy-storage battery function to test load 1, and the 2nd DC/DC transducer provides battery analog functuion to test load 2.When K1, K2 disconnection, K3 close, two DC/DC transducers series connection provide analog functuion to tested load, the highest outside output power of simulation power supply device of the present invention is doubled, increases power and the capacity of single tested equipment.
As Figure 4-Figure 6, a DC/DC transducer and the 2nd DC/DC transducer can be polytype DC/DC transducers, such as buck circuit, boost circuit, buck-boost circuit or other circuit.When power supply simulation photovoltaic electricity generate function, need output power to simulate photovoltaic cell IV curve, and when voltage is lower, buck circuit as shown in Figure 4 can be adopted.When lower than output voltage time, boost circuit as shown in Figure 5 can be adopted.When output voltage both may higher than input voltage, also may lower than input voltage time, buck-boost circuit as shown in Figure 6 can be adopted.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.

Claims (5)

1. a novel multiport generation of electricity by new energy simulation power supply device, is characterized in that: comprise the AC/DC transducer and DC/DC transducer that are connected in series; Described DC/DC transducer comprises the DC/DC transducer for photovoltaic cell analog functuion, the 2nd DC/DC transducer for energy-storage battery analog functuion, mutually exchanges balanced bridge circuit and the on-off element of power for a DC/DC transducer and the 2nd DC/DC transducer; The input end of described AC/DC transducer is connected with AC power, output terminal is connected with the input end of a DC/DC transducer, the 2nd DC/DC transducer respectively, and AC/DC transducer is used for being the reliable and stable DC voltage of a DC/DC transducer and the 2nd DC/DC transducer simultaneously;
Described balanced bridge circuit comprises insulated gate bipolar transistor S1, insulated gate bipolar transistor S2 and inductance L 0; Described on-off element comprises the first K switch 1, second switch K2 and the 3rd K switch 3;
Described insulated gate bipolar transistor S1, its collector connects the positive input of a DC/DC transducer; Its emitter connects the negative input of a DC/DC transducer through inductance L 0, first K switch 1, and its emitter also connects the positive input of the 2nd DC/DC transducer through inductance L 0, first K switch 1;
Described insulated gate bipolar transistor S2, its collector connects the positive input of the 2nd DC/DC transducer through inductance L 0, first K switch 1; Its emitter connects the negative input of the 2nd DC/DC transducer;
A described DC/DC transducer, its forward exports the positive input of termination first test load, and its negative sense output terminal connects the negative input of the first test load through second switch K2; The 2nd described DC/DC transducer, its forward output terminal connects the positive input of the second test load through second switch K2, its negative sense output terminal connects the negative input of the second test load through the 3rd K switch 3.
2. one according to claim 1 novel multiport generation of electricity by new energy simulation power supply device, is characterized in that: a described DC/DC transducer and the 2nd DC/DC transducer adopt in buck circuit, boost circuit, buck-boost circuit respectively any one.
3. one according to claim 2 novel multiport generation of electricity by new energy simulation power supply device, is characterized in that: described buck circuit comprises electrochemical capacitor C1, insulated gate bipolar transistor S3, diode D1, inductance L 1 and electrochemical capacitor C2; Described insulated gate bipolar transistor S3, its collector connects the positive pole of electrochemical capacitor C1, and its emitter connects the negative electrode of diode D1; The anode of described diode D1 connects the negative pole of electrochemical capacitor C1; The two ends of described inductance L 1 are connected with the negative electrode of diode D1, the anode of electrochemical capacitor C2 respectively; The negative pole of electrochemical capacitor C2 is connected with the anode of diode D1; The positive and negative electrode two ends of electrochemical capacitor C1 are respectively as positive input, the negative input of this buck circuit; The positive and negative electrode two ends of electrochemical capacitor C2 are respectively as positive input, the negative sense output terminal of this buck circuit.
4. one according to claim 2 novel multiport generation of electricity by new energy simulation power supply device, is characterized in that: described boost circuit comprises electrochemical capacitor C3, inductance L 2, insulated gate bipolar transistor S4, diode D2 and electrochemical capacitor C4; The positive pole of electrochemical capacitor C3 is connected through the collector of inductance L 2 with insulated gate bipolar transistor S4, the collector of insulated gate bipolar transistor S4 is also connected with the anode of diode D2, the emitter of insulated gate bipolar transistor S4 is connected with the negative pole of electrochemical capacitor C3, C4 respectively, and the base stage of insulated gate bipolar transistor S4 is driven by outside independent circuits; The negative electrode of diode D2 connects the positive pole of electrochemical capacitor C4; The positive and negative electrode two ends of electrochemical capacitor C3 are respectively as positive input, the negative input of this boost circuit; The positive and negative electrode two ends of electrochemical capacitor C4 are respectively as positive input, the negative sense output terminal of this boost circuit.
5. one according to claim 2 novel multiport generation of electricity by new energy simulation power supply device, is characterized in that: described buck-boost circuit comprises electrochemical capacitor C5, insulated gate bipolar transistor S5, inductance L 3, insulated gate bipolar transistor S6 and electrochemical capacitor C6; Described insulated gate bipolar transistor S5, its base stage is driven by outside independent circuits, and its collector connects the positive pole of electrochemical capacitor C5, and its emitter connects the collector of insulated gate bipolar transistor S6; Described insulated gate bipolar transistor S6, its base stage base stage is driven by outside independent circuits, and its emitter connects the negative pole of electrochemical capacitor C6; Described inductance L 3, its one end is connected on the node between insulated gate bipolar transistor S5 and insulated gate bipolar transistor S6, and the other end is connected with the negative pole of electrochemical capacitor C5, the positive pole of electrochemical capacitor C6 respectively; The positive and negative electrode two ends of electrochemical capacitor C5 are respectively as positive input, the negative input of this buck-boost circuit; The positive and negative electrode two ends of electrochemical capacitor C6 are respectively as positive input, the negative sense output terminal of this buck-boost circuit.
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Address before: 2101, room 230088, building A, Sino Swiss building, 9 Hongfeng Road, Hefei, Anhui

Patentee before: Weir power-supply system company limited of Hefei section

Address after: 2101, room 230088, building A, Sino Swiss building, 9 Hongfeng Road, Hefei, Anhui

Patentee after: Hefei Kewei Power System Co., Ltd

Address before: 2101, room 230088, building A, Sino Swiss building, 9 Hongfeng Road, Hefei, Anhui

Patentee before: Weir power-supply system company limited of Hefei section

CP02 Change in the address of a patent holder

Address after: 230088 No.8 DALONGSHAN Road, hi tech Zone, Hefei City, Anhui Province

Patentee after: Hefei Kewei Power System Co.,Ltd.

Address before: Room 2101, block a, Zhongrui building, No.9, Hongfeng Road, hi tech Zone, Hefei City, Anhui Province

Patentee before: Hefei Kewei Power System Co.,Ltd.

CP02 Change in the address of a patent holder