CN2788208Y - Shunt-wound programmed electric load with energy feedback - Google Patents
Shunt-wound programmed electric load with energy feedback Download PDFInfo
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- CN2788208Y CN2788208Y CN 200420118195 CN200420118195U CN2788208Y CN 2788208 Y CN2788208 Y CN 2788208Y CN 200420118195 CN200420118195 CN 200420118195 CN 200420118195 U CN200420118195 U CN 200420118195U CN 2788208 Y CN2788208 Y CN 2788208Y
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Abstract
The utility model discloses a parallel program controlled electric load with energy feedback, which comprises a main power part and a control part, wherein the main power part comprises a sampling difference circuit and a main circuit, and the control part comprises two groups of amplifying circuits, a reference following circuit, a comparison circuit, a main control circuit and a driving circuit. Through the utility model, the output voltage of an aging module can return to a feeding bus of an aging system after increased. In the process, the output current of the aging module can be maintained in a constant value which is determined by an external control system.
Description
Technical field
The utility model relates to a kind of program control electric loading, and specifically, what relate to that a kind of ageing system when being used for power module and producing has an energy feedback can program control electric loading in parallel.
Background technology
In the conventional power source module ageing system, the output power of aging module often by resistance consumption, causes the waste of energy.Simultaneously, for adapting to the module of different voltages, power grade, the resistance of a large amount of different capacities of needs deposit, resistance in case of need.Resistance is worked under hot environment for a long time, and it is also very big to damage ratio.How to use a unified system, with the various power supply buses that is returned to ageing system after the rising of the output voltage of aging module; And keep in this course being made the electric energy of ageing system sufficiently and reasonably utilize in a certain value by the decision of outer control system by the output current of aging module is constant, become a new problem.And owing to be used in ageing system, work under bad environment is so EMI and working temperature are had relatively high expectations.
The utility model content
The utility model technical issues that need to address just are to overcome the defective of energy dissipation in the prior art, provide a kind of have the energy feedback can be in parallel program control electric loading, be returned to the power supply buses of ageing system after it can be raise by the output voltage of aging module; And keep constant in a certain value in this course by the decision of outer control system by the output current of aging module.
For addressing the above problem, the utility model adopts following technical scheme:
The utlity model has the energy feedback can be in parallel program control electric loading, it comprises main power section and control section, wherein:
Main power section comprises: current sampling difference channel, main circuit.
Control section comprises: two groups of amplifying circuits, benchmark follow circuit, comparator circuit, main control circuit, driving circuit.
Current sampling difference channel described in the utility model is by sample resistance and differential amplifier circuit, input current is taken a sample into a voltage signal, signal voltage is directly proportional with sampled electric current, this voltage signal offers next two groups of amplifying circuits, it needs the external world to provide one group of generating positive and negative voltage to power to amplifier, and the benchmark ground of this group generating positive and negative voltage is different with other auxiliary power supplies;
Described main circuit is the BOOST circuit topography, and input voltage is raise, and this BOOST circuit itself does not have the feedback regulation function, need receive output terminal on the power supply buses of ageing system, and the maintenance output voltage is a busbar voltage;
Described two groups of amplifying circuits are meant that the current signal of current sampling difference channel extraction is input in the amplifying circuit that two accurate amplifiers of usefulness take, and the output of an amplifying circuit directly outputs on the auxiliary needle, for outer control system monitoring electric current; The output of another amplifying circuit offers the next stage amplifier and does input; Owing to all take with accurate amplifier, strict to power requirement, need provide+power supply of 5V and-1--2V;
Described benchmark follow circuit is meant that doing one-level with amplifier follows, and then offers the next stage amplifier and current signal compares, needs+12V and-power supply of 5V;
Described comparator circuit is meant the current sampling signal after the process amplification and the reference voltage after following processing compares, and the result offers main control circuit;
Described main control circuit is one 3843 chip and peripheral circuit thereof, the output result of comparator circuit is supplied to 3843 COMP pin, the effect of this pin is: in the perform region, the PWM pulsewidth of the high more output of COMP pin voltage is just big more, 3843 electric current loop does not use, and for making its operate as normal, directly gives electric current loop from triangular wave of concussion frequency setting circuit simulation, the FB pin of Voltage Feedback does not use, and uses resistance eutral grounding.This needs a 12V to supply outward;
Described driving circuit is that the output of PWM is controlled the work of main BOOST by driving circuit, and energy being transferred back to aging bus, the reference voltage that outer control system gives is high more, and then the input current of electric loading will be transferred greatly more;
Main power section described in the utility model also comprises filtering and the main circuit output filtering between input filtering, the main circuit.
Control section described in the utility model also comprises output over-voltage protection circuit and auxiliary power supply; Wherein:
Described output over-voltage protection circuit is for preventing that exporting virtual connection damages electric loading, add overvoltage protection at output terminal that by a voltage sampling light lotus root isolation output overvoltage signal being become cut-off signals provides back main control circuit.
Described auxiliary power supply is a little DC/DC transducer, from connecting an end power taking of aging bus, uses for control system as power supply.The Vcc that difference channel needs is unusual, needs a pair of generating positive and negative voltage of supply and benchmark ground separately.
Electric loading described in the utility model also comprises other six roots of sensation function pin: one is used for the output current detection signal; One is used for input reference voltage, and two is the ground of main PWM, uses altogether for outer control circuit; Two positive and negative power supplies comparator circuit offer outer control circuit and use.
The single feedback system of the utility model along with control reference voltage difference, can be worked under input current 3-20A.As 20-36V, wearing out of the module of the output of 15-20A to the power module of low pressure output, can be exported series system with multimode and improve voltage, approximately the energy of 70-80% can be fed back on the aging bus of 60V.If a plurality of feedback system parallel runnings can be used for the power module of aging bigger output current.
Description of drawings
Fig. 1 is the utility model structured flowchart.
Fig. 2 is the utility model circuit diagram.
Embodiment
As shown in Figure 1, the utility model circuit is divided into several main functional parts:
One: main power section
1, input filtering: the filtering before current sampling prevents to import the interference of power supply to current sampling.The ripple that the work that also prevents simultaneously produces is counter irritate disturb the input power supply (to and connection work influential).
2, current sampling difference channel: by sample resistance and differential amplifier circuit, input current is taken a sample into a voltage signal, signal voltage is directly proportional with sampled electric current, and this voltage signal offers next two groups of amplifying circuits.With the differential sample mode is influencing each other for the electric current that prevents a plurality of feedback systems and connect.This part needs the external world to power to amplifier for one group of generating positive and negative voltage, and benchmark ground of this group generating positive and negative voltage is different with other auxiliary power supplies.
3, filtering: between sample circuit and main operating circuit filtering will be arranged, the ripple that main operating circuit is produced filters, and makes it not influence sample circuit.
4, main circuit: BOOST circuit topography.Input voltage is raise.Because output does not have voltage stabilizing function, so need receive output terminal on the power supply buses of ageing system, the maintenance output voltage is a busbar voltage.
5, filtering: output filtering
Two: control section
6, two groups of amplifying circuits: the current signal of current sampling difference channel extraction is input in the amplifying circuit that two accurate amplifiers of usefulness take.The output of an amplifying circuit directly outputs on the auxiliary needle, for outer control system monitoring electric current; The output of another amplifying circuit offers the next stage amplifier and does input.Since all take with accurate amplifier, strict to power requirement.Need provide+5V and-power supply of 1--2V.
7, benchmark follow circuit: the reference voltage that controlling circuit outward provides may not have much energy, follows so do one-level with amplifier, and then offers the next stage amplifier and current signal compares.Needs+12V and-power supply of 5V.
8, comparator circuit: relatively the reference voltage after passing through the current sampling signal after amplifying and following processing.The result offers main control circuit.
9, main control circuit: be one 3843 chip and peripheral circuit thereof.The output result of comparator circuit is supplied to 3843 COMP pin, and the effect of this pin is: in the perform region, the PWM pulsewidth of the high more output of COMP pin voltage is just big more.3843 electric current loop does not use, and for making its operate as normal, directly gives electric current loop from triangular wave of concussion frequency setting circuit simulation.The FB pin of Voltage Feedback does not use, and uses resistance eutral grounding.This needs a 12V to supply outward.
10, the output of driving circuit: PWM is controlled the work of main BOOST by driving circuit, energy is transferred back to aging bus.So, the reference voltage that outer control system gives is high more, and then the input current of electric loading will be transferred greatly more.
11, output over-voltage protection circuit: because output does not have voltage stabilizing function, so need receive output terminal on the power supply buses of ageing system, sustaining voltage is a busbar voltage.For preventing that exporting virtual connection damages electric loading, adds overvoltage protection at output terminal.By a light lotus root isolation output overvoltage signal is become cut-off signals behind the voltage sampling main control circuit is provided back.
12, auxiliary power supply: actual is a little DC/DC transducer.From connecting an end power taking of aging bus, use for control system as power supply.The Vcc that difference channel needs is unusual, needs a pair of generating positive and negative voltage of supply and benchmark ground separately.Main PWM, driving circuit, reference voltage follow with comparator circuit need with a pair of generating positive and negative voltage (+12 ,-5V); The voltage that the amplifying circuit that two accurate amplifiers of usefulness are taken requires is lower, thus from the power supply of comparator circuit with linear voltage stabilization branch away in addition (+5V and-1--2V).
Except that main power input and output, other has six roots of sensation function pin: one is used for the output current detection signal; One is used for input reference voltage, and two is the ground of main PWM, uses altogether for outer control circuit; Two positive and negative power supplies comparator circuit offer outer control circuit and use.
Circuit theory diagrams of the present utility model as shown in Figure 2.
Claims (4)
1, a kind of have the energy feedback can be in parallel program control electric loading, comprise current sampling difference channel, BOOST circuit, amplifying circuit, benchmark follow circuit, comparator circuit, control circuit and driving circuit; It is characterized in that: it comprises main power section and control section, wherein:
Main power section comprises: current sampling difference channel, main circuit;
Current sampling difference channel input end links to each other with sample resistance, and output terminal links to each other with the input end of two groups of amplifying circuits and main circuit respectively, provides independently power supply by auxiliary power supply DC/DC transducer for the current sampling difference channel; Main circuit is the BOOST circuit topography, and its output terminal links to each other with the power supply buses of ageing system, and the maintenance output voltage is a busbar voltage;
Control section comprises: two groups of amplifying circuits, benchmark follow circuit, comparator circuit, main control circuit, driving circuit;
Two groups of amplifying circuits are to form by precision operational-amplifier, and the output of an amplifying circuit directly links to each other with auxiliary needle; The output of another amplifying circuit links to each other with the input end of next stage amplifier; The input of the power supply of two groups of amplifying circuits is respectively+5V and-the 1--2V direct supply;
The benchmark follow circuit is done one-level with a discharge circuit and is followed, and then with output terminal and next stage amplifier one relatively end link to each other, the power supply input of this circuit is respectively+12V and-5V direct supply;
Main control circuit comprises a slice 3843 chips and peripheral circuit thereof, the COMP pin of 3843 chips links to each other with the input end of pwm circuit, and the electric current loop of 3843 chips links to each other with concussion frequency setting circuit analog output, and the FB pin of Voltage Feedback does not use, use resistance eutral grounding, the power supply input is the 12V direct supply;
The output of main control circuit links to each other with the input of pwm circuit, and the output of pwm circuit links to each other with the control end of main BOOST by driving circuit; The output of main BOOST links to each other with the power supply buses of ageing system, detects by output voltage again simultaneously to link to each other with pwm circuit.
2, as claimed in claim 1 have the energy feedback can be in parallel program control electric loading, it is characterized in that: the input end of described current sampling difference channel links to each other with input filter circuit; Link to each other by filtering circuit between current sampling difference channel and the main circuit; The main circuit output terminal links to each other with the power supply buses of ageing system by output filter circuit.
3, as claim 1 or 2 arbitrary described have an energy feedback can program control electric loading in parallel, it is characterized in that: described control section also comprises output over-voltage protection circuit and auxiliary power supply circuit, wherein:
Output voltage detecting circuit and optically-coupled control device constitute the output over-voltage protection circuit between main circuit and the pwm circuit by being connected across;
The auxiliary power supply circuit is a little DC/DC transducer, and input end links to each other with the power supply buses of ageing system, and output terminal links to each other with the power input of control system and difference channel.
4, as claimed in claim 3 have the energy feedback can be in parallel program control electric loading, it is characterized in that: described electric loading also comprises other six roots of sensation function pin: one is connected on the current detection signal, one is connected on the input reference voltage, two power supply ground with main circuit and pwm circuit link to each other, and two link to each other with the positive and negative supply lines of comparator circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118195 CN2788208Y (en) | 2004-12-03 | 2004-12-03 | Shunt-wound programmed electric load with energy feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118195 CN2788208Y (en) | 2004-12-03 | 2004-12-03 | Shunt-wound programmed electric load with energy feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2788208Y true CN2788208Y (en) | 2006-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118195 Expired - Lifetime CN2788208Y (en) | 2004-12-03 | 2004-12-03 | Shunt-wound programmed electric load with energy feedback |
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| CN (1) | CN2788208Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902042A (en) * | 2010-06-11 | 2010-12-01 | 刘青峰 | Implementation scheme of load feedback system of DC current source |
| CN101290335B (en) * | 2008-06-11 | 2011-02-09 | 德州三和电器有限公司 | Direct-current input power supplying converter energy-saving aging device |
| CN106546930A (en) * | 2016-08-23 | 2017-03-29 | 四川莱福德科技有限公司 | For the high-adaptability load simulation method and system of DC source |
| CN113054647A (en) * | 2021-05-06 | 2021-06-29 | 杭州中安电子有限公司 | Energy recovery device of DC/DC module |
-
2004
- 2004-12-03 CN CN 200420118195 patent/CN2788208Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290335B (en) * | 2008-06-11 | 2011-02-09 | 德州三和电器有限公司 | Direct-current input power supplying converter energy-saving aging device |
| CN101902042A (en) * | 2010-06-11 | 2010-12-01 | 刘青峰 | Implementation scheme of load feedback system of DC current source |
| CN106546930A (en) * | 2016-08-23 | 2017-03-29 | 四川莱福德科技有限公司 | For the high-adaptability load simulation method and system of DC source |
| CN113054647A (en) * | 2021-05-06 | 2021-06-29 | 杭州中安电子有限公司 | Energy recovery device of DC/DC module |
| CN113054647B (en) * | 2021-05-06 | 2022-08-05 | 杭州中安电子有限公司 | Energy recovery device of DC/DC module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING SUPLET CO., LTD. Free format text: FORMER NAME: BEIJING XINLEINENG CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 102200, room 285, block B, No. 9, front road, Changping District science and Technology Park, Beijing Patentee after: Beijing Suplet Co., Ltd. Address before: Beijing City, Xisanqi road 100096 Patentee before: Beijing Xinleineng Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141203 Granted publication date: 20060614 |