CN201219235Y - Device for reducing harmonic wave discharged by UPS to electric network - Google Patents
Device for reducing harmonic wave discharged by UPS to electric network Download PDFInfo
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- CN201219235Y CN201219235Y CNU2008200476361U CN200820047636U CN201219235Y CN 201219235 Y CN201219235 Y CN 201219235Y CN U2008200476361 U CNU2008200476361 U CN U2008200476361U CN 200820047636 U CN200820047636 U CN 200820047636U CN 201219235 Y CN201219235 Y CN 201219235Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses an apparatus for reducing harmonic that UPS discharges to the power grid. The apparatus includes a three-phase two-winding phase-shifting transformer, an eleven harmonic filter and two groups of three-phase rectifier bridges, wherein, the three-phase two-winding phase-shifting transformer has a star shaped three-phase output winding and a triangular three-phase output winding, the eleven harmonic filter is connected to the power grid primary input terminal of the three-phase two-winding phase-shifting transformer, the star shaped three-phase output winding of the three-phase two-winding phase-shifting transformer is connected to one group of three-phase rectifier bridges, and the triangular three-phase output winding of the three-phase two-winding phase-shifting transformer is connected to the other group of three-phase rectifier bridges. The star shaped three-phase output winding self-coupling outputs a three-phase power supply with zero degree phase, the triangular three-phase output winding outputs a three-phase power supply with +30 degree shifting phase, and the two three-phase power supplies are respectively connected to the input terminal of the two three-phase rectifier bridges, accordingly obtaining a 12-phase rectifier circuit. Combining the 12-phase rectifier filter and the eleven harmonic filter, the utility model can fundamentally totally eliminate the harm of harmonic current content to the power grid.
Description
Technical field
The utility model relates to UPS (uninterrupted power supply) field, and particularly a kind of UPS that reduces is toward the harmonic wave discharged device of electrical network.
Background technology
Because UPS's extensively comes into operation, the rectifier system of UPS and its harmonic wave are released becomes the problem that people pay close attention to, and also becomes the technical task of UPS development.
Calendar year 2001 the Ministry of Information industry, communication is used that uninterrupted power supply---UPS national communication industry standard YD/T1095-2000 comes into effect.Its specification requirement is divided into I, II, 3-39 THDA of III class ∑ and is respectively this standard to UPS input current harmonics composition＜and 5%,＜15%,＜25%, usually owing to technology and cost reason generally are to adopt 6 impulse commutations, the harmonic wave that 6 impulse commutations are contained, only just reach 32% 5 times, the requirement of III class in seriously being above standard, the current harmonics that how to reduce the UPS input is released and is just become the problem that a UPS producer and UPS magnetic device supplier thereof pay close attention to.
The utility model content
The purpose of this utility model provides a kind of UPS of reduction toward the harmonic wave discharged device of electrical network, reduces that electrical network is polluted.
The technical solution of the utility model is such: reduce UPS toward the harmonic wave discharged device of electrical network, comprise three-phase two winding phase shifting transformers, 11 subharmonic filters and two groups of three-phase commutation bridges, above-mentioned three-phase two winding phase shifting transformers have star three-phase output winding and triangle three-phase output winding, above-mentioned 11 subharmonic filters are connected in the former limit of the electrical network input of above-mentioned three-phase two winding phase shifting transformers, the star three-phase output winding of above-mentioned three-phase two winding phase shifting transformers is connected in the input of above-mentioned one group of three-phase commutation bridge, and the triangle three-phase output winding of above-mentioned three-phase two winding phase shifting transformers is connected in the input of above-mentioned another group three-phase commutation bridge.
The former limit of the electrical network input of above-mentioned three-phase two winding phase shifting transformers is serially connected with inductance.
The star three-phase output winding of above-mentioned three-phase two winding phase shifting transformers is serially connected with another inductance.
Above-mentioned three-phase two winding phase shifting transformers are the self coupling isolating transformer.
Above-mentioned 11 subharmonic filters are series connection m formula filter.
Be connected with interphase reactor between above-mentioned two groups of three-phase commutation bridges.
After adopting such scheme, reduction UPS of the present utility model is toward the harmonic wave discharged device of electrical network, the three phase mains of 0 ° of phase place of star three-phase output winding self coupling output of three-phase two winding phase shifting transformers, the three phase mains of+30 ° of phase shifts of triangle three-phase output winding output, and these two groups of three phase mains are connected to the input of two groups of three-phase commutation bridges respectively, three-phase commutation bridge is equivalent to six-phhase circuit, and therefore the three-phase commutation bridge by 30 ° of two groups of phase differences just obtains 12 commutating phase circuit.Owing to adopted 12 commutating phase circuit, 5,7,17,19 ... subharmonic is cancelled out each other, the intensity maximum is 11 subharmonic in the remaining 12K+1 subharmonic, and therefore, the utility model is provided with 11 subharmonic filters at the former limit input of three-phase two winding phase shifting transformers.The number of phases the more, the minimum subfrequency in the commutating voltage is higher, its amplitude is littler, more near direct voltage, filtering is also easier, and the utility model is in conjunction with 12 phase controlled rectification circuits and 11 subharmonic filters, and harmonic carcellation electric current content is to the harm of electrical network substantially fully.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model reduces UPS toward the harmonic wave discharged device of electrical network, with 160KVA UPS is example, as shown in Figure 1, comprise three-phase two winding phase shifting transformers, 11 subharmonic filters 2 and three- phase commutation bridge 3,4, the former limit input of the electrical network of three-phase two winding phase shifting transformers 400V voltage, three-phase two winding phase shifting transformers have star three-phase output winding 11 and triangle three-phase output winding 12, the input of the former limit of the electrical network of three-phase two winding phase shifting transformers also is serially connected with inductance L 1, and the effect of inductance L 1 is to suppress to power on surge and carry out the power factor (PF) adjustment.
The series connection m formula filter of 11 subharmonic filters 2 for being formed by connecting by inductance L 2 and capacitor C 1, when utilizing parallel resonance impedance greatly and the minimum characteristics of series resonant impedance improve the resistance characteristic, 11 subharmonic filters 2 are connected in the former limit of the electrical network input of three-phase two winding phase shifting transformers.
0 ° of phase place 480V three phase mains of star three-phase output winding 11 self couplings output of three-phase two winding phase shifting transformers, the star three-phase output winding 11 of three-phase two winding phase shifting transformers is connected in the input of three-phase commutation bridge 3 by inductance L 3, for three-phase commutation bridge 3 provides 0 ° of phase place 480V three phase mains, herein inductance L 3 can reduce power on surge with improve load cos θ 0 ° of self coupling output mutually.The triangle three-phase output winding 12 of three-phase two winding phase shifting transformers is with respect to+30 ° of phase shift 480V three phase mains of star three-phase output winding 11 outputs, the triangle three-phase output winding 12 of three-phase two winding phase shifting transformers is connected in the input of three-phase commutation bridge 4, for three-phase commutation bridge 4 provides+30 ° of phase shift 480V three phase mains.
The triangle three-phase output winding 12 of three-phase two winding phase shifting transformers is designed to the built-in leakage inductance of twin-core, promptly adopts short-circuit impedance to be designed to 11%, and quite triangle output crosstalk sense is 1.43mH/117.2A as calculated, and is cost-saved.
Star three-phase output winding 11, the triangle three-phase output winding 12 of three-phase two winding phase shifting transformers are powered respectively and are given three- phase commutation bridge 3,4, three- phase commutation bridge 3,4 common powering loads in parallel.For three- phase commutation bridge 3,4 can be conducted electricity simultaneously, realize that parallel running gets load balance, between three- phase commutation bridge 3,4, be connected with interphase reactor L
P
Reduction UPS of the present utility model is toward the harmonic wave discharged device of electrical network, 0 ° of phase place 480V three phase mains of star three-phase output winding 11 self couplings output of three-phase two winding phase shifting transformers ,+30 ° of phase shift 480V three phase mains of triangle three-phase output winding output, and these two groups of three phase mains are connected to the input of three- phase commutation bridge 3,4 respectively, three-phase commutation bridge is equivalent to six-phhase circuit, and therefore the three-phase commutation bridge by 30 ° of two groups of phase differences just obtains 12 commutating phase circuit.Owing to adopted 12 commutating phase circuit, 5,7,17,19 ... subharmonic is cancelled out each other, the intensity maximum is 11 subharmonic in the remaining 12K+1 subharmonic, and therefore, the utility model is provided with 11 subharmonic filters 2 at the former limit input of three-phase two winding phase shifting transformers.The number of phases the more, the minimum subfrequency in the commutating voltage is higher, its amplitude is littler, more near direct voltage, filtering is also easier, and the utility model is in conjunction with 12 commutating phase circuit and 11 subharmonic filters, and harmonic carcellation electric current content is to the harm of electrical network substantially fully.
In the utility model, three-phase two winding phase shifting transformers are the optimal design of employing self coupling/isolation of reducing cost, and it is 0.6 times that iron core area of section St is saved, and reduces cost greatly.And for raising the efficiency, three-phase two winding phase shifting transformers adopt the step-up transformer of 380/480V.
When the utility model used, best 12 commutating phase devices can provide 100% redundancy, are the twice of rated capacity value, except reducing harmonic content, provided the rectifier of double copies, thereby increased the reliability of UPS complete machine.
Claims (6)
1, reduce UPS toward the harmonic wave discharged device of electrical network, it is characterized in that: comprise three-phase two winding phase shifting transformers, 11 subharmonic filters and two groups of three-phase commutation bridges, above-mentioned three-phase two winding phase shifting transformers have star three-phase output winding and triangle three-phase output winding, above-mentioned 11 subharmonic filters are connected in the former limit of the electrical network input of above-mentioned three-phase two winding phase shifting transformers, the star three-phase output winding of above-mentioned three-phase two winding phase shifting transformers is connected in the input of above-mentioned one group of three-phase commutation bridge, and the triangle three-phase output winding of above-mentioned three-phase two winding phase shifting transformers is connected in the input of above-mentioned another group three-phase commutation bridge.
2, reduction UPS according to claim 1 is toward the harmonic wave discharged device of electrical network, and it is characterized in that: the former limit of the electrical network input of above-mentioned three-phase two winding phase shifting transformers is serially connected with inductance.
3, reduction UPS according to claim 1 is characterized in that toward the harmonic wave discharged device of electrical network: the star three-phase output winding of above-mentioned three-phase two winding phase shifting transformers is serially connected with another inductance.
4, reduction UPS according to claim 1 is toward the harmonic wave discharged device of electrical network, and it is characterized in that: above-mentioned three-phase two winding phase shifting transformers are the self coupling isolating transformer.
5, reduction UPS according to claim 1 is characterized in that toward the harmonic wave discharged device of electrical network: above-mentioned 11 subharmonic filters are series connection m formula filter.
6, reduction UPS according to claim 1 is characterized in that: be connected with interphase reactor between above-mentioned two groups of three-phase commutation bridges toward the harmonic wave discharged device of electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200476361U CN201219235Y (en) | 2008-05-13 | 2008-05-13 | Device for reducing harmonic wave discharged by UPS to electric network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200476361U CN201219235Y (en) | 2008-05-13 | 2008-05-13 | Device for reducing harmonic wave discharged by UPS to electric network |
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| Publication Number | Publication Date |
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| CN201219235Y true CN201219235Y (en) | 2009-04-08 |
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| CNU2008200476361U Expired - Fee Related CN201219235Y (en) | 2008-05-13 | 2008-05-13 | Device for reducing harmonic wave discharged by UPS to electric network |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582997A (en) * | 2011-02-24 | 2014-02-12 | 克兰电子公司 | AC/DC power conversion system and method of manufacture of same |
| US9160228B1 (en) | 2015-02-26 | 2015-10-13 | Crane Electronics, Inc. | Integrated tri-state electromagnetic interference filter and line conditioning module |
| US9230726B1 (en) | 2015-02-20 | 2016-01-05 | Crane Electronics, Inc. | Transformer-based power converters with 3D printed microchannel heat sink |
| US9293999B1 (en) | 2015-07-17 | 2016-03-22 | Crane Electronics, Inc. | Automatic enhanced self-driven synchronous rectification for power converters |
| US9735566B1 (en) | 2016-12-12 | 2017-08-15 | Crane Electronics, Inc. | Proactively operational over-voltage protection circuit |
| US9742183B1 (en) | 2016-12-09 | 2017-08-22 | Crane Electronics, Inc. | Proactively operational over-voltage protection circuit |
| US9780635B1 (en) | 2016-06-10 | 2017-10-03 | Crane Electronics, Inc. | Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters |
| US9831768B2 (en) | 2014-07-17 | 2017-11-28 | Crane Electronics, Inc. | Dynamic maneuvering configuration for multiple control modes in a unified servo system |
| US9979285B1 (en) | 2017-10-17 | 2018-05-22 | Crane Electronics, Inc. | Radiation tolerant, analog latch peak current mode control for power converters |
| US10425080B1 (en) | 2018-11-06 | 2019-09-24 | Crane Electronics, Inc. | Magnetic peak current mode control for radiation tolerant active driven synchronous power converters |
| CN110350647A (en) * | 2019-06-04 | 2019-10-18 | 漳州科华技术有限责任公司 | The anti-drainage method for filling energy of UPS, bleeder and terminal |
-
2008
- 2008-05-13 CN CNU2008200476361U patent/CN201219235Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9419538B2 (en) | 2011-02-24 | 2016-08-16 | Crane Electronics, Inc. | AC/DC power conversion system and method of manufacture of same |
| CN103582997B (en) * | 2011-02-24 | 2017-02-15 | 克兰电子公司 | AC/DC power conversion system and method of manufacture of same |
| CN106877685A (en) * | 2011-02-24 | 2017-06-20 | 克兰电子公司 | AC/DC power conversion systems and its manufacture method |
| CN106877685B (en) * | 2011-02-24 | 2019-01-01 | 克兰电子公司 | AC/DC power conversion system and its manufacturing method |
| CN103582997A (en) * | 2011-02-24 | 2014-02-12 | 克兰电子公司 | AC/DC power conversion system and method of manufacture of same |
| US9831768B2 (en) | 2014-07-17 | 2017-11-28 | Crane Electronics, Inc. | Dynamic maneuvering configuration for multiple control modes in a unified servo system |
| US9230726B1 (en) | 2015-02-20 | 2016-01-05 | Crane Electronics, Inc. | Transformer-based power converters with 3D printed microchannel heat sink |
| US9160228B1 (en) | 2015-02-26 | 2015-10-13 | Crane Electronics, Inc. | Integrated tri-state electromagnetic interference filter and line conditioning module |
| US9293999B1 (en) | 2015-07-17 | 2016-03-22 | Crane Electronics, Inc. | Automatic enhanced self-driven synchronous rectification for power converters |
| US9866100B2 (en) | 2016-06-10 | 2018-01-09 | Crane Electronics, Inc. | Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters |
| US9780635B1 (en) | 2016-06-10 | 2017-10-03 | Crane Electronics, Inc. | Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters |
| US9742183B1 (en) | 2016-12-09 | 2017-08-22 | Crane Electronics, Inc. | Proactively operational over-voltage protection circuit |
| US9735566B1 (en) | 2016-12-12 | 2017-08-15 | Crane Electronics, Inc. | Proactively operational over-voltage protection circuit |
| US9979285B1 (en) | 2017-10-17 | 2018-05-22 | Crane Electronics, Inc. | Radiation tolerant, analog latch peak current mode control for power converters |
| US10425080B1 (en) | 2018-11-06 | 2019-09-24 | Crane Electronics, Inc. | Magnetic peak current mode control for radiation tolerant active driven synchronous power converters |
| CN110350647A (en) * | 2019-06-04 | 2019-10-18 | 漳州科华技术有限责任公司 | The anti-drainage method for filling energy of UPS, bleeder and terminal |
| CN110350647B (en) * | 2019-06-04 | 2022-01-14 | 漳州科华技术有限责任公司 | UPS reverse-irrigation energy discharge method and device and terminal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 Termination date: 20130513 |