CN2706956Y - Hybrid unit cascade high-voltage frequency changer - Google Patents
Hybrid unit cascade high-voltage frequency changer Download PDFInfo
- Publication number
- CN2706956Y CN2706956Y CN 200420016017 CN200420016017U CN2706956Y CN 2706956 Y CN2706956 Y CN 2706956Y CN 200420016017 CN200420016017 CN 200420016017 CN 200420016017 U CN200420016017 U CN 200420016017U CN 2706956 Y CN2706956 Y CN 2706956Y
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- China
- Prior art keywords
- power unit
- winding
- combined power
- main transformer
- cell
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Abstract
The utility model discloses a hybrid unit cascade high-voltage frequency changer, using a hybrid multiplex rectifier transformer which comprises a Y-delta bending winding minor edge winding whose three phases are respectively +20 degrees, a Y-delta bending winding minor edge winding whose three phases are respectively-20 degrees, and a Y shaped connecting minor edge winding whose six phases are respectively 0 degree as a main transformer. Six hybrid power units which respectively comprises a common power unit and a high voltage power unit in a series connection mode are used; because each hybrid power unit is designed by using two basic power units whose voltage levels are different in a series connection mode, each phase uses two hybrid power units, that is to say that four basic power units can obtain the high voltage output whose output waveform is completely consistent with that when each phase uses six common power units in a cascade mode; the quantity of the basic power units used by the three phases is decreased by six; the complicated of the control device is greatly decreased, and the minor edge winding of the main transformer is decreased by six; the structure of the main transformer is simplified, and accordingly, the volume and the cost of the frequency changer device are decreased.
Description
Technical field
The utility model relates to a kind of high voltage converter, particularly a kind of mixed cell tandem type high voltage converter.
Background technology
In the prior art; Chinese patent CN1060599C discloses a kind of high-voltage large-power frequency convertor without power network pollution; to solve commercial power all kinds of blower fans more than half; pump apparatus variable-speed operation problem; it is by multistage phase shift main transformer; IGBT hands over the orthogonal unit bridges; optical fiber drive waveform and protective circuit; main control computer; secondary computer; compositions such as the PLC of control able to programme and ruling fault and control interface circuit; this high voltage converter adopts the identical cascade of power units of electric pressure to obtain high voltage output; thereby evaded directly the connect difficulty of dynamic voltage balancing of common IGBT power cell; and adopt multiple rectifying and many level PWMs inversion transformation technique; reduced the harmonic wave of input and output sides greatly; make it not only can be directly used in high-voltage motor; and it is also very little to the pollution of electrical network; power cell number that this high voltage converter adopts is more but not enough is; multistage phase shift main transformer complex structure makes that this frequency converter is bulky; the cost height.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency that overcomes the high voltage converter of the identical common IGBT cascade of power units design of above-mentioned employing electric pressure, and provide a kind of mixed cell tandem type high voltage converter, this mixed cell tandem type high voltage converter has the little advantage of input and output side harmonic wave equally, but use power cell less, thereby reduced the complexity of control device and main transformer structure and the volume of frequency converter greatly.
The technical scheme in the invention for solving the technical problem is: this mixed cell tandem type high voltage converter, it is that the mixing multiple rectifying transformer that 0 ° Y shape connects the secondary winding is made main transformer B for the tortuous winding secondary of+20 ° Y-Δ winding, three phase places for the tortuous winding secondary winding of-20 ° Y-Δ and six phase places that employing has three phase places, and the tortuous winding secondary winding output voltages of the Y-Δ of main transformer B (2U) are 2 times that Y shape connects secondary winding output voltage (1U); Each is by a common IGBT power cell 2 and the combined power unit (A that 1 series connection of high-voltage power unit constitutes to adopt six
1, A
2, B
1, B
2, C
1, C
2), combined power unit A
1, the combined power unit B
1, combined power unit C
1High-voltage power unit 1 phase place being connected on main transformer B respectively be the output of+20 ° the tortuous winding secondary of Y-Δ winding, combined power unit A
2, the combined power unit B
2, combined power unit C
2High-voltage power unit 1 phase place being connected on main transformer B respectively be the output of-20 ° the tortuous winding secondary of Y-Δ winding, each combined power unit (A
1, A
2, B
1, B
2, C
1, C
2) common IGBT power cell 2 phase place being connected on main transformer B respectively be the output that 0 ° Y shape connects the secondary winding, combined power unit A
1With combined power unit A
2, the combined power unit B
1With the combined power unit B
2, combined power unit C
1With combined power unit C
2The back Y shape that is in series connects, and its exit is the output of this frequency converter.Such high voltage converter, two combined power unit of every phase, comprise two common IGBT power cells 2 and two high-voltage power unit 1 amount to four prime power unit, be connected on main transformer B phase place respectively and be respectively 0 °, 0 °, + 20 °, four secondary winding outputs of-20 °, it is identical with the high-voltage power unit 1 output current size that is connected on the secondary winding output that main transformer B phase place is-20 ° for+20 ° secondary winding output and phase place to be connected on the size of current of main transformer B phase place after for two common IGBT power cells 2 output stacks of two secondary winding outputs of+0 °, again phase place each differ from 20 ° of stacks, its effect is identical with the multiple rectifying effect of three each cascade of power units that are made of 2 series connection of two common IGBT power cells.
Above-mentioned high-voltage power unit 1 can adopt IGCT, IEGT power cell; Also can adopt HV IGBT power cell.
This mixed cell tandem type high voltage converter provided by the utility model, each combined power unit all is made of two different prime power units in series of electric pressure, whenever, use two combined power unit mutually, promptly two common IGBT power cells and two high-voltage power unit amount to four prime power unit and can obtain with every and use the on all four high voltage output of output waveform behind six common IGBT cascade of power units mutually, and the used prime power unit number of three-phase reduces 6, not only reduced the complexity of control device greatly, but also make main transformer secondary winding reduce 6, the main transformer structure is greatly simplified, thereby reduced frequency converter equipment volume and cost.
Description of drawings
The electrical schematic diagram of the mixed cell tandem type high voltage converter that Fig. 1 is provided for the utility model embodiment.
The circuit diagram of the used combined power of the mixed cell tandem type high voltage converter unit that Fig. 2 is provided for the utility model embodiment.
Embodiment
With reference to accompanying drawing, this mixed cell tandem type high voltage converter that the utility model embodiment is provided, it is that the mixing multiple rectifying transformer that 0 ° Y shape connects the secondary winding is made main transformer B for the tortuous winding secondary of+20 ° Y-Δ winding, three phase places for the tortuous winding secondary winding of-20 ° Y-Δ and six phase places that employing has three phase places, and the tortuous winding secondary winding output voltages of the Y-Δ of main transformer B (2U) are 2 times that Y shape connects secondary winding output voltage (1U); Each is by a common IGBT power cell 2 and the combined power unit (A that 1 series connection of IGCT power cell constitutes to adopt six
1, A
2, B
1, B
2, C
1, C
2), combined power unit A
1, the combined power unit B
1, combined power unit C
1IGCT power cell 1 phase place being connected on main transformer B respectively be the output of+20 ° the tortuous winding secondary of Y-Δ winding, combined power unit A
2, the combined power unit B
2, combined power unit C
2IGCT power cell 1 phase place being connected on main transformer B respectively be the output of-20 ° the tortuous winding secondary of Y-Δ winding, each combined power unit (A
1, A
2, B
1, B
2, C
1, C
2) common IGBT power cell 2 phase place being connected on main transformer B respectively be the output that 0 ° Y shape connects the secondary winding, combined power unit A
1With combined power unit A
2, the combined power unit B
1With the combined power unit B
2, combined power unit C
1With combined power unit C
2The back Y shape that is in series connects, and its exit is the output of this frequency converter, can connect three power inputs of three-phase induction motor M respectively.
Claims (4)
1, a kind of mixed cell tandem type high voltage converter, it is characterized in that: it adopts, and to have three phase places be that the mixing multiple rectifying transformer that 0 ° Y shape connects the secondary winding is made main transformer (B) for the tortuous winding secondary of+20 ° Y-Δ winding, three phase places for the tortuous winding secondary winding of-20 ° Y-Δ and six phase places, and the tortuous winding secondary winding output voltages of the Y-Δ of main transformer (B) (2U) are 2 times that Y shape connects secondary winding output voltage (1U); Adopt six each combined power unit (A that constitute by a common IGBT power cell (2) and a high-voltage power unit (1) series connection
1, A
2, B
1, B
2, C
1, C
2), combined power unit (A
1), combined power unit (B
1), combined power unit (C
1) high-voltage power unit (a 1) phase place being connected on main transformer (B) respectively be the output of+20 ° the tortuous winding secondary of Y-Δ winding, combined power unit (A
2), combined power unit (B
2), combined power unit (C
2) high-voltage power unit (a 1) phase place being connected on main transformer (B) respectively be the output of-20 ° the tortuous winding secondary of Y-Δ winding, each combined power unit (A
1, A
2, B
1, B
2, C
1, C
2) common IGBT power cell (a 2) phase place being connected on main transformer (B) respectively be the output that 0 ° Y shape connects the secondary winding, combined power unit (A
1) and combined power unit (A
2), combined power unit (B
1) and combined power unit (B
2), combined power unit (C
1) and combined power unit (C
2) the back Y shape connection that is in series, its exit is the output of this frequency converter.
2, mixed cell tandem type high voltage converter according to claim 1 is characterized in that: and the high-voltage power unit (1) of a common IGBT power cell (2) series connection formation combined power unit is an IGCT power cell.
3, mixed cell tandem type high voltage converter according to claim 1 is characterized in that: and the high-voltage power unit (1) of a common IGBT power cell (2) series connection formation combined power unit is an IEGT power cell.
4, mixed cell tandem type high voltage converter according to claim 1 is characterized in that: and the high-voltage power unit (1) of a common IGBT power cell (2) series connection formation combined power unit is a HV IGBT power cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016017 CN2706956Y (en) | 2004-04-05 | 2004-04-05 | Hybrid unit cascade high-voltage frequency changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016017 CN2706956Y (en) | 2004-04-05 | 2004-04-05 | Hybrid unit cascade high-voltage frequency changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2706956Y true CN2706956Y (en) | 2005-06-29 |
Family
ID=34848759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420016017 Expired - Fee Related CN2706956Y (en) | 2004-04-05 | 2004-04-05 | Hybrid unit cascade high-voltage frequency changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2706956Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466442C (en) * | 2006-04-17 | 2009-03-04 | 山东新风光电子科技发展有限公司 | Multiple rectifying device formed by 12 pulse rectification |
| CN101938216A (en) * | 2009-06-30 | 2011-01-05 | 瓦孔厄伊公司 | Power transmission method and power transmission apparatus |
| CN101030733B (en) * | 2007-03-21 | 2011-04-13 | 中国科学院电工研究所 | Multi-level power converter of light unit cascade |
| CN107896065A (en) * | 2017-11-21 | 2018-04-10 | 北京合力电气传动控制技术有限责任公司 | A kind of high-power high voltage frequency converter and its control method, device, system |
-
2004
- 2004-04-05 CN CN 200420016017 patent/CN2706956Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466442C (en) * | 2006-04-17 | 2009-03-04 | 山东新风光电子科技发展有限公司 | Multiple rectifying device formed by 12 pulse rectification |
| CN101030733B (en) * | 2007-03-21 | 2011-04-13 | 中国科学院电工研究所 | Multi-level power converter of light unit cascade |
| CN101938216A (en) * | 2009-06-30 | 2011-01-05 | 瓦孔厄伊公司 | Power transmission method and power transmission apparatus |
| CN101938216B (en) * | 2009-06-30 | 2014-12-10 | 瓦孔厄伊公司 | Power transmission method and power transmission apparatus |
| CN107896065A (en) * | 2017-11-21 | 2018-04-10 | 北京合力电气传动控制技术有限责任公司 | A kind of high-power high voltage frequency converter and its control method, device, system |
| CN107896065B (en) * | 2017-11-21 | 2019-12-06 | 北京合力电气传动控制技术有限责任公司 | High-power high-voltage frequency converter and control method, device and system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |