CN204168145U - A kind of contactless energy transmission system based on nested structure transformer - Google Patents
A kind of contactless energy transmission system based on nested structure transformer Download PDFInfo
- Publication number
- CN204168145U CN204168145U CN201420688665.1U CN201420688665U CN204168145U CN 204168145 U CN204168145 U CN 204168145U CN 201420688665 U CN201420688665 U CN 201420688665U CN 204168145 U CN204168145 U CN 204168145U
- Authority
- CN
- China
- Prior art keywords
- switching tube
- winding
- magnetic tank
- inner frame
- iron core
- 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 - Fee Related
Links
Abstract
Based on a contactless energy transmission system for nested structure transformer, it relates to a kind of energy transmission system.The purpose of this utility model is in order to the contactless energy transmission system solved in existing synchronous machine cannot adapt to this high frequency transition process of DC-AC-DC of voltage, the transformer adopted in system is unsuitable for High Rotation Speed environment, coupling coefficient is low, the problem of transmission rate variance.Magnetic tank transformer of the present utility model comprises primary magnetic tank iron core, secondary magnetic tank iron core, purchasing ore, inner frame, outer winding and interior winding, purchasing ore and inner frame are hollow cylinder, the exterior radius of inner frame is less than the inwall radius of purchasing ore, outer winding technique on the outer wall of purchasing ore, interior winding technique is on the outer wall of inner frame, inner frame intercalation is in the cavity of purchasing ore, and the inner frame after intercalation and purchasing ore are placed in the cavity of first magnetic tank iron core and secondary magnetic tank iron core fastening.The utility model is safe and reliable, convenient operating maintenance.
Description
Technical field
The utility model relates to a kind of energy transmission system, is specifically related to a kind of contactless energy transmission system based on nested structure transformer, belongs to power electronics energy transmission technology field.
Background technology
Rotating magnetic field is at a high speed there is in the contactless energy transmission system of synchronous machine, magnetic tank transformer is as the critical component of contactless energy transmission system, in order to realize high efficiency Energy Transfer, the winding method of its former secondary coil adopts coaxial nested winding structure, the coupling area of former secondary coil is increased, coupling coefficient improves, and efficiency of transmission also increases further.
The maximum advantage of current existing excitation electromotor is that motor and excitation system boundary are obvious, relatively independent, simple and clear, and rotor field coil exciting current, exciting voltage easily obtain, and numerical value is accurate, and maintenance is convenient.But due to the existence of brush, add contact resistance, along with the increase of exciting current, brush and slip ring are usually because loose contact causes heating, can produce ring fire time serious and burn out brush holder and slip ring, and the quality of brush also directly has influence on operation stability, thus failure rate is higher.Meanwhile, brush often causes stronger high-frequency electromagnetic interference in the course of the work, worsens the electromagnetic environment of electric system, brings serious electromagnetic interference to drive system.Current synchronous machine is adopt AC exciter and rotary rectification device to realize brushless excitation mostly, and this brushless excitation technology makes electric machine structure become comparatively complicated, so Chinese scholars proposes the multiple structure and the scheme that realize brushless excitation in succession.As a whole, the weakness that current contactless synchronous machine exists is: first, although there is expert to consider to eliminate axial exciter, but owing to adding additional winding or attachment device, improve the complexity of electric machine structure, the existence of complementary field makes utilance unshakable in one's determination reduce, and the volume weight of motor rises, and power density declines; Secondly, because electromagnetic relationship becomes complicated, in performance, there is following part or all of deficiency in these schemes: exciting current adjustment is difficult or non-adjustable, exciting current pulsation, low speed excitation weak effect, output voltage waveforms depart from sine, torque pulsation, decrease in efficiency etc.The Switching Power Supply utilizing advanced power electronic technology to control replaces has the brush of brush excitation system and slip ring to realize the contactless brushless excitation of synchronous machine, motor can be made both to have had the high advantage of permanent magnet synchronous electric engine efficiency, have again the feature that magnetic flux is adjustable.
Contactless energy transmission mode is a kind of based on electromagnetic induction coupled wave theory, and modern power electronic energy conversion technology and control theory are in the new electric energy transmission mode of one.Achieve the Energy Transfer under the non-physical connections between supply line and power consumption equipment, thus overcome a series of defect such as contact sparking, carbon distribution, wearing and tearing that conventional contacts supply power mode has.Successfully bring into use at special occasions such as high-powered automobiles charging system and mines at present, and in synchronous machine, contactless energy transmission system cannot adapt to this high speed transition process of DC-AC-DC of electric energy, the coil winding mode of the magnetic tank transformer adopted in system mainly adopts adjoins type winding mode, as shown in Figure 2, the coupling area of the former secondary coil of this winding method is little, cause coupling coefficient low, efficiency of transmission is poor, directly reduce the excitation effect of synchronous machine, be unsuitable for high-frequency high-speed and rotate.
Summary of the invention
The purpose of this utility model is in order to the contactless energy transmission system solved in existing synchronous machine cannot adapt to this high frequency transition process of DC-AC-DC of voltage, and the transformer adopted in system is unsuitable for that High Rotation Speed environment, coupling coefficient are low, the problem of transmission rate variance.
The technical solution of the utility model is: a kind of contactless energy transmission system based on nested structure transformer, primary transformation part, conversion portion and secondary transformation part, described primary transformation part comprises controller and full bridge inverter, conversion portion comprises nested structure transformer, and secondary transformation part comprises rectifier bridge, filter circuit and rotor excitation winding;
Described nested structure transformer is magnetic tank transformer, comprise primary magnetic tank iron core, secondary magnetic tank iron core, purchasing ore, inner frame, outer winding and interior winding, described primary magnetic tank iron core and secondary magnetic tank iron core are the cylinder of inner hollow, described purchasing ore and inner frame are hollow cylinder, the exterior radius of inner frame is less than the inwall radius of purchasing ore, described outer winding technique is on the outer wall of purchasing ore, interior winding technique is on the outer wall of inner frame, described inner frame intercalation is in the cavity of purchasing ore, inner frame after intercalation and purchasing ore are placed in the cavity of first magnetic tank iron core and secondary magnetic tank iron core fastening, described filter circuit comprises filter inductance and filter capacitor,
The described controller output end of primary transformation part and the control end of full bridge inverter connect, the output of full bridge inverter and the interior winding of magnetic tank transformer connect, the outer winding of magnetic tank transformer and the input of rectifier bridge connect, output series rectifier inductance and the rotor excitation winding successively of rectifier bridge, described filter capacitor is connected in parallel on the two ends of rotor excitation winding, described secondary magnetic tank iron core and rotor excitation winding coaxial rotation.
Described full bridge inverter comprises the first switching tube, second switch pipe, 3rd switching tube and the 4th switching tube, first switching tube and the 3rd switching tube are composed in series the first half-bridge, second switch pipe and the 4th switching tube are composed in series the second half-bridge, the first switching tube after series connection is connected with the second switch pipe after series connection and the 4th paralleled power switches with the 3rd switching tube, the grid of each switching tube is all connected to the output of controller, the drain electrode of the first switching tube and the drain electrode access power supply of second switch pipe, the source electrode of the 3rd switching tube and the source ground of the 4th switching tube, the mid point of the first half-bridge that the first switching tube forms with the 3rd switching tube is connected the output of interior winding, the mid point of the second half-bridge that second switch pipe forms with the 4th switching tube is connected the input of interior winding.
Described rectifier bridge comprises the first diode and the second diode, and described outer winding adopts centre tap mode, and the first diode is located at the positive input of outer winding, and the second diode is located at the reverse input end of outer winding.
Described first switching tube, second switch pipe, the 3rd switching tube and the 4th switching tube are switching transistor, switching transistor low-power consumption, and durable, reliability is strong.
The utility model compared with prior art has following effect: the utility model DC input voitage via controller and full bridge inverter are transformed to high-frequency ac voltage, realize DC-AC conversion, alternating voltage is through magnetic tank transformer buck, again through rectifier bridge and LC filter circuit, obtain VD, realize AC-DC conversion, and then power to rotor excitation winding, which replace the brushless excitation that the brush of excitation system and slip ring can realize real meaning, and conversion process links up, the transmission of non-contact type energy under the High Rotation Speed state realized, owing to adopting nested type magnetic tank transformer, primary transformation part of the present utility model and secondary transformation part can be separated, power supply safety, reliably, convenient operating maintenance, because magnetic tank transformer outside is circular, secondary magnetic tank unshakable in one's determination along with rotor excitation winding rotate time, its magnetic circuit is affected hardly, the work of the rotor excitation winding coordinating High Rotation Speed can be adapted to completely, stop the defect brought of repeatedly wearing and tearing of slip ring and brush completely, and the coupling area of nested type magnetic tank transformer primary vice-side winding is larger, when same breath length, nested brings less former limit leakage inductance and less secondary leakage inductance, such magnetic field intensity is larger, coupling coefficient is larger, efficiency of transmission also will increase further, as shown in Figure 3, nested type magnetic tank transformer and traditional magnetic tank transformer magnetic density simulated effect contrast, can find out that nested type magnetic tank transformer has larger magnetic density, distribution also evenly, be more suitable for the magnetization energy transmission in synchronous machine High Rotation Speed magnetic field.
Accompanying drawing explanation
Fig. 1 is overall structure circuit diagram of the present utility model;
Fig. 2 is traditional magnetic tank transformer device structure front view;
Fig. 3 makes magnetic tank transformer structural front view in the utility model;
Fig. 4 is nested magnetic tank transformer and traditional magnetic tank transformer magnetic density simulation result comparison diagram, and left side is traditional magnetic tank transformer magnetic density analogous diagram, and right side is nested magnetic tank transformer magnetic density analogous diagram.
In figure 1, primary transformation part, 1-1, controller, 1-2, full bridge inverter, 2, conversion portion, 2-1, primary magnetic tank iron core, 2-2, secondary magnetic tank iron core, 2-3, purchasing ore, 2-4, inner frame, 2-5, outer winding, 2-6, interior winding, 3, secondary transformation part, 3-1, rectifier bridge, 3-2, filter circuit, 3-2-1, filter inductance, 3-2-2, filter capacitor, 3-3, rotor excitation winding, 4, magnetic tank iron core, 5, winding, 6, coil rack, V1, first switching tube, V2, second switch pipe, V3, 3rd switching tube, V4, 4th switching tube, D1, first diode, D2, second diode.
Embodiment
Accompanying drawings embodiment of the present utility model: a kind of contactless energy transmission system based on nested structure transformer of this enforcement side, primary transformation part 1, conversion portion 2 and secondary transformation part 3, described primary transformation part comprises controller 1-1 and full bridge inverter 1-2, conversion portion comprises nested structure transformer, and secondary transformation part comprises rectifier bridge 3-1, filter circuit 3-2 and rotor excitation winding 3-3;
Described nested structure transformer is magnetic tank transformer, comprise primary magnetic tank iron core 2-1, secondary magnetic tank iron core 2-2, purchasing ore 2-3, inner frame 2-4, outer winding 2-5 and interior winding 2-6, described primary magnetic tank iron core 2-1 and secondary magnetic tank iron core 2-2 is the cylinder of inner hollow, described purchasing ore 2-3 and inner frame 2-4 is hollow cylinder, the exterior radius of inner frame 2-4 is less than the inwall radius of purchasing ore 2-3, described outer winding 2-5 is wound on the outer wall of purchasing ore 2-3, interior winding 2-6 is wound on the outer wall of inner frame 2-4, described inner frame 2-4 intercalation is in the cavity of purchasing ore 2-3, purchasing ore 2-3 after intercalation and inner frame 2-4 is placed in the cavity of primary magnetic tank iron core 2-1 and secondary magnetic tank iron core 2-2 fastening, described filter circuit 3-2 comprises filter inductance 3-2-1 and filter capacitor 3-2-2,
The controller 1-1 output of described primary transformation part 1 and the control end of full bridge inverter 1-2 connect, the output of full bridge inverter 1-2 and the interior winding 2-6 of magnetic tank transformer connect, the outer winding 2-5 of magnetic tank transformer and the 3-1 input of rectifier bridge connect, the output series rectifier inductance 3-2-1 and rotor excitation winding 3-3 successively of rectifier bridge 3-1, described filter capacitor 3-2-2 is connected in parallel on the two ends of rotor excitation winding 3-3, described secondary magnetic tank iron core 2-2 and rotor excitation winding 3-3 coaxial rotation.
Described full bridge inverter comprises the first switching tube V1, second switch pipe V2, 3rd switching tube V3 and the 4th switching tube | V4, first switching tube V1 and the 3rd switching tube V3 is composed in series the first half-bridge, second switch pipe V2 and the 4th switching tube V4 is composed in series the second half-bridge, the first switching tube V1 after series connection and the 3rd switching tube V3 with connect after second switch pipe V2 and the 4th switching tube V4 be connected in parallel, the grid of each switching tube is all connected to the output of controller 1-1, the drain electrode of the first switching tube V1 and the drain electrode access power supply of second switch pipe V2, the source electrode of the 3rd switching tube V3 and the source ground of the 4th switching tube V4, the mid point of the first half-bridge that the first switching tube V1 forms with the 3rd switching tube V3 is connected the output of interior winding 2-6, the mid point of the second half-bridge that second switch pipe V2 forms with the 4th switching tube V4 is connected the input of interior winding 2-6.
Described rectifier bridge 3-1 comprises the first diode D1 and the second diode D2, and described outer winding 2-5 is the tapped winding of Intermediate Gray, and the first diode D1 is located at outer winding positive input, and the second diode D2 is located at outer winding reverse input end.
Described first switching tube V1, second switch pipe V2, the 3rd switching tube V3 and the 4th switching tube V4 are switching transistor.
Described controller 1-1 exports the turn-on and turn-off of high-frequency PWM pulse signal wheel flow control switch pipe, in a switch periods, and the first half period first switching tube V1 and the 4th switching tube V4 conducting, second switch pipe V2 and the 3rd switching tube V3 turns off; During the second half period, second switch pipe V2 and the 3rd switching tube V3 conducting, the first switching tube V1 the 4th switching tube V4 turns off.So DC input voitage is transformed to high-frequency ac square-wave voltage, realize DC-AC conversion, the frequency of described ac square-wave voltage is determined by PWM frequency, ac square-wave voltage carries out buck through magnetic tank transformer, again after rectifier bridge 3-1 and filter circuit 3-2, obtain VD, realize AC-DC conversion, and then the winding of rotor excitation winding is powered.
Described magnetic tank transformer is by accurate machining, interior purchasing ore is fixed, and secondary magnetic tank iron core 2-2 rotates with synchronous electric motor rotor, thus effectively controls the radial motion of nested magnetic tank transformer, avoid the increase of leakage inductance, and then improve its application in High Rotation Speed magnetic field.
Claims (4)
1. the contactless energy transmission system based on nested structure transformer, primary transformation part (1), conversion portion (2) and secondary transformation part (3), it is characterized in that: described primary transformation part comprises controller (1-1) and full bridge inverter (1-2), conversion portion comprises nested structure transformer, and secondary transformation part comprises rectifier bridge (3-1), filter circuit (3-2) and rotor excitation winding (3-3);
Described nested structure transformer is magnetic tank transformer, comprise primary magnetic tank iron core (2-1), secondary magnetic tank iron core (2-2), purchasing ore (2-3), inner frame (2-4), outer winding (2-5) and interior winding (2-6), described primary magnetic tank iron core (2-1) and secondary magnetic tank iron core (2-2) are the cylinder of inner hollow, described purchasing ore (2-3) and inner frame (2-4) are hollow cylinder, the exterior radius of inner frame (2-4) is less than the inwall radius of purchasing ore (2-3), described outer winding (2-5) is wound on the outer wall of purchasing ore (2-3), interior winding (2-6) is wound on the outer wall of inner frame (2-4), described outer winding (2-5) is the tapped winding of Intermediate Gray, described inner frame (2-4) intercalation is in the cavity of purchasing ore (2-3), purchasing ore (2-3) after intercalation and inner frame (2-4) are placed in the cavity that primary magnetic tank iron core (2-1) and secondary magnetic tank iron core (2-2) fasten, described filter circuit (3-2) comprises filter inductance (3-2-1) and filter capacitor (3-2-2),
Controller (1-1) output of described primary transformation part (1) and the control end of full bridge inverter (1-2) connect, the output of full bridge inverter (1-2) and the interior winding (2-6) of magnetic tank transformer connect, the outer winding (2-5) of magnetic tank transformer and (3-1) input of rectifier bridge connect, output series rectifier inductance (3-2-1) and the rotor excitation winding (3-3) successively of rectifier bridge (3-1), described filter capacitor (3-2-2) is connected in parallel on the two ends of rotor excitation winding (3-3), described secondary magnetic tank iron core (2-2) and rotor excitation winding (3-3) coaxial rotation.
2. a kind of contactless energy transmission system based on nested structure transformer according to claim 1, it is characterized in that: described full bridge inverter comprises the first switching tube (V1), second switch pipe (V2), 3rd switching tube (V3) and the 4th switching tube (V4), first switching tube (V1) and the 3rd switching tube (V3) are composed in series the first half-bridge, second switch pipe (V2) and the 4th switching tube (V4) are composed in series the second half-bridge, the first switching tube (V1) after series connection and the 3rd switching tube (V3) with connect after second switch pipe (V2) and the 4th switching tube (V4) be connected in parallel, the grid of each switching tube is all connected to the output of controller (1-1), the drain electrode of the first switching tube (V1) and the drain electrode access power supply of second switch pipe (V2), the source electrode of the 3rd switching tube (V3) and the source ground of the 4th switching tube (V4), the mid point of the first half-bridge that the first switching tube (V1) forms with the 3rd switching tube (V3) is connected the output of interior winding (2-6), the mid point of the second half-bridge that second switch pipe (V2) forms with the 4th switching tube (V4) is connected the input of interior winding (2-6).
3. a kind of contactless energy transmission system based on nested structure transformer according to claim 2, it is characterized in that: described rectifier bridge (3-1) comprises the first diode (D1) and the second diode (D2), first diode (D1) is located at outer winding positive input, and the second diode (D2) is located at outer winding reverse input end.
4. a kind of contactless energy transmission system based on nested structure transformer according to claim 3, is characterized in that: described first switching tube (V1), second switch pipe (V2), the 3rd switching tube (V3) and the 4th switching tube (V4) are switching transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688665.1U CN204168145U (en) | 2014-11-18 | 2014-11-18 | A kind of contactless energy transmission system based on nested structure transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688665.1U CN204168145U (en) | 2014-11-18 | 2014-11-18 | A kind of contactless energy transmission system based on nested structure transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204168145U true CN204168145U (en) | 2015-02-18 |
Family
ID=52541793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420688665.1U Expired - Fee Related CN204168145U (en) | 2014-11-18 | 2014-11-18 | A kind of contactless energy transmission system based on nested structure transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204168145U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533184A (en) * | 2016-12-29 | 2017-03-22 | 广东美的厨房电器制造有限公司 | Frequency converter and microwave oven |
| CN107294217A (en) * | 2017-06-26 | 2017-10-24 | 西安电子科技大学 | A kind of non-contact type apparatus for transmitting electric energy |
| CN109767902A (en) * | 2019-01-29 | 2019-05-17 | 河海大学 | A kind of high-power high-frequency rotating electric electronic transformer |
-
2014
- 2014-11-18 CN CN201420688665.1U patent/CN204168145U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533184A (en) * | 2016-12-29 | 2017-03-22 | 广东美的厨房电器制造有限公司 | Frequency converter and microwave oven |
| CN107294217A (en) * | 2017-06-26 | 2017-10-24 | 西安电子科技大学 | A kind of non-contact type apparatus for transmitting electric energy |
| CN109767902A (en) * | 2019-01-29 | 2019-05-17 | 河海大学 | A kind of high-power high-frequency rotating electric electronic transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103580292B (en) | A kind of non-contact type electric energy transmission system for rotary steering drilling tool | |
| CN104734300B (en) | A kind of electric motor car wireless charging circuit and its control method | |
| CN204168145U (en) | A kind of contactless energy transmission system based on nested structure transformer | |
| CN105470046B (en) | The coil driver of contactor and the control method of coil drive current | |
| CN204216790U (en) | A kind of scanning power supply able to programme | |
| CN104936327B (en) | A kind of magnetron for microwave oven power transmission and control method | |
| CN104936326A (en) | Magnetron power supply device used in microwave oven | |
| CN104578844A (en) | Switching mode power supply circuit | |
| CN105576849A (en) | Resonant coupling based brushless rotating member power supply apparatus | |
| Dou et al. | Investigation and design of wireless power transfer system for autonomous underwater vehicle | |
| CN101924440B (en) | Synchronous motor brushless excitation device realized by adopting switching power supply | |
| CN205039714U (en) | Ageing instrument of energy -conserving electronic load | |
| CN203827227U (en) | Novel energy-saving high-frequency excitation cabinet | |
| CN207743816U (en) | A kind of device reducing internal rotor direct current generator electromagnetic interference | |
| CN204243917U (en) | Based on the device of the magnetic coupling resonance wireless energy transfer of repeat circuit | |
| CN103199637A (en) | Wound-rotor synchronous motor exciting current non-contact type transmitting device and method thereof | |
| CN206135561U (en) | Non -contact electric energy transmission system | |
| CN217240390U (en) | Aerosol generating system, aerosol generating device and wireless charging circuit | |
| CN107040143B (en) | Power supply circuit, power supply method and metering instrument manufactured by same | |
| CN201766544U (en) | Speed setting controller of direct-current motor | |
| CN205335171U (en) | Coil drive circuit of contactor | |
| CN201781392U (en) | Device for realizing brushless excitation of synchronous motor by switching power supply | |
| CN104184358A (en) | Novel high-power pulse power supply device | |
| CN204967397U (en) | Car charger | |
| CN201201105Y (en) | Direct current welder using electromagentic furnace technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20171118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |