CN101847880B - Large-capacity, low ripple wave and multifunction charging device and charging method thereof - Google Patents
Large-capacity, low ripple wave and multifunction charging device and charging method thereof Download PDFInfo
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- CN101847880B CN101847880B CN200910048118A CN200910048118A CN101847880B CN 101847880 B CN101847880 B CN 101847880B CN 200910048118 A CN200910048118 A CN 200910048118A CN 200910048118 A CN200910048118 A CN 200910048118A CN 101847880 B CN101847880 B CN 101847880B
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a charging device, which comprises a voltage zero-crossing switching changing polarity device and a fine tuning compensator device, both of which are connected with a voltage regulator, wherein the voltage zero-crossing switching changing polarity device comprises an AC contactor unit and a three-phase compensation transformer unit. The fine tuning compensator device comprises two positive-direction dual-direction controllable silicon units, two negative-direction dual-direction controllable silicon units, a zero-direction dual-direction controllable unit, an energy absorption dual-direction controllable silicone unit and a fine tuning compensation transformer unit. The charging device utilizes the technology that the polarity is changed by the zero-crossing switching to enlarge the voltage regulation range, and also utilizes the fine tuning compensator device consisting of small power electronic elements to improve the voltage and the current control precision of the integral machine and to further improve the reliability of the charging device.
Description
[technical field]
The invention relates to a kind of charging device, particularly relevant for a kind of big capacity, low ripple, multifunction charging device.
[background technology]
Domestic existing direct current operative power source charging device roughly can reduce two big types at present:
1, thyrister form constant current constant voltage conversion hysteria charging device, though its amount of capacity is unrestricted, ripple coefficient is big, (thyristor operating angle variable quantity decision ripple size) control ` system complicated circuit, the fault probability is big, and rectifier transformer efficient is low.
2, high frequency switch power is used the N+1 mode, some technical problems of the too many and module itself of the module of selecting for use in the device, and its reliability also exists certain problem.
Above-mentioned continuous-current plant also has its common subject matter that exists except their different separately defectives:
1, along with the high speed development of science and technology with to the raising of environmental protection requirement; The country from August in 2003 regulation low-voltage electrical on the 1st product must pass through EMC (electromagnetic compatibility authentication); Not only will increase manufacturing cost and adopt the DC equipment of above-mentioned principle manufacturing significantly if satisfy the EMC technical conditions, and its manufacturing technology and producting process difficulty improve greatly.
2, the reliability of continuous-current plant itself is relatively poor.
3, harmonic value is bigger, and the power supply quality of electrical network and the equipment dependability of transformer station are formed certain infringement.
Therefore, the technology of existing continuous-current plant can not satisfy the requirement to the high reliability and the Electro Magnetic Compatibility of DC power supply of high-power station and superhigh pressure transformer station.
Along with China 60MW large power plant drops into and superhigh pressure electric substation D.C. capacity demand increasing (direct current system has considered that UPS heat is equipped with the directly total direct current system of input).Press for the direct current operative power source of high accuracy, high reliability.
Patent of invention 01113492.5 has disclosed a kind of existing charging device, the advantage that it has, and capacity is big, ripple is low, function is many, and have higher precision and reliability.But its voltage adjusting range, degree of regulation and reliability can further improve.
So, be necessary to provide a kind of new charging device, can overcome the shortcoming of existing charging device.
[summary of the invention]
The object of the present invention is to provide a kind of big capacity, low ripple, multifunction charging device and charging method thereof, the advantage that it is big with capacity, ripple is low, function is many, precision is high and reliability is high, and expanded the adjustable range of voltage.
To achieve these goals; The present invention provides a kind of charging device; Comprise that the voltage zero-cross that couples with voltage regulator switches change polarity device and fine tuning compensator device; Wherein voltage zero-cross switches and changes the polarity device in order to produce direction and all changeable three-phase voltage that exchanges of numerical value; Comprise A.C. contactor unit and three-phase compensator transformer unit, the A.C. contactor unit is connected with the secondary winding of three-phase compensator transformer unit, and the input voltage of A.C. contactor unit is the variable alternating voltage of numerical value; Fine tuning compensator device comprises that two forward bidirectional triode thyristor unit, two negative sense bidirectional triode thyristor unit, 1 absorb an energy bidirectional triode thyristor unit and an accurate adjustment compensator transformer unit to bidirectional triode thyristor unit,, and the circuit that forward voltage is provided to accurate adjustment compensator transformer unit is formed in wherein aforementioned two forward bidirectional triode thyristor unit; The circuit that negative voltage is provided to accurate adjustment compensator transformer unit is formed in aforementioned two negative sense bidirectional triode thyristor unit; The aforementioned zero circuit that zero voltage is provided to accurate adjustment compensator transformer unit of forming to the bidirectional triode thyristor unit; Absorb energy bidirectional triode thyristor unit and be used for preventing that forward, negative sense and zero are to the destruction of transfer process energy to bidirectional triode thyristor.
Compared to prior art; Charging device of the present invention utilizes voltage zero-cross to switch the purpose that change polarity device reaches expansion voltage-regulation scope; Completion is regulated to electric monorail road formula voltage regulator with folk prescription and is replaced the method that twocouese electric track formula voltage regulator is regulated, thereby realizes distributing rationally of voltage regulator.Charging device of the present invention also increases the fine tuning compensator device of utilizing small-power electronics components and parts to form and promotes the voltage and current control precision of complete machine, and further improves the reliability of charging device.In case the fine tuning compensator device fault, fine tuning compensator device can withdraw from direct current system automatically, and direct current system is had no effect.
For letting above and other objects of the present invention, characteristic and the advantage can be more obviously understandable, cooperate appended graphicly, elaborate as follows:
[description of drawings]
Fig. 1 is that the voltage zero-cross of an embodiment of charging device of the present invention switches the functional-block diagram that changes the polarity device.
Fig. 2 is the principle expanded view of Fig. 1.
Fig. 3 is the functional-block diagram of the fine tuning compensator device of an embodiment of charging device of the present invention.
Fig. 4 is the principle expanded view of Fig. 3.
[embodiment]
Narrate the embodiment of an indefiniteness of the present invention with reference to the accompanying drawings, all effects of the present invention will be more readily apparent from through narration.
Charging device of the present invention is to be the additional and perfect scheme of the direct current operative power source charging device on the source basis in patent of invention 01113492.5 principle.Compared to the charging device that patent of invention 01113492.5 is disclosed, charging device of the present invention has comprised that also voltage zero-cross switches change polarity device and fine tuning compensator device, and all the alternating voltage voltage regulator with charging device couples.It is basic identical that other modules of charging device of the present invention and patent of invention 01113492.5 are disclosed, and do not give unnecessary details at this.
Please see figures.1.and.2, voltage zero-cross switches change polarity device 1 and comprises A.C. contactor unit 10, three-phase compensator transformer unit 11.It is following that voltage zero-cross switches the formation example that changes polarity device 1 realization voltage zero-cross switching change polar functionalities.
Voltage zero-cross switch to change the formation of polar functionalities: the input voltage Ua ' of the variable ac voltage numerical value of A.C. contactor unit 10, Ub ', Uc ', be connected to the secondary winding of three-phase compensator transformer unit 11 through A.C. contactor unit 10, the elementary winding in three-phase compensator transformer unit 11 produces direction and all changeable three-phase voltage that exchanges of numerical value then.Because input voltage is the voltage regulator generation by monorail; Immutable its direction of its voltage; In order to meet the requirement that output can change polarity of voltage; Utilize the second mate contact normally closed and that often open of A.C. contactor unit 10 to constitute the voltage direction transducer; The switching signal of electric pressure converter is produced by the zero voltage signal of input voltage Ua ', Ub ', Uc ', adopts zero cross signal that A.C. contactor unit 10 and three-phase compensator transformer unit 11 are not had the surge signal, has guaranteed the input voltage continuity to three-phase compensator transformer unit 11 simultaneously.
Please with reference to Fig. 3 and Fig. 4; Fine tuning compensator device 2 is made up of small-power electronics components and parts, comprises that two forward bidirectional triode thyristor unit 20 and 21, two negative sense bidirectional triode thyristor unit 22 and 23,1 absorb energy bidirectional triode thyristor unit 25, a protection contact unit 26 and an accurate adjustment compensator transformer unit 27 to bidirectional triode thyristor unit 24.Fine tuning compensator device 2 realizes that the formation example of fine tuning compensator function is following.
The formation of fine tuning compensator function: in order forward voltage to be provided to accurate adjustment compensator transformer unit 27; Conduct positive bidirectional triode thyristor unit 20 and 21 seals negative sense bidirectional triode thyristor unit 22 and 23, zero simultaneously to bidirectional triode thyristor unit 24 and absorption energy bidirectional triode thyristor unit 25.In order to accurate adjustment compensator transformer unit 27 negative voltage to be provided, conducting negative sense bidirectional triode thyristor unit 22 and 23 seals forward bidirectional triode thyristor unit 20 and 21, zero simultaneously to bidirectional triode thyristor unit 24 and absorption energy bidirectional triode thyristor unit 25.In order to accurate adjustment compensator transformer unit 27 zero voltage to be provided, conducting zero is to bidirectional triode thyristor unit 24, seals forward bidirectional triode thyristor unit 20 and 21, negative sense bidirectional triode thyristor unit 22 and 23 and absorption energy bidirectional triode thyristor unit 25 simultaneously.Absorb energy bidirectional triode thyristor unit 25 and be used for preventing that forward, negative sense and zero are to the destruction of transfer process energy to bidirectional triode thyristor.After fine tuning compensator device 2 was damaged, starting protection contactor unit 26 can prevent that accurate adjustment compensator transformer unit 27 from producing the influence of high voltage to direct current system.
The alternating voltage voltage regulator of charging device of the present invention mainly is made up of the micro-computer controlled electronic unidirectional rail mounted voltage regulator with high reliability; Immutable its direction of its voltage; In order to meet the requirement that output can change polarity of voltage; Charging device of the present invention switch to change polarity device 1 through voltage zero-cross and utilizes the three-phase zero-point voltage to switch to change its polarity; To satisfy the needs of output variable voltage amplitude and polarity; Simultaneously the electric voltage voltage regulator is not impacted, obtain an output voltage values scalable, sine voltage signal that the changeable waveform of direction is complete through three-phase compensator transformer unit 11, for distributing rationally of complete machine device provides condition.The pressure regulation accuracy rating of electric monorail road formula voltage regulator itself can increase by one times.
Though the degree of regulation of voltage regulator can be less than 1%; But because under high-precision requirement; The rail mounted voltage regulator can frequent movement, and there is bigger influence in life-span of voltage regulator, and the present invention is in fine tuning compensator device 2 of the other series connection of voltage regulator compensator transformer for this reason.The control precision of rail mounted voltage regulator compensator transformer is set to 1.5%; Under this control precision; The rail mounted voltage regulator will be not can frequent starting, and utilize fine tuning compensator device 2 can its control precision be modulated to 0.7%～1.5%, thereby the complete machine precision reached below 1%.The principle of the invention is to be divided into secondary control to the control of the precision of complete machine; Promptly adopt voltage zero-cross to switch and change polarity device 1 and fine tuning compensator device 2; The rail mounted voltage regulator that has coupled voltage zero-cross switching change polarity device 1 has the advantage that power is big, reliability is high and be applicable to any operational environment; Simultaneously, fine tuning compensator device 2 is because adjustable range is little, and required compensation power is little; Its small-power electronics components and parts realize exchanging the adjustment of all-wave voltage easily, can bring into play the advantage of the quick adjustment function of small-power electronics components and parts.
From above-mentioned, improved prior art by the present invention, the ratio of performance to price that reliability is high, output performance is good, efficient is high and high.Through actual measurement, three-phase alternating current input-15%～+ 15%, load be from 0-80A (can be bigger), the complete machine precision of voltage regulation≤1.0%, and precision of steady current≤1.5%, voltage adjusting range is bigger.Obviously the improved charging device of the present invention can embody its novelty, creativeness and practicality fully.
Claims (4)
1. a big capacity, low ripple charging device comprise voltage regulator, it is characterized in that: this charging device also comprises all voltage zero-cross switching change polarity device and the fine tuning compensator device that couples with voltage regulator, wherein
Said voltage zero-cross switches and changes the polarity device in order to produce direction and all changeable three-phase voltage that exchanges of numerical value; Comprise A.C. contactor unit and three-phase compensator transformer unit; The output of said A.C. contactor unit is connected with the secondary winding of said three-phase compensator transformer unit; The input voltage of said A.C. contactor unit is the variable alternating voltage of numerical value that is provided by said voltage regulator, and said input voltage is connected to the secondary winding of said three-phase compensator transformer unit through said A.C. contactor unit; Said A.C. contactor unit comprises contact normally closed and that often open, constitutes the voltage direction transducer, and the switching signal of said voltage direction transducer is produced by the zero voltage signal of said input voltage; Elementary winding in said three-phase compensator transformer unit produces direction and all changeable three-phase voltage that exchanges of numerical value;
Said fine tuning compensator device comprises that two forward bidirectional triode thyristor unit, two negative sense bidirectional triode thyristor unit, 1 are to a bidirectional triode thyristor unit and an accurate adjustment compensator transformer unit; The input of said fine tuning compensator device comprises first input end and second input terminal; One end of the secondary winding of said accurate adjustment compensator transformer unit is connected with said first input end through a forward bidirectional triode thyristor unit; Be connected with said second input terminal through a negative sense bidirectional triode thyristor unit; The other end of the secondary winding of said accurate adjustment compensator transformer unit is connected with said second input terminal through a forward bidirectional triode thyristor unit; Be connected with said first input end through a negative sense bidirectional triode thyristor unit, said zero is parallelly connected with the secondary winding of said fine tuning compensator device to the bidirectional triode thyristor unit; Wherein, when said two forward bidirectional triode thyristor cell conduction and said two negative sense bidirectional triode thyristor unit, said zero when the bidirectional triode thyristor unit all seals, said fine tuning compensator device provides forward voltage to accurate adjustment compensator transformer unit; When said two negative sense bidirectional triode thyristor cell conduction and said two forward bidirectional triode thyristor unit, said zero when the bidirectional triode thyristor unit all seals, said fine tuning compensator device provides negative voltage to accurate adjustment compensator transformer unit; When said zero to bidirectional triode thyristor cell conduction and said two forward bidirectional triode thyristor unit, when two negative sense bidirectional triode thyristor unit all seal, said fine tuning compensator device provides zero voltage to accurate adjustment compensator transformer unit.
2. charging device as claimed in claim 1; It is characterized in that: fine tuning compensator device also comprises the protection contact unit; With accurate adjustment compensator transformer unit parallelly connected formation protective circuit; Start and to protect contact unit, can prevent that fine tuning compensator device damage back accurate adjustment compensator transformer unit from producing high-tension adverse effect.
3. charging device as claimed in claim 1; It is characterized in that: fine tuning compensator device comprises that also one absorbs energy bidirectional triode thyristor unit; With accurate adjustment compensator transformer unit parallelly connected formation protective circuit, be used for preventing the destruction of forward conversion process energy to forward bidirectional triode thyristor unit; Prevent that energy is to negative sense bidirectional triode thyristor unit, zero destruction to the bidirectional triode thyristor unit in the negative sense transfer process; Prevent zero in transfer process energy to zero destruction to the bidirectional triode thyristor unit.
4. charging device as claimed in claim 1 is characterized in that: fine tuning compensator device is made up of small-power electronics components and parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048118A CN101847880B (en) | 2009-03-24 | 2009-03-24 | Large-capacity, low ripple wave and multifunction charging device and charging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048118A CN101847880B (en) | 2009-03-24 | 2009-03-24 | Large-capacity, low ripple wave and multifunction charging device and charging method thereof |
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| Publication Number | Publication Date |
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| CN101847880A CN101847880A (en) | 2010-09-29 |
| CN101847880B true CN101847880B (en) | 2012-08-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104917182A (en) * | 2015-05-08 | 2015-09-16 | 四川明珠水利电力股份有限公司射洪变压器厂 | Alternating-current voltage automatic adjustment device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348244A (en) * | 2001-06-21 | 2002-05-08 | 戴芸 | Multifunctional great-capacity charger |
| WO2007028349A1 (en) * | 2005-09-09 | 2007-03-15 | Siemens Aktiengesellschaft | Device for electron energy transfer |
| WO2007031038A2 (en) * | 2005-09-13 | 2007-03-22 | Jaroslav Foglar | Voltage regulation system |
| CN200944198Y (en) * | 2006-01-16 | 2007-09-05 | 涂金龙 | Asymmetric compensation contactless A.C. voltage regulator with curve-based output |
| CN201388068Y (en) * | 2009-03-24 | 2010-01-20 | 戴芸 | Charging device |
-
2009
- 2009-03-24 CN CN200910048118A patent/CN101847880B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348244A (en) * | 2001-06-21 | 2002-05-08 | 戴芸 | Multifunctional great-capacity charger |
| WO2007028349A1 (en) * | 2005-09-09 | 2007-03-15 | Siemens Aktiengesellschaft | Device for electron energy transfer |
| WO2007031038A2 (en) * | 2005-09-13 | 2007-03-22 | Jaroslav Foglar | Voltage regulation system |
| CN200944198Y (en) * | 2006-01-16 | 2007-09-05 | 涂金龙 | Asymmetric compensation contactless A.C. voltage regulator with curve-based output |
| CN201388068Y (en) * | 2009-03-24 | 2010-01-20 | 戴芸 | Charging device |
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| CN101847880A (en) | 2010-09-29 |
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