CN103455079A - Digital voltage-sharing method of voltage sources - Google Patents
Digital voltage-sharing method of voltage sources Download PDFInfo
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- CN103455079A CN103455079A CN2013104082608A CN201310408260A CN103455079A CN 103455079 A CN103455079 A CN 103455079A CN 2013104082608 A CN2013104082608 A CN 2013104082608A CN 201310408260 A CN201310408260 A CN 201310408260A CN 103455079 A CN103455079 A CN 103455079A
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Abstract
The embodiment of the invention provides a digital voltage-sharing method of voltage sources, comprising the steps of receiving a current voltage value of each voltage source, sent by a series voltage source in a multicast way; generating average voltage of all voltage sources according to the received current voltage value of the series voltage source and the voltage values of the voltage sources; integrating the output voltage of the voltage sources according to the average voltage, and integrating the output voltage values of the voltage sources into the average voltage. According to the method, the multicast way is adopted, each voltage source controls the voltage in a self-operated way, the status of each voltage source is the same, and the risk problem of voltage-sharing control breakdown is effectively solved by using the method.
Description
Technical field
The present invention is about power technique fields, especially in regard to a kind of digital method for equalizing voltage of voltage source.
Background technology
In the communication power supply field, adopt a plurality of voltage sources to connect to realize that high-power output is a very important technology, the advantages such as centralized management, easily dilatation, the compatibility that the power supply series connection has power supply is good, redundancy backup, reliability is high, cost performance is high.The power supply serial connection technology has become the core technology of high-power distributed power supply system, and realizes that the core of power supply series operation is exactly technology of pressure equalization.Technology of pressure equalization, refer to that the measure of each voltage source voltage of uniform distribution, require each module can bear the self-equilibrating of voltage in the system of n voltage source series connection, when input voltage and change in voltage, keep output voltage stabilization simultaneously, and all press precision and transient response good.
Along with the evolution of power-supply system towards the digitizing direction, highly integrated, be easy to the main pressure of transplanting, intelligentized digital power system will become whole power-supply system, at least there is following shortcoming in prior art: existing digital technology of pressure equalization must could be realized by additional even pressure controller, belong to passive type and all press mode, once outside even pressure controller breaks down, whole Pressure and Control all will be collapsed, and to the operation of system, will produce serious influence.
Summary of the invention
The embodiment of the present invention provides a kind of digital method for equalizing voltage, voltage source and communication apparatus of voltage source, to solve the unstable and higher failure risk problem of system that the existing numeral scheme of all pressing too relies on even pressure controller and caused.
The embodiment of the present invention provides a kind of digital method for equalizing voltage of voltage source, and described method comprises: the current magnitude of voltage that receives each voltage source that a plurality of series electrical potential sources send by multicast; According to the current magnitude of voltage of the described a plurality of series electrical potential sources that receive and the current magnitude of voltage of self, generate the equal threshold voltage of all voltage sources; According to described equal threshold voltage, the output voltage of self is integrated, made the output voltage values of self be integrated into described equal threshold voltage.
The development of digitizing power supply has at present become the new development trend of industry, in the large capacity power source system be composed in series by the digitizing power module, Pressure and Control between its each voltage source also should realize Digital Control, the power-supply system of the embodiment of the present invention provides a feasible numeral all to press solution, and can obtain following useful technique effect:
1, current numeral all the pressure scheme need additional even pressure controller could realize, once so just bring the even pressure controller fault, the risk that whole balanced pressure system collapses.This programme proposes the Pressure and Control function is integrated in each voltage source and goes, and is calculated respectively all pressures of initiatively going to realize this module by each voltage source.
2, system architecture is simple, and reliability is high, little to the degree of dependence of device.
3, portable good, all can transplant utilization aspect the Pressure and Control of MC/DC transformation system, DC/DC transformation system, inverter system.
The accompanying drawing explanation
Fig. 1 is method for equalizing voltage process flow diagram of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making resulting every other embodiment under the creative work prerequisite, belong to the scope of protection of the invention.
The method that Fig. 1 is the embodiment of the present invention 1 is pressed journey figure.
The present embodiment provides a kind of digital method for equalizing voltage of voltage source, in order to reduce the prior art numeral risk that all the pressure scheme exists, the security that improves power-supply system.The method of the present embodiment comprises: the digital communication passage of setting up a high speed between each voltage source, each voltage source sends the current magnitude of voltage of this module to other voltage source in the mode of multicast, receive magnitude of voltage storage (as being stored in the internal register of dsp chip) that other voltage source sends simultaneously, each voltage source calculates the equal threshold voltage of a system according to the current magnitude of voltage of all voltage sources, according to this equal threshold voltage, the output voltage of each module self is integrated, made the output voltage values of self be integrated into equal threshold voltage.
The method comprises the steps:
The current load voltage value of each voltage source that S201, reception series electrical potential source send by multicast;
S202, according to the current magnitude of voltage of the described series electrical potential source received and the current magnitude of voltage of self, generate the equal threshold voltage of all voltage sources;
S203, according to described equal threshold voltage, the output voltage of self is integrated, made the output voltage values of self be integrated into described equal threshold voltage.
Adopt multicast mode to transmit the current magnitude of voltage of each voltage source, therefore, each voltage source can be according to the current magnitude of voltage computation of mean values voltage of other modules that receive, and independently integrate the output voltage values of self according to this equal threshold voltage.The method does not need to control all voltage sources by a Centralized Controller and carries out the voltage integration, has avoided the system crash caused due to the Centralized Controller fault, has improved the reliability of system.
Alternatively, better for the real-time that voltage is integrated, the present embodiment also needs to generate one for carrying out the disturbed value of output voltage integration, and this disturbed value can reflect the variable quantity of current voltage, alternatively, this disturbed value can also reflect the variable quantity of equal threshold voltage.
Alternatively, the present embodiment is according to all threshold voltage and disturbed value are integrated output voltage jointly.
A kind of optional integration method comprises: the variable quantity that generates equal threshold voltage according to described equal threshold voltage; Disturbed value according to the variable quantity formation voltage value of described equal threshold voltage; Generate control voltage according to described equal threshold voltage and described disturbed value; Obtain the load output voltage according to described control voltage.
Claims (5)
1. the digital method for equalizing voltage of a voltage source, is characterized in that, described method comprises:
The current magnitude of voltage of each voltage source that reception series electrical potential source sends by multicast;
According to the current magnitude of voltage of the described series electrical potential source received and the current magnitude of voltage of self, generate the equal threshold voltage of all voltage sources;
According to described equal threshold voltage, the output voltage of self is integrated, made the output voltage values of self be integrated into described equal threshold voltage.
2. method according to claim 1, is characterized in that, described method also comprises:
Generate the variable quantity of equal threshold voltage according to described equal threshold voltage; Disturbed value according to the variable quantity formation voltage value of described equal threshold voltage; Generate control voltage according to described equal threshold voltage and described disturbed value; Obtain output voltage according to described control voltage.
3. method according to claim 2, is characterized in that, described method also comprises:
Generate the variable quantity of current magnitude of voltage according to current magnitude of voltage; Generate the disturbed value of described magnitude of voltage according to the variable quantity of the variable quantity of described current magnitude of voltage and described equal threshold voltage.
4. method according to claim 1, is characterized in that, described method also comprises:
Magnitude of voltage to self is sampled, and generates the current magnitude of voltage of self; The current magnitude of voltage multicast of self is given to the voltage source of a plurality of series connection.
5. method according to claim 1, is characterized in that, described voltage source carries out the data transmission by the Industrial Ethernet bus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104082608A CN103455079A (en) | 2013-09-10 | 2013-09-10 | Digital voltage-sharing method of voltage sources |
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| CN2013104082608A CN103455079A (en) | 2013-09-10 | 2013-09-10 | Digital voltage-sharing method of voltage sources |
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| CN103455079A true CN103455079A (en) | 2013-12-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591792A (en) * | 2017-10-16 | 2018-01-16 | 四川英杰电气股份有限公司 | A kind of current sharing control method and device |
| CN107612309A (en) * | 2017-10-16 | 2018-01-19 | 四川英杰电气股份有限公司 | A kind of series average-voltage control method and device |
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| CN201868928U (en) * | 2010-12-13 | 2011-06-15 | 中国船舶重工集团公司第七一二研究所 | Charging equalizing judgment and supplement device for energy consumption type battery pack |
| CN102111005A (en) * | 2011-03-08 | 2011-06-29 | 上海大学 | Equalization management system and method for nondestructive lithium battery |
| EP2400626A2 (en) * | 2010-06-28 | 2011-12-28 | Hitachi Vehicle Energy, Ltd. | Battery control circuit |
| CN102655346A (en) * | 2012-04-25 | 2012-09-05 | 浙江大学 | Intelligent battery module and battery pack with automatic balance capability |
| US20130057293A1 (en) * | 2011-09-02 | 2013-03-07 | Renesas Electronics Corporation | Voltage monitoring circuit, test method therefor, and voltage monitoring system |
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2013
- 2013-09-10 CN CN2013104082608A patent/CN103455079A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2400626A2 (en) * | 2010-06-28 | 2011-12-28 | Hitachi Vehicle Energy, Ltd. | Battery control circuit |
| CN201868928U (en) * | 2010-12-13 | 2011-06-15 | 中国船舶重工集团公司第七一二研究所 | Charging equalizing judgment and supplement device for energy consumption type battery pack |
| CN102111005A (en) * | 2011-03-08 | 2011-06-29 | 上海大学 | Equalization management system and method for nondestructive lithium battery |
| US20130057293A1 (en) * | 2011-09-02 | 2013-03-07 | Renesas Electronics Corporation | Voltage monitoring circuit, test method therefor, and voltage monitoring system |
| CN102655346A (en) * | 2012-04-25 | 2012-09-05 | 浙江大学 | Intelligent battery module and battery pack with automatic balance capability |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591792A (en) * | 2017-10-16 | 2018-01-16 | 四川英杰电气股份有限公司 | A kind of current sharing control method and device |
| CN107612309A (en) * | 2017-10-16 | 2018-01-19 | 四川英杰电气股份有限公司 | A kind of series average-voltage control method and device |
| CN107612309B (en) * | 2017-10-16 | 2020-01-07 | 四川英杰电气股份有限公司 | Series voltage-sharing control method and device |
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Application publication date: 20131218 |