CN113422443B - Magnetic adsorption type underwater wireless power supply system with multiple transmitting and receiving coils in cascade connection - Google Patents
Magnetic adsorption type underwater wireless power supply system with multiple transmitting and receiving coils in cascade connection Download PDFInfo
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- CN113422443B CN113422443B CN202110845533.XA CN202110845533A CN113422443B CN 113422443 B CN113422443 B CN 113422443B CN 202110845533 A CN202110845533 A CN 202110845533A CN 113422443 B CN113422443 B CN 113422443B
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- 238000005070 sampling Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 17
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- 238000000034 method Methods 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
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- 238000004806 packaging method and process Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- 238000011217 control strategy Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a multi-transmitting multi-receiving coil cascading magnetic adsorption type underwater wireless power supply system, which comprises: an AUV receiving end and an underwater charging device; the AUV receiving end comprises a coil receiving end, a first magnet array, a resonance compensation circuit, a rectification filter circuit, a battery pack, a first NFC module, a reverse electromagnet, a modulation circuit, a control circuit, an electromagnet driving circuit and a transformer, wherein the underwater charging device comprises a watertight joint, an underwater cable, a second magnet array, a second NFC module, a coil transmitting end, a driving circuit, a compensation circuit, a high-frequency inverter circuit and a second battery pack, the second magnet array is connected to the coil transmitting end, the coil transmitting end is connected with the compensation circuit, the compensation circuit is connected with the high-frequency inverter circuit, the high-frequency inverter circuit is connected with the battery pack, and the high-frequency inverter circuit is connected with the driving circuit.
Description
Technical Field
The invention relates to the technical field of wireless power transmission, in particular to a magnetic adsorption type underwater wireless power supply system with multiple transmission and multiple receiving coils in cascade connection.
Background
The wireless power transmission of an AUV (autonomous underwater vehicle, autonomous Underwater Vehicles) is one of typical underwater WPT system application examples, the AUV is used as an offshore strength, the advantages of autonomous control, more flexibility and freedom in offshore operation and the like are achieved, the AUV plays an important role in the fields of exploration topography, salvage of sunken ships, underwater cable laying, underwater maintenance and the like, but the charging of the AUV at present is subject to the problems of seawater corrosion, complicated charging process and the like due to the fact that a battery is detached for water inflow, the AVU is used for charging under water, the underwater operation time can be effectively prolonged, the working efficiency is improved, a non-contact charging system is completely isolated from a circuit of a transmitting end and a circuit of a receiving end, electric energy is transmitted in a non-contact mode through electromagnetic coupling among coils, circuits on two sides are independently packaged, risks such as friction leakage and the like are eliminated, the AUV can have good waterproof performance through simple packaging, and the wireless charging becomes an ideal charging mode of the AUV.
At present, the electric energy transmission of the AUV mostly adopts a high-power limited charging system, but the problems of rigid connection, connector abrasion and corrosion, inconvenient operation of a high-power plug interface and the like of the wired charging system are outstanding, and the existing underwater wireless power supply system faces the following problems: 1. the transmission power and efficiency are insufficient to power the AUV; when the specific increase between two coils is caused by the contradiction between the distance and the volume, the radius of the coils needs to be increased if the same transmission effect is to be achieved; the electric energy transmission is unstable, the underwater wireless charging is complicated and changeable due to the environment, the requirement on stability is higher, and the uncertainty of water flow impact influences the transmission effect of the wireless charging system; at present, various solutions are proposed for the stability of wireless charging, but complex mechanical structures are mostly adopted to keep the magnetic core gap stable, but this results in complex structures and increased system weight.
Disclosure of Invention
According to the problems existing in the prior art, the invention discloses a multi-transmitting and multi-receiving coil cascading magnetic adsorption type underwater wireless power supply system, an AUV receiving end and an underwater charging device;
the AUV receiving end comprises a coil receiving end, a first magnet array, a resonance compensation circuit, a rectification filter circuit, a battery pack, a first NFC module, a reverse electromagnet, a modulation circuit, a control circuit, an electromagnet driving circuit and a transformer, wherein the first magnet array is connected to the coil receiving end, the coil receiving end is connected with the resonance compensation circuit, the resonance compensation circuit is connected with the rectification filter circuit, the rectification filter circuit is connected with the battery pack, the resonance compensation circuit is also connected with the modulation circuit, the modulation circuit is connected with the control circuit, the control circuit is connected with the electromagnet driving circuit, the electromagnet driving circuit is connected with the coil receiving end, and the battery pack is connected with the transformer;
the underwater charging device comprises a watertight connector, an underwater cable, a second magnet array, a second NFC module, a coil transmitting end, a driving circuit, a compensation circuit, a high-frequency inverter circuit and a second battery pack, wherein the second magnet array is connected to the coil transmitting end, the coil transmitting end is connected with the compensation circuit, the compensation circuit is connected with the high-frequency inverter circuit, the high-frequency inverter circuit is connected with the battery pack, and the high-frequency inverter circuit is connected with the driving circuit.
Further, the coil transmitting terminal comprises n negative resistors and n transmitting modules L pn The coil receiving end comprises n receiving modules and 1 load R L N transmitting modules are connected in series with n negative resistors, each transmitting module L pn Each comprises a transmitting coil L connected in series pi Resonant capacitor C of transmitting end pi And the equivalent internal resistance R of the transmitting coil Si N transmitting modules L pn Is in a decoupled or weakly coupled state with respect to each other; n receiving modules and load R L Connected in parallel, each receiving module comprises a receiving coil L connected in series si And receiving end resonant capacitor C si Receiving coils L of n receiving modules si In a decoupled or weakly coupled state with respect to each other.
Further, the coil receiving end comprises a plurality of coupling coils, wherein the coupling coils are formed by winding anti-eddy wires, and the geometric structure of the coupling coils is formed by winding Archimedes coils and litz wires.
Further, the negative resistance comprises an alternating current controlled voltage source and a control module, the control module comprises a drive control signal generation module, a drive control signal switching module and a switch drive module which are sequentially connected, the drive control signal generation module comprises n current sampling modules and n zero-crossing comparison modules to generate n paths of drive control signals, wherein the input end of the ith current sampling module is connected with the ith transmitting module, and the output end of the ith current sampling module is connected with the input end of the ith zero-crossing comparison module.
Due to the adoption of the technical scheme, the magnetic adsorption type underwater wireless power supply system with multiple transmitting and receiving coils in cascade is designed for the AUV, the problems that the AUV has poor endurance, the charging process is time-consuming and labor-consuming and unsafe are solved, and the like are solved, so that when the AUV needs to be charged, the AUV only needs to be close to a wireless charging device, and the wireless charging device can be widely installed on a ship, an offshore supply station, an offshore wind power station, an offshore solar power station and the like, so that the charging process is effectively shortened, the working efficiency and the working range are improved, in addition, the invention provides an improved wireless charging structure in an aircraft, provides a wireless charging realization process, solves the complicated process of AUV charging, and effectively realizes stable wireless electric energy transmission by a magnetic adsorption charging mode on the premise of not increasing the volume and the weight of equipment as much as possible.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system of the present invention;
FIG. 2 is a schematic diagram of a single-loop negative resistance in the system of the present invention;
FIG. 3 is a circuit schematic and control flow chart of the system of the present invention;
FIG. 4 is a control strategy diagram of the system of the present invention; the method comprises the steps of carrying out a first treatment on the surface of the
Fig. 5 is a block diagram of archimedes' coil in the system of the present invention.
Detailed Description
In order to make the technical scheme and advantages of the present invention more clear, the technical scheme in the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:
the magnetic adsorption type underwater wireless power supply system with multiple transmitting and receiving coils cascaded as shown in fig. 1 comprises an AUV and an underwater charging device;
the AUV receiving end comprises a coil receiving end 309, a first magnet array 302, a resonance compensating circuit 305, a rectification filter circuit 304, a battery pack 306, a first NFC module 303, a reverse electromagnet 301, a modulating circuit 310, a control circuit 311, an electromagnet driving circuit 307 and a transformer 308, wherein the first magnet array 302 is connected to the coil receiving end 309, the coil receiving end 309 is connected to the resonance compensating circuit 305, the resonance compensating circuit 305 is connected to the rectification filter circuit 304, the rectification filter circuit 304 is connected to the battery pack 306, the resonance compensating circuit 305 is also connected with a modulating circuit 310, the modulating circuit 310 is connected to the control circuit 311, the control circuit 311 is connected to the electromagnet driving circuit 307, the electromagnet driving circuit 307 is connected to the coil receiving end 309, and the battery pack 306 is connected to the transformer 308.
The underwater charging device comprises a watertight connector 209, an underwater cable 208, a second magnet array 207, a second NFC module 206, a coil transmitting end 205, a driving circuit 204, a compensation circuit 203, a high-frequency inverter circuit 202 and a second battery pack 201, wherein the second magnet array 207 is connected to the coil transmitting end 205, the coil transmitting end 205 is connected with the compensation circuit 203, the compensation circuit 203 is connected with the high-frequency inverter circuit 202, the high-frequency inverter circuit 202 is connected with the second battery pack 201, and the driving circuit 204 is further connected to the high-frequency inverter circuit 202.
Further, the coil receiving end 309 and the coil transmitting end 205 are formed by winding anti-eddy wires, the coil structure is an archimedes coil, and the coil structure is formed by winding litz wires (with the diameter of 0.05 mm, 1000 strands). Furthermore, the required inductance can be obtained by adjusting the number of turns of the coil.
The coil transmitting terminal 205 includes n negative resistors and n transmitting modules L pn The coil receiving end 309 includes n receiving modules and 1 load R L N transmitting modules are connected in series with n negative resistors, each transmitting module L pn Each comprises a transmitting coil L connected in series pi Resonant capacitor C of transmitting end pi And the equivalent internal resistance of the transmitting coilR Si N transmitting modules L pn Is a transmitting coil L of (1) pi Are in a decoupling or weak coupling state; n receiving modules and load R L Connected in parallel, each receiving module comprises a receiving coil L connected in series si And receiving end resonant capacitor C si Receiving coils L of n receiving modules si In a decoupled or weakly coupled state with respect to each other.
The negative resistance comprises an alternating current controlled voltage source and a control module, wherein the control module comprises a drive control signal generating module, a drive control signal switching module and a switch drive module which are sequentially connected, the drive control signal generating module comprises n current sampling modules and n zero-crossing comparison modules to generate n paths of drive control signals, the input end of the ith current sampling module is connected with the ith transmitting module, and the output end of the ith current sampling module is connected with the input end of the ith zero-crossing comparison module.
Therefore, the design of the negative resistance is particularly important, the negative resistance is realized by adopting a high-frequency full-bridge inverter circuit, the high-frequency full-bridge inverter circuit comprises a power field effect transistor Sn1, a power field effect transistor Sn2, a power field effect transistor Sn3 and a power field effect transistor Sn4, a current sensor adopts a CU8965, an operational amplifier adopts an LM6172, a zero-crossing comparator adopts a TL3016, the MOSFET model in the full-bridge inverter is BSC098N10NS5, and the on resistance is small. The compensation capacitor adopts a multilayer ceramic capacitor.
The watertight connector 209 is a shell surrounding the underwater charging device, and the shell adopts graphite copper and waterproof material double-layer packaging, so that the waterproof charging device has certain radiation protection and waterproof functions.
Further, when the device is in contact with the AUV charging area, the second NFC module 206 and the first NFC module 303 may acquire parameter information such as electric quantity, matching voltage, and temperature.
Further, the coil transmitting end 205, the capacitor C and the negative resistor of the underwater charging device are connected in series, the coil receiving end 309 is connected in series with an inductor and a capacitor for realizing larger power electric energy transmission, the coil receiving end 309 is connected to the battery pack 306 of the AUV receiving end respectively, after charging, the first NFC module 303 receives the loaded analog signal and converts the analog signal into a digital signal through the resonance compensation circuit 305 of the AUV receiving end, the modulation circuit 310 converts the digital signal into a control circuit 311, the control circuit 311 converts the digital signal into an electromagnet driving circuit 307, and a reverse magnetic field is generated to counteract the permanent magnet effect, so that the charging device loses the adsorption effect and ends the charging.
Because the present charging strategy is based on the principle of symmetric time (PT) symmetry, in PT symmetric wireless power transmission schemes, the transmission efficiency and transmission power are robust to transmission distance variations without any external tuning of the circuit. This is in contrast to standard wireless power transmission schemes, which require external tuning of the circuit to maintain high transmission efficiency as transmission distance varies.
The position relation of the electric field effect transistor in the high-frequency full-bridge inverter circuit is as follows: after being connected in series, the power field effect transistor Sn1 and the power field effect transistor Sn3 are connected in parallel with the power field effect transistor Sn2 and the power field effect transistor Sn 4.
The power flow starts from a negative resistance embedded inside the source resonator and continuously injects power into the coil transmit end. The coupling with the receiving end provides a power transfer path from the power source to the receiving end of the coil, where the power is delivered to the load. In the region of strong coupling, the system oscillates at a frequency that automatically adapts to the varying coupling rate.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. A multi-transmitting multi-receiving coil cascade magnetic adsorption type underwater wireless power supply system, which is characterized by comprising: an AUV receiving end and an underwater charging device;
the AUV receiving end comprises a coil receiving end, a first magnet array, a resonance compensation circuit, a rectification filter circuit, a battery pack, a first NFC module, a reverse electromagnet, a modulation circuit, a control circuit, an electromagnet driving circuit and a transformer, wherein the first magnet array is connected to the coil receiving end, the coil receiving end is connected with the resonance compensation circuit, the resonance compensation circuit is connected with the rectification filter circuit, the rectification filter circuit is connected with the battery pack, the resonance compensation circuit is also connected with the modulation circuit, the modulation circuit is connected with the control circuit, the control circuit is connected with the electromagnet driving circuit, the electromagnet driving circuit is connected with the coil receiving end, and the battery pack is connected with the transformer;
the underwater charging device comprises a watertight connector, an underwater cable, a second magnet array, a second NFC module, a coil transmitting end, a driving circuit, a compensation circuit, a high-frequency inverter circuit and a second battery pack, wherein the second magnet array is connected to the coil transmitting end, the coil transmitting end is connected with the compensation circuit, the compensation circuit is connected with the high-frequency inverter circuit, the high-frequency inverter circuit is connected with the battery pack, and the high-frequency inverter circuit is connected with the driving circuit;
the coil transmitting end comprises n negative resistors and n transmitting modules L pn The coil receiving end comprises n receiving modules and 1 load R L N transmitting modules are connected in series with n negative resistors, each transmitting module L pn Each comprises a transmitting coil L connected in series pi Resonant capacitor C of transmitting end pi And the equivalent internal resistance R of the transmitting coil Si N transmitting modules L pn Is a transmitting coil L of (1) pi Are in a decoupling or weak coupling state; n receiving modules and load R L Connected in parallel, each receiving module comprises a receiving coil L connected in series si And receiving end resonant capacitor C si Receiving coils L of n receiving modules si In a decoupled or weakly coupled state with respect to each other.
2. The multi-transmit, multi-receive coil cascade magnetically-attached underwater wireless power supply system of claim 1, wherein: the coil receiving end comprises a plurality of coupling coils, wherein the coupling coils are formed by winding anti-eddy wires, and the geometric structure of the coupling coils is formed by winding Archimedes coils and litz wires.
3. The multi-transmit, multi-receive coil cascade magnetically-attached underwater wireless power supply system of claim 1, wherein: the negative resistance comprises an alternating current controlled voltage source and a control module, the control module comprises a drive control signal generation module, a drive control signal switching module and a switch drive module which are sequentially connected, the drive control signal generation module comprises n current sampling modules and n zero-crossing comparison modules to generate n paths of drive control signals, the input end of the ith current sampling module is connected with the ith transmitting module, and the output end of the ith current sampling module is connected with the input end of the ith zero-crossing comparison module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845533.XA CN113422443B (en) | 2021-07-26 | 2021-07-26 | Magnetic adsorption type underwater wireless power supply system with multiple transmitting and receiving coils in cascade connection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110845533.XA CN113422443B (en) | 2021-07-26 | 2021-07-26 | Magnetic adsorption type underwater wireless power supply system with multiple transmitting and receiving coils in cascade connection |
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| CN113422443A CN113422443A (en) | 2021-09-21 |
| CN113422443B true CN113422443B (en) | 2024-02-02 |
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| CN110649715A (en) * | 2019-10-28 | 2020-01-03 | 华南理工大学 | Multi-frequency many-to-one wireless power supply system based on PT (potential Transformer) symmetry principle |
| CN111731116A (en) * | 2020-06-19 | 2020-10-02 | 湖北工业大学 | Parallel segmented guide rail type dynamic wireless charging system for electric automobile |
| CN111917164A (en) * | 2020-07-09 | 2020-11-10 | 中国电力科学研究院有限公司 | Wireless charging system applied to transformer substation inspection robot |
| CN113067465A (en) * | 2021-04-28 | 2021-07-02 | 华南理工大学 | Negative resistance based on DSP control |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM385858U (en) * | 2010-02-12 | 2010-08-01 | Fu Da Tong Technology Co Ltd | Frequency conversion type wireless power supply and charging device |
| WO2016056925A1 (en) * | 2014-10-08 | 2016-04-14 | Powerbyproxi Limited | Inverter for inductive power transmitter |
| TWI699066B (en) * | 2018-11-07 | 2020-07-11 | 台灣立訊精密有限公司 | Wireless charging converting device and protection case having the same |
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2021
- 2021-07-26 CN CN202110845533.XA patent/CN113422443B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| CN110649715A (en) * | 2019-10-28 | 2020-01-03 | 华南理工大学 | Multi-frequency many-to-one wireless power supply system based on PT (potential Transformer) symmetry principle |
| CN111731116A (en) * | 2020-06-19 | 2020-10-02 | 湖北工业大学 | Parallel segmented guide rail type dynamic wireless charging system for electric automobile |
| CN111917164A (en) * | 2020-07-09 | 2020-11-10 | 中国电力科学研究院有限公司 | Wireless charging system applied to transformer substation inspection robot |
| CN113067465A (en) * | 2021-04-28 | 2021-07-02 | 华南理工大学 | Negative resistance based on DSP control |
Non-Patent Citations (1)
| Title |
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| 基于全桥逆变磁耦合谐振无线供电装置的设计;于长洋;石静;王晨;吕小妹;;信息化研究(第04期);第32-34页 * |
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