CN202586364U - EPS system with bidirectional energy flow - Google Patents
EPS system with bidirectional energy flow Download PDFInfo
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- CN202586364U CN202586364U CN 201220167992 CN201220167992U CN202586364U CN 202586364 U CN202586364 U CN 202586364U CN 201220167992 CN201220167992 CN 201220167992 CN 201220167992 U CN201220167992 U CN 201220167992U CN 202586364 U CN202586364 U CN 202586364U
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Abstract
The utility model relates to an EPS system with bidirectional energy flow, which comprises a power main circuit and a control circuit, wherein the power main circuit includes a power full-bridge circuit, a DC-side voltage and current detection circuit, an AC-side voltage and current detection circuit, a power grid parameter detection circuit, and a power frequency transformer; the control circuit is a digital control system formed by taking a DSP (digital signal processor) as a core; and the control circuit is mainly composed of a voltage and current signal sampling circuit, a driving circuit, a man-machine interface circuit, a communication circuit and the like. The EPS system provided by the utility model adopts the multiplex power full-bridge circuit, is simple in hardware structure, and realizes bidirectional flow of energy. The EPS system can feed electric energy back to the power grid by grid-connection, thereby being convenient for maintenance of storage batteries.
Description
Technical field:
The utility model relates to a kind of EPS system, especially a kind of EPS system of energy two-way flow.
Background technology:
Electric power system is because the uncertainty of itself has the possibility of outage at any time.For some special devices (medicine equipment, communication equipment, emergent indicator light) or some special occasions (like railway station, square, large-scale building etc.); In case outage; Might bring massive losses or lead to serious accident, EPS has well solved this problem as stand-by power supply.
The EPS technology is growing up along with power electronic technology and computer control system; As energy storage device, under the electrical network normal condition, electrical network replenishes storage battery electric leakage itself to charge in batteries or tiny stream with storage battery; When the EPS system detects line voltage when undesired; Switch to EPS inversion power supply state, the storage battery electric energy converts industrial-frequency alternating current into through inverter, to the load emergency service.
Traditional EPS device discharges and recharges and adopts charger and two power conversion links of inverter, and hardware configuration complicacy and energy can not two-way flows, do not possess the ability of being incorporated into the power networks.
But this paper relates to energy two-way flow EPS system adopts multiplexing power full-bridge circuit, has simplified hardware configuration, has improved the utilance of element.Inverter can be operated in passive and active two states, has realized the two-way flow of energy.When line voltage just often, it is battery charge that electrical network is connected the overpower full-bridge rectification, when line voltage was undesired, storage battery was an electric through this power full-bridge passive inverter also.This system can also pass through active inversion, and electricity of accumulator is fed back to electrical network, can detect parameters such as battery capacities, maintains easily.Active inversion also is the chief component in the new energy light-emitting device such as photoelectricity, wind-powered electricity generation, and native system is formed mixed power supply system for can directly add wind generator and electrooptical device.
The utility model content:
The utility model provides a kind of new EPS system, adopts single power sharing circuit, has realized the two-way flow of energy, can be through electricity of accumulator being fed back to the parameters such as capacity of electrical network detection battery.The characteristic of energy two-way flow can feed back to electrical network with interim no electric energy, so can add new energy sources such as blower fan, solar cell, forms mixed power supply system with the EPS system.
The technical scheme that the said problem that solves the utility model adopts is:
A kind of EPS system of energy two-way flow is characterized in that: power main circuit and control circuit are arranged; Said power main circuit connects Industrial Frequency Transformer by electrical network, and Industrial Frequency Transformer connects the power full-bridge circuit, and the power full-bridge circuit connects batteries; Batteries connects the dc voltage current detection circuit, exchanges to survey the voltage and current detection circuit that connects instrument transformer; Said control circuit is the numerical control system that core is formed by dsp processor, and dsp processor connects dc voltage current detection circuit, isolated drive circuit, voltage and current detection circuit, telecommunication circuit and the keyboard of instrument transformer, demonstration man-machine interface circuit; Said dsp processor is connected with the power full-bridge circuit through isolated drive circuit, is connected with the power full-bridge circuit through AD sampling module, voltage and current detection circuit.
The MC56F8346 chip that said dsp processor chip adopts Freescale company to produce.
Said drive circuit is made up of integrated drive chips IR2130 and peripheral circuit thereof, and this chip is the special-purpose integrated drive electronics of MOSFET.
Said direct current is surveyed the mode that the electric current and voltage sample circuit adopts simply big electric resistance partial pressure, the shunting of little electric current, exchanges to survey voltage and current detection circuit, electrical network parameter testing circuit employing D.C mutual-inductor or Hall element.
Described remote communication interface adopts CAN and RS485 interface to realize.
Technique scheme adopts the method for multiplexing power circuit to be: under the mains supply normal condition, control circuit is through the SPWM rectification, converts line voltage constant current, constant voltage or the trickle direct current of the requirement of match charge in batteries into, is charge in batteries.When control system detects mains supply when undesired, control circuit control disconnect switches to storage battery inversion powering mode with system, is electric.Because of need carrying out capacity, performance etc. to battery, battery maintenance detects; Can be manually or transfer to the active inversion discharge mode automatically; The accumulators store electric energy through inverter, is converted into electrical network and is fed back to electrical network with the isobaric alternating current of frequency homophase, simultaneously; Control circuit is gathered the battery parameter, to obtain battery parameter.
The beneficial effect of the utility model is: native system adopts and discharges and recharges multiplexing power circuit, oversimplifies hardware device, has improved the reliability of system and has reduced equipment volume, has improved the utilance of element.The two-way flow of this system capacity, the backflow of electric energy can realize the regular detection to the battery parameter, maintain easily.Its active inversion function can make system convenient to increase like instability energy sources such as wind-powered electricity generation, photoelectricity, forms composite power supply system.The numerical control system that employing is made up of DSP is realized the multiplexing of power full-bridge, on the basis that does not increase hardware complexity, realizes the two-way flow of energy.
Description of drawings:
Fig. 1 is the power main circuit structure schematic block diagram of the utility model.
Fig. 2 is the system architecture diagram sketch map of the utility model.
Embodiment:
Below in conjunction with preferred embodiment, the utility model is described further.
Referring to Fig. 2, a kind of EPS system of energy two-way flow is made up of power main circuit and control circuit.The power main circuit is as shown in Figure 1, comprises power full-bridge circuit, dc voltage current detection circuit, exchanges and survey voltage and current detection circuit, electrical network parameter testing circuit, Industrial Frequency Transformer; Control circuit is the numerical control system that core is formed by dsp processor, mainly comprises voltage, current signal sample circuit, drive circuit, man-machine interface circuit, telecommunication circuit.
Said dsp processor chip adopts MC56F8346, is the core devices of control circuit, be responsible for collection and computing, the control algolithm of all signals realization, control signal generation and communicate by letter and the realization of man-machine interface.From each parameter signals of battery, power circuit DC side, power circuit AC side and electrical network through the signal adjustment circuit of forming by operational amplifier after, be connected with the AD modular converter of DSP, carry out AD and sample.The pwm signal of DSP output is connected with brachium pontis through overdrive circuit, realizes controlled function.
Said drive circuit is made up of integrated drive chips IR2130 and peripheral circuit thereof, by two brachium pontis of two chips difference driving power full-bridges.
Said direct current is surveyed the electric current and voltage sample circuit and is adopted the mode of electric resistance partial pressure, the shunting of little electric current simply greatly, exchanges to survey voltage and current detection circuit and the realization of electrical network parameter testing circuit employing D.C mutual-inductor.AC and DC side electric current and voltage detect mainly be for to energy two-way flow control, the electrical network parameter detects on the basis of electric current and voltage, also wants detection of grid phase place and frequency (through DSP calculating realization), with the realization active inversion, with the electric energy feedback grid.
Described communication interface adopts CAN and RS485 interface to realize, is responsible for communicating with host computer, through computer system is controlled and adjusts.
The above only is the preferred embodiment of the utility model, is not the structure of the utility model is done any pro forma restriction.Every technical spirit according to the utility model all still belongs to the technical scheme scope of the utility model to any simple modification, equivalent variations and modification that above embodiment did.
The EPS system of this energy two-way flow comprises power main circuit and control circuit.The power main circuit is mainly surveyed voltage and current detection circuit, electrical network parameter testing circuit, Industrial Frequency Transformer etc. by power full-bridge circuit, dc voltage current detection circuit, interchange and is formed; Said control circuit is the numerical control system that core is formed by dsp processor, mainly is made up of man-machine interface circuit such as voltage, current signal sample circuit, isolated drive circuit, telecommunication circuit and keyboard, demonstrations.Said dsp processor is connected with the power full-bridge circuit with buffer circuit through driving, is connected with the power full-bridge circuit through AD sampling module, voltage and current detection circuit.
Further; The MC56F8346 chip that said dsp processor chip adopts Freescale company to produce; Peripheral hardware is abundant on this chip slapper, has built-in AD modular converter and PWM output module, and this chip is particularly useful for the control of the power electronic equipment under the complex work environment; Said drive circuit is made up of integrated drive chips IR2130 and peripheral circuit thereof, two brachium pontis of two chip difference driving power full-bridges; Said direct current is surveyed the mode that the electric current and voltage sample circuit adopts simply big electric resistance partial pressure, the shunting of little electric current, exchanges to survey voltage and current detection circuit employing D.C mutual-inductor; Described communication interface adopts CAN and RS485 interface to realize.
Claims (5)
1. the EPS system of an energy two-way flow is characterized in that: power main circuit and control circuit are arranged; Said power main circuit connects Industrial Frequency Transformer by electrical network, and Industrial Frequency Transformer connects the power full-bridge circuit, and the power full-bridge circuit connects batteries; Batteries connects the dc voltage current detection circuit, and AC side connects the voltage and current detection circuit of instrument transformer; Said control circuit is the numerical control system that core is formed by dsp processor, and dsp processor connects dc voltage current detection circuit, isolated drive circuit, voltage and current detection circuit, telecommunication circuit and the keyboard of instrument transformer, demonstration man-machine interface circuit; Said dsp processor is connected with the power full-bridge circuit through isolated drive circuit, is connected with the power full-bridge circuit through AD sampling module, voltage and current detection circuit.
2. according to the EPS system of the described energy two-way flow of claim 1, it is characterized in that: the MC56F8346 chip that said dsp processor chip adopts Freescale company to produce.
3. the EPS system of energy two-way flow according to claim 1 is characterized in that said drive circuit is made up of integrated drive chips IR2130 and peripheral circuit thereof, and this chip is the special-purpose integrated drive electronics of MOSFET.
4. the EPS system of energy two-way flow according to claim 1; It is characterized in that: said direct current is surveyed the mode that the electric current and voltage sample circuit adopts simply big electric resistance partial pressure, the shunting of little electric current, exchanges and surveys voltage and current detection circuit, electrical network parameter testing circuit employing D.C mutual-inductor or Hall element.
5. the EPS system of energy two-way flow according to claim 1 is characterized in that: described remote communication interface adopts CAN and RS485 interface to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220167992 CN202586364U (en) | 2012-04-19 | 2012-04-19 | EPS system with bidirectional energy flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220167992 CN202586364U (en) | 2012-04-19 | 2012-04-19 | EPS system with bidirectional energy flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586364U true CN202586364U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220167992 Expired - Fee Related CN202586364U (en) | 2012-04-19 | 2012-04-19 | EPS system with bidirectional energy flow |
Country Status (1)
| Country | Link |
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| CN (1) | CN202586364U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915941A (en) * | 2014-03-18 | 2014-07-09 | 国家电网公司 | Novel power generation system |
| CN104362866A (en) * | 2014-11-10 | 2015-02-18 | 纽福克斯光电科技（上海）有限公司 | Inverter device |
| CN104426410A (en) * | 2013-08-19 | 2015-03-18 | 北京意科能源技术有限公司 | Novel dual-mode bidirectional converter device |
-
2012
- 2012-04-19 CN CN 201220167992 patent/CN202586364U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426410A (en) * | 2013-08-19 | 2015-03-18 | 北京意科能源技术有限公司 | Novel dual-mode bidirectional converter device |
| CN103915941A (en) * | 2014-03-18 | 2014-07-09 | 国家电网公司 | Novel power generation system |
| CN104362866A (en) * | 2014-11-10 | 2015-02-18 | 纽福克斯光电科技（上海）有限公司 | Inverter device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150419 |
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| EXPY | Termination of patent right or utility model |