CN2773870Y - High-power UPS dual-core isolation transformer with leakage inductance - Google Patents
High-power UPS dual-core isolation transformer with leakage inductance Download PDFInfo
- Publication number
- CN2773870Y CN2773870Y CN 200420095777 CN200420095777U CN2773870Y CN 2773870 Y CN2773870 Y CN 2773870Y CN 200420095777 CN200420095777 CN 200420095777 CN 200420095777 U CN200420095777 U CN 200420095777U CN 2773870 Y CN2773870 Y CN 2773870Y
- Authority
- CN
- China
- Prior art keywords
- iron core
- leakage inductance
- transformer
- core
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000009423 ventilation Methods 0.000 claims abstract 2
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000010754 BS 2869 Class F Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
Images
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to a transformer technical field refers in particular to a high-power UPS area leakage inductance double iron core isolation transformer. The main iron core of the transformer is of a structure with an upper transverse yoke and a lower transverse yoke having open leakage inductance, the main iron core and the auxiliary iron core are arranged in an isolated mode, a secondary coil is wound on an inner layer and adopts a cross-phase Z connection method, a primary coil is wound on an outer layer, and the connection group adopts DZn 6. The utility model discloses can be accurate reduce Br magnetic induction intensity parameter according to the leakage inductance volume, secondary coil adopts the cross-phase Z method of connecing, and three-phase output voltage equilibrium degree reaches 0.25%, and the three-phase resistance error rate is less than 0.3%, has the ventilation structure simultaneously, and the temperature protection is good, and the noise is low, insulation level H level to accord with ann's rule IEC-742, IEC 204-1, IEC 947-1.
Description
Technical field:
The utility model relates to the transformer technology field, refers in particular to a kind of high power UPS band leakage inductance double-iron core isolating transformer.
Background technology:
Tradition on line type UPS structural principle as shown in Figure 1, its major part is: silicon controlled rectifier+battery dc bus+IGBT inverter+step-up transformer, i.e. third generation tradition on line type UPS.The type of each producer on the market, present China and foreign countries, particularly middle high power UPS all is the online structure of two conversion of this structure.Along with the continuous maturation of IGBT technology, in the mid-90, medium-and-large-sized UPS generally adopts this structure.Compare with the UPS of other structure, it is blocked in Disturbance in Power Net such as moment, harmonic wave, voltage fluctuation, frequency fluctuation and voltage noise before the load.
In the tradition on line type UPS structure, transformer is essential, because the rectifier transformer link is the low pressure link, therefore at outlet side the adjustment of step-up transformer as output voltage must be arranged.
Famous in the world UPS manufacturer U.S. EMERSON requires very high to output transformer, mainly show on the technical indicator:
1, design of transformer is required that leakage inductance is arranged, and its inductance has fine linearity;
2, high efficiency, low noise, under the situation that rectification load is fully loaded with, must not be than fully loaded resistive noise greater than 5dB (A);
3, emphasizer to be arranged, improve the peak current coefficient and reach 1: 5;
4, require three-phase equilibrium output to reach 0.25%;
5, three-phase phase resistance unbalance factor＜0.5%
6, class of insulation H level, temperature rise is less than 100 ℃;
7, zero sequence impedance and short-circuit impedance, no-load current are particular value;
8, physical dimension and appearance requirement strictness;
9, safety standard and electric property meet American-European safety and IEC-742, standards such as IEC204-1 and IEC947-1.
Domestic high power UPS all below 30KVA, its technical scheme as previously mentioned, domestic manufacturer adopts general electronic transformer, all there are the following problems:
1, need specialized designs inlet wire inductance, the no-load current particular value does not reach requirement;
2, specific zero sequence and short-circuit impedance do not reach requirement;
3, the output voltage wire degree of balance does not reach requirement;
4, thermal design does not reach requirement yet;
5, the H class F insulation does not reach requirement;
6, European safety does not reach requirement.
In sum, for the UPS that cooperates international major company produces (as U.S. XX inc, Japanese XX inc and Taiwan UPS production firm etc.) requirement, must adopt the twin-core isolating transformer of new and high technology and corresponding new material design band leakage inductance, make the electric index of its product reach requirement, and good thermal design, H insulation are arranged and meet American-European IEC-742, IEC204-1, standards such as IEC947-1.
Summary of the invention:
The purpose of this utility model is to overcome the defective of prior art, and a kind of high power UPS band leakage inductance double-iron core isolating transformer is provided, and it plays the effect of isolation, step-down, phase shift, and satisfies corresponding safety requirement.
For achieving the above object, the utility model is achieved through the following technical solutions: the main iron core of transformer is that upper and lower horizontal yoke is opened crack leakage inductance structure, main iron core and secondary iron core are provided with for isolating, coil on described main iron core and the secondary iron core includes primary coil and secondary coil, secondary coil is around nexine, and adopts and stride phase Z connection, and primary coil is around skin, link group and adopt DZn6, the outside of main iron core and secondary iron core is combined with the air duct slats structure.
As improvement of the technical scheme, described secondary iron core adopts three posts, 21 groove crack iron cores, and described transformer is built-in with integrated inductor on former limit, and the no-load current of transformer is 20% of a specified input current.
The main iron core of the utility model is that upper and lower horizontal yoke is opened crack leakage inductance structure; can accurately reduce Br magnetic induction parameter according to the leakage inductance amount, secondary coil adopts and strides phase Z connection, and the three-phase output voltage degree of balance reaches 0.25%; the three-phase resistance error rate is less than 0.3%; aeration structure is arranged simultaneously, and temperature protection is good, and noise is low; class of insulation H level; and meet safety IEC-742, IEC204-1, IEC947-1.
Description of drawings:
Accompanying drawing 1 is traditional on line type UPS structure principle chart;
Accompanying drawing 2 is an electrical schematic diagram of the present utility model;
Accompanying drawing 3 is a front view of the present utility model;
Accompanying drawing 4 is an end view of the present utility model;
Accompanying drawing 5 is major and minor iron core winding figure;
Accompanying drawing 6 is line bag figure of the present utility model.
Embodiment:
See shown in the accompanying drawing 2～6 that the utility model mainly includes main iron core 10, secondary iron core 20, wherein main iron core 10 adopts chip not to inserting, upper and lower horizontal yoke is opened crack leakage inductance structure, stem stem is provided with air gap, and secondary iron core 20 adopts three posts, 21 groove crack iron cores, and main iron core 10 is provided with for isolating with secondary iron core 20.Coil on described main iron core 10 and the secondary iron core 20 includes primary coil and secondary coil, secondary coil is around nexine, and adopt and stride phase Z connection, primary coil is around skin, link group and adopt DZn6, main iron core 10 is combined with air duct slats structure 30 with the outside of secondary iron core 20, has good thermal design.
The utility model technological process of production includes moulding skeleton, coiling, inserted sheet, transformer moulding, soaks baking, final assembly, debugging, check and warehouse-in, wherein coiling, inserted sheet, soak baking, the debugging the most key, the decision machine performance.
During use, this transformer application plays the effect of isolation, step-down, phase shift at the international UPS of major company rectifier front end.Because the bus of UPS requires to isolate with electrical network, and the busbar voltage range of definition is lower, (be generally 187DC～280VDC), and the input voltage range of front end electrical network is higher (being generally 380V-15%～+ 20%), therefore need to realize isolating and step-down, to satisfy the requirement of rectifier to input voltage range by this transformer.Simultaneously, for realizing stablizing in the rectifier control, require leading 30 degree of phase voltage of transformer output.Transformer is at the built-in integrated inductor in former limit (big or small by the short-circuit impedance decision), the transformer impulse current when being beneficial to the commutation of silicon controlled rectifier and suppressing UPS power on.The fundametal compoment of transformer input voltage frequency is 50Hz, output directly connects the three-phase thyristor rectifier bridge, flowing through transformer current is nonlinear pulsating current, contain abundant harmonic wave composition, reduce harmonic effects, transformer adopting DY type is considered the requirement in the phase shift simultaneously, and transformer DY11 connects.
Major parameter of the present utility model following (is example with 100K):
| N0. | Title | Measuring junction | Measured value | Test condition | |
| 1 | Unloaded output voltage | a-b b-c c-a | 270±4V | Input: A-B, B-C, C-A are 380V | |
| 2 | Nominal load voltage | a-b b-c c-a | 270V±5％ | Input: A-B, B-C, C-A are 380V, output adds the 100KVA resistive load | |
| 3 | Specified apparent power | 100KVA | |||
| 4 | Nominal load current | 220.4A | |||
| 5 | Mode of connection | Dy11 | |||
| 6 | Average no-load loss | ≤500W | |||
| 7 | Temperature rise | Hottest point in the coil | 100℃ | ||
| 8 | Efficient | ＞0.97 | |||
| 9 | Short-circuit impedance | A、B、C | (18 ± 2) % (being equivalent to each former limit winding electric sensibility reciprocal is 2.75mH) | ||
| 10 | No-load current | A、B、C | 10-16A | ||
| 11 | The class of insulation | H | |||
| 12 | Dielectric strength | Just, inferior → ground time → just | Leakage current＜20mA | 3000V，60S 3000V，60S | |
| 13 | The turn ratio | Just: inferior | |||
| 14 | Unloaded any the poor of two phase voltages of exporting | 1V | |||
Short-circuit impedance test and the secondary n of calculating short circuit, a, b, c allow secondary B phase line current reach 220.4A, test out the average voltage U of the three-phase of this moment elementary A, B, C.
Short-circuit impedance=(U/380) * 100%
The no-load current of transformer is 20% of a specified input current.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095777 CN2773870Y (en) | 2004-11-30 | 2004-11-30 | High-power UPS dual-core isolation transformer with leakage inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095777 CN2773870Y (en) | 2004-11-30 | 2004-11-30 | High-power UPS dual-core isolation transformer with leakage inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773870Y true CN2773870Y (en) | 2006-04-19 |
Family
ID=36709135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420095777 Expired - Lifetime CN2773870Y (en) | 2004-11-30 | 2004-11-30 | High-power UPS dual-core isolation transformer with leakage inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773870Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262189A (en) * | 2010-12-30 | 2011-11-30 | 保定天威集团有限公司 | Method for separating core excitation volt-amperes by double-core method |
| CN102646499A (en) * | 2012-05-23 | 2012-08-22 | 镇江天力变压器有限公司 | Dry type transformer with secondary iron core for electric locomotive |
| CN103123859A (en) * | 2011-11-18 | 2013-05-29 | 永济新时速电机电器有限责任公司 | High-leakage-inductance transformer |
| CN112567488A (en) * | 2018-08-28 | 2021-03-26 | 欧姆龙株式会社 | Transformer and power conversion device |
| CN113311359A (en) * | 2021-05-13 | 2021-08-27 | 上海远观物联网科技有限公司 | Transformer internal fault discrimination method based on vector analysis |
| CN116884739A (en) * | 2023-05-31 | 2023-10-13 | 江苏征日电力设备有限公司 | Novel symmetrical structure iron core column of three-phase magnetically controlled reactor |
-
2004
- 2004-11-30 CN CN 200420095777 patent/CN2773870Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262189A (en) * | 2010-12-30 | 2011-11-30 | 保定天威集团有限公司 | Method for separating core excitation volt-amperes by double-core method |
| CN103123859A (en) * | 2011-11-18 | 2013-05-29 | 永济新时速电机电器有限责任公司 | High-leakage-inductance transformer |
| CN102646499A (en) * | 2012-05-23 | 2012-08-22 | 镇江天力变压器有限公司 | Dry type transformer with secondary iron core for electric locomotive |
| CN112567488A (en) * | 2018-08-28 | 2021-03-26 | 欧姆龙株式会社 | Transformer and power conversion device |
| CN113311359A (en) * | 2021-05-13 | 2021-08-27 | 上海远观物联网科技有限公司 | Transformer internal fault discrimination method based on vector analysis |
| CN113311359B (en) * | 2021-05-13 | 2024-06-11 | 上海远观物联网科技有限公司 | Transformer internal fault discrimination method based on vector analysis |
| CN116884739A (en) * | 2023-05-31 | 2023-10-13 | 江苏征日电力设备有限公司 | Novel symmetrical structure iron core column of three-phase magnetically controlled reactor |
| CN116884739B (en) * | 2023-05-31 | 2024-04-26 | 河北邦能电气制造有限公司 | Symmetrical structure iron core column of three-phase magnetically controlled reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201210442Y (en) | Novel high-impedance autotransformer | |
| CN102982985A (en) | Multi-tap composite excitation type controllable reactor | |
| CN2773870Y (en) | High-power UPS dual-core isolation transformer with leakage inductance | |
| CN201181625Y (en) | Iron core reactor with adjustable reactance | |
| CN112069655A (en) | Loss calculation method for high-frequency high-power three-phase transformer | |
| CN100429855C (en) | Power supply wave shape correcting filter | |
| CN104376992B (en) | Series coupled transformer physical arrangement | |
| CN111667999A (en) | Transformer for electric vehicle charger | |
| CN212516874U (en) | Transformer for electric vehicle charger | |
| CN103558469B (en) | Adopt the high-power transformer no-load test method of filter compensation technology | |
| Gu et al. | Analysis and design of discrete ferrite rings to improve the efficiency of meter-range wireless gap inductive power transfer system | |
| CN210837427U (en) | Urban rail transit traction transformer | |
| CN201975222U (en) | Asymmetrical wiring balanced transformer | |
| CN103337335B (en) | Zero sequence filtering electricity-saving appliance | |
| CN205159073U (en) | Novel distribution transformer | |
| Xiufeng et al. | Simulation of dry-type air-core reactor under strand-to-strand short circuit fault | |
| CN207689549U (en) | A kind of more current channel single-phase electronic energy meter gauge stand structures | |
| CN2241915Y (en) | Star-opening-closing delta wiring pulling transformer | |
| CN113364267B (en) | EMI filter based on improved FOSTER high-frequency model and design method thereof | |
| CN110556837A (en) | Power grid harmonic wave shielding method based on four-winding induction filtering power transformer | |
| CN110661260A (en) | Power grid load flow calculation method based on four-winding induction filter transformer equivalent model | |
| CN110492495A (en) | A kind of movable type compact field high-pressure test device | |
| Hou et al. | Design and Experimental Validation of A Novel Integrated Three-Phase Inductor | |
| CN215833516U (en) | Novel loss measuring device for three-phase shunt reactor | |
| CN221861428U (en) | Oil immersed type test transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN KEWANG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: KEWANG ELECTRIC SOURCE EQUIPMENT CO., LTD., GUANGDONG Effective date: 20111014 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 523079 DONGGUAN, GUANGDONG PROVINCE TO: 523000 DONGGUAN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111014 Address after: 523000, No. 428, building 11, productivity building, Songshan science and Technology Industrial Park, Guangdong, Dongguan Patentee after: Dongguan Kewang Technology Co., Ltd. Address before: 523079 Xiping Industrial Zone, Nancheng District, Guangdong, Dongguan Patentee before: Guangdong Kewang Power Equipment Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141130 Granted publication date: 20060419 |