CN204304766U - Frequency converter - Google Patents
Frequency converter Download PDFInfo
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- CN204304766U CN204304766U CN201420873222.XU CN201420873222U CN204304766U CN 204304766 U CN204304766 U CN 204304766U CN 201420873222 U CN201420873222 U CN 201420873222U CN 204304766 U CN204304766 U CN 204304766U
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- winding
- armature winding
- frequency converter
- circuit
- secondary winding
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Abstract
This practicality relates to a kind of frequency converter, comprise three-phase current translation circuit, CPU main control unit, peripheral interface circuit, power module driving circuit and there is the power circuit of switch transformer, switch transformer comprises the secondary winding of armature winding and more than one being set around coil rack, secondary winding comprises first secondary winding 1 of powering to switching power source chip, to the third time level winding 3 and the 4th secondary winding 4 of system peripherals circuit supply, and to the second subprime winding 2 that the IGBT drive circuit of more than a group is powered, second subprime winding 2 comprises many groups of driving windings of coiling side by side.To organize more and drive winding side by side around the home, can ensure that each drives winding when the identical number of turn, girth is identical, achieves the basically identical of output voltage easily; In addition, many groups drive winding no longer with the mode coiling of superposition, and structure is simple, and the number of plies of switch transformer is few, and leakage inductance is low, and operating efficiency is high.
Description
Technical field
The utility model relates to a kind of frequency converter.
Background technology
General, in the internal circuit of frequency converter, need electric unit to comprise for current conversion circuit provides the switching power source chip of modulating pulse, the drive circuit etc. of the switching tube on the core of system, peripheral cell and main brachium pontis.Traditional frequency converter adopts such switch transformer: namely each group needs the power supply winding of electric unit to be wound on successively on coil rack, and even, the drive circuitry winding of each switching tube is also coiling successively.The defect of above switch transformer is adopted to be: the coil winding due to switch transformer is from inside to outside, along with the increase of the coiling number of plies, the girth of every circle coil increases, therefore, the voltage of coupling is also more, but simultaneously because the existence of the leakage inductance of transformer, output end voltage also reduces, the output voltage of multiple driving windings of coiling is successively inconsistent from inside to outside, has had a strong impact on the normal work of switching tube; In addition; The coiling number of plies is many, and the operating efficiency of switch transformer is also very low.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, and provide a kind of structure of switch transformer simple, operating efficiency is high, and the frequency converter that many groups drive winding output voltage consistent.
For achieving the above object, the utility model adopts so a kind of frequency converter, comprise three-phase current translation circuit, CPU main control unit, peripheral interface circuit, power module driving circuit and there is the power circuit of switch transformer, described switch transformer comprises the secondary winding of armature winding and more than one being set around coil rack, described secondary winding comprises first secondary winding of powering to switching power source chip, to the third time level winding and the 4th secondary winding of system peripherals circuit supply, and to the second subprime winding that the IGBT drive circuit of more than a group is powered, described second subprime winding comprises many groups of driving windings of coiling side by side.Compared with the prior art, the beneficial effects of the utility model are embodied in: will organize more and drive winding side by side around the home, and can ensure that each drives winding when the identical number of turn, girth is identical, achieves the basically identical of output voltage easily; In addition, many groups drive winding no longer with the mode coiling of superposition, and structure is simple, and the number of plies of switch transformer is few, and leakage inductance is low, and operating efficiency is high.
Especially, described second subprime winding adopts double insulation enamelled wire.Because the skin of double insulation enamelled wire has insulating cement, the pliability of this insulating cement is high, can be wear-resistant, greatly increases the insulation property of winding.
Especially, described armature winding comprises Part I armature winding, Part II armature winding, by Part I armature winding, described secondary winding and the described Part II armature winding of center outwards successively described in coiling of described coil rack.Armature winding is separated coiling, the middle secondary winding being positioned at Part I armature winding and Part II armature winding is comparatively balancedly coupled the voltage of armature winding, reduce the leakage inductance of switch transformer widely, further improve the operating efficiency of switch transformer.
Especially, the 4th described secondary winding comprises many groups of windings of powering of coiling side by side.To organize power supply winding side by side around the home, the system simultaneously can taking into account same power supply output requirement needs electric unit more.
Especially, the adjacent between two intersection of the first described secondary winding, described second subprime winding, described third time level winding, the 4th described secondary winding, described Part I armature winding and described Part II armature winding arranges insulating tape, is provided with isolation adhesive tape inside the both sides of described coil rack.By insulating tape and the setting isolating adhesive tape, prevent the electromagnetic interference between different winding, between winding and the external world.
Especially, the number of turn of described Part I armature winding is more than the number of turn of described Part II armature winding.The number of turn of Part I armature winding, more than the number of turn of Part II armature winding, can ensure that the terminal voltage of Part I armature winding and Part II armature winding is substantially impartial as far as possible, ensures that the secondary coil being positioned at center is comparatively balancedly coupled and output voltage.
Accompanying drawing explanation
Fig. 1 is the part-structure cutaway view of a kind of frequency converter breaker in middle of the utility model transformer.
Embodiment
As shown in Figure 1, a kind of frequency converter, comprise three-phase current translation circuit, CPU main control unit, peripheral interface circuit, power module driving circuit and there is the power circuit of switch transformer, switch transformer comprises the secondary winding of armature winding and more than one being set around coil rack, secondary winding comprises first secondary winding 1 of powering to switching power source chip, to the third time level winding 3 and the 4th secondary winding 4 of system peripherals circuit supply, and to the second subprime winding 2 that the IGBT drive circuit of more than a group is powered, second subprime winding 2 comprises many groups of driving windings of coiling side by side.
Second subprime winding 2 adopts double insulation enamelled wire.
Armature winding comprises Part I armature winding 5, Part II armature winding 6, by the center of coil rack 10 outside coiling Part I armature winding 5, secondary winding and Part II armature winding 6 successively.
4th secondary winding 4 comprises many groups of windings of powering of coiling side by side.
First secondary winding 1, second subprime winding 2, for the third time adjacent between two intersection of level winding the 3, the 4th secondary winding 4, Part I armature winding 5 and Part II armature winding 6 arrange insulating tape 7, are provided with isolation adhesive tape 9 inside the both sides of coil rack 10.
The number of turn of Part I armature winding 5 is more than the number of turn of Part II armature winding 6.
Claims (8)
1. a frequency converter, comprise three-phase current translation circuit, CPU main control unit, peripheral interface circuit, power module driving circuit and there is the power circuit of switch transformer, described switch transformer comprises the secondary winding of armature winding and more than one being set around coil rack, described secondary winding comprises first secondary winding of powering to switching power source chip, to the third time level winding and the 4th secondary winding of system peripherals circuit supply, and to the second subprime winding that the IGBT drive circuit of more than a group is powered, it is characterized in that: described second subprime winding comprises many groups of driving windings of coiling side by side.
2. frequency converter according to claim 1, is characterized in that: described second subprime winding adopts double insulation enamelled wire.
3. frequency converter according to claim 1 and 2, it is characterized in that: described armature winding comprises Part I armature winding, Part II armature winding, by Part I armature winding, described secondary winding and the described Part II armature winding of center outwards successively described in coiling of described coil rack.
4. frequency converter according to claim 1 and 2, is characterized in that: the 4th described secondary winding comprises many groups of windings of powering of coiling side by side.
5. frequency converter according to claim 3, is characterized in that: the 4th described secondary winding comprises many groups of windings of powering of coiling side by side.
6. frequency converter according to claim 3, it is characterized in that: the adjacent between two intersection of the first described secondary winding, described second subprime winding, described third time level winding, the 4th described secondary winding, described Part I armature winding and described Part II armature winding arranges insulating tape, is provided with isolation adhesive tape inside the both sides of described coil rack.
7. frequency converter according to claim 3, is characterized in that: the number of turn of described Part I armature winding is more than the number of turn of described Part II armature winding.
8. frequency converter according to claim 6, is characterized in that: the number of turn of described Part I armature winding is more than the number of turn of described Part II armature winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420873222.XU CN204304766U (en) | 2014-12-31 | 2014-12-31 | Frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420873222.XU CN204304766U (en) | 2014-12-31 | 2014-12-31 | Frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204304766U true CN204304766U (en) | 2015-04-29 |
Family
ID=53110273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420873222.XU Active CN204304766U (en) | 2014-12-31 | 2014-12-31 | Frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204304766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206398A (en) * | 2015-10-16 | 2015-12-30 | 安科乐康（北京）诊断技术有限公司 | Transformer used for external defibrillator and external defibrillator |
-
2014
- 2014-12-31 CN CN201420873222.XU patent/CN204304766U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206398A (en) * | 2015-10-16 | 2015-12-30 | 安科乐康（北京）诊断技术有限公司 | Transformer used for external defibrillator and external defibrillator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 325600 no.328, wei19 Road, Yueqing Economic Development Zone, Zhejiang Province Patentee after: Xingling Electrical Co., Ltd. Address before: 325604, Yueqing, Zhejiang province Liushi town wide industrial zone Patentee before: Xingling Electrical Co., Ltd. |
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| CP02 | Change in the address of a patent holder |