CN104682581A - Dynamic wireless power supply device used for mobile equipment and based on balanced field intensity of segmental guide rails and dynamic wireless power supply method based on dynamic wireless power supply device - Google Patents
Dynamic wireless power supply device used for mobile equipment and based on balanced field intensity of segmental guide rails and dynamic wireless power supply method based on dynamic wireless power supply device Download PDFInfo
- Publication number
- CN104682581A CN104682581A CN201510130442.2A CN201510130442A CN104682581A CN 104682581 A CN104682581 A CN 104682581A CN 201510130442 A CN201510130442 A CN 201510130442A CN 104682581 A CN104682581 A CN 104682581A
- Authority
- CN
- China
- Prior art keywords
- winding
- movable equipment
- guide rail
- power supply
- wireless power
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 139
- 238000009434 installation Methods 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 238000009432 framing Methods 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 2
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
-
- H02J7/025—
Landscapes
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention relates to a dynamic wireless power supply device used for mobile equipment and based on balanced field intensity of segmental guide rails and a dynamic wireless power supply method based on the dynamic wireless power supply device, and solves problems of high electromagnetic radiation, high cost, long distance and non-uniform mutual inductance of power supply magnetic coupling mechanisms in an existing wireless power supply technology for mobile equipment. The dynamic wireless power supply method comprises the following steps: sensitive boundaries of magnetic sensors are set, the mobile equipment is positioned according to the sensitive boundaries, two stages of segmental guide rails under a mobile-equipment-side power receiving end system are opened, and the rest segmental guide rails are in closed states; controllers generate soft switch control signals according to positioning signals of the magnetic sensors, the soft switch control signals are electrically isolated and driven through isolation drivers, and drive signals are generated and used for controlling switch-on or switch-off of high-frequency inverters in the two stages of segmental guide rails; dynamic wireless power supply is realized. The dynamic wireless power supply device and method are used for dynamic wireless power supply of the mobile equipment.
Description
Technical field
The present invention relates to a kind of dynamic radio electric supply installation and dynamic radio method of supplying power to thereof of movable equipment.
Background technology
In industrial production, motor-driven fixed venue mobile device is widely used, as AGV automatic guided vehicle, tunnel cable inspection robot, rail transit, factory automation production line etc.Due to energy savings, environmental pollution is little, and electric automobile receives wideling popularize of countries in the world.Above-mentioned removable actuator often needs internal battery group or external cable to power, and have impact on its continuity used and flexibility.This just needs to explore a kind of applicable energy loading technique, solves from energy supply angle the powerup issue that above-mentioned movable equipment further develops.
Traditional plug charging modes due to the restriction being subject to interface can only be an equipment charge the same time, and charger export high voltage can cause a series of safety problem.Wireless charging technology can well solve the problem, and equipment only need reach and specify charged area by user, and just can automatically charge, this technology is called static wireless charging technology.For removable actuator, the connector that wireless charging does not expose, thoroughly avoids the potential safety hazards such as electric leakage, leakage of electricity, significantly can increase its flying power and mobile flexibility.But traditional static wireless charging also exists the problems such as course continuation mileage is short, the charging interval long, charging is frequent, battery pack volume weight is large, with high costs.Particularly for the public transit vehicle of electronic bus one class, its continuous flying power is especially important.In this context, dynamic radio charging technique arises at the historic moment, and it is in a non-contact manner for the movable equipment in traveling provides Power supply in real time.Movable equipment can carry on a small quantity even without the need to battery-mounted group, and its course continuation mileage is extended, and electric energy supply is safer, convenient simultaneously.
Existing movable equipment dynamic radio power supply technique, is intended to solve the delivery of electrical energy continuity problem existed when movable equipment dynamic radio is powered.Dynamic radio electric supply installation mainly comprises fixing ground installation and the energy acceptance be arranged on movable equipment and converting system, and main performance assessment criteria comprises: wireless energy transfer distance, efficiency, power, road surface lateral displacement distance etc.Thus, develop high-power, high efficiency, low electromagnetic, moderate cost dynamic radio electric power system, become the main research that external Ge great research institution is current.Auckland, NZL university use long guideway formula coil solves energy channel in vehicle movement process and switches the problem brought, but the mutual induction amount that the method exists transmitting coil structure and receiving terminal coil is little, this just causes the problems such as transmission range is little, efficiency of transmission is low.Korea Advanced Institute of Science and Technology adds the core structure through optimal design in coil, improves efficiency of transmission and transmission range compared with the solution of University of Auckland, but it is high to there is equipment cost after increasing magnetic core, is not suitable for the shortcoming of large-scale application.What U.S.'s Oak Ridge laboratory adopted is the scheme of many points of body coil continuous layings, its above-ground launcher adopts many monomers coil tandem jointly to form a series resonance chamber and uses the topological structure in single inversion source, but through-put power and efficiency affect by transmitting and receiving coil relative position and are rendered as inequality in vehicle travel process, extremely low at two transmitting coil centre position power efficiencies.
Particularly, there is the remarkable shortcoming of electromagnetic radiation in prior art, and current solution can only by the electromagnetic shielding measure taking some limited, as installed magnetic core or aluminium sheet, to weaken the electromagnetic radiation of human body in car at electric automobile chassis.But lay on highway large power long guide rail to travel electric automobile carry out wireless power time, when pedestrian go across the road from energising high-power guide rail process, will suffer strong electromagnetic irradiate affect, human-body safety is constituted a serious threat.According to the standard that the international Non-ionizing radiation protection committee (The International Commission on Non-Ionizing Radiation Protection, ICNIRP) is formulated, be 200mA/m at 100kHz current density public exposure limits
2, its value is too high may be impacted nerve system of human body function; Specific absorption rate (Specific Absorption Rate, SAR) limit value is 2W/kg, and power density limit value is 10W/m
2, the too high human local tissue that will cause of the two value is overheated.Therefore, be necessary to provide a kind of method and apparatus of improvement to solve above-mentioned technical problem.
Summary of the invention
The present invention seeks to solve that the electromagnetic radiation of existing movable equipment wireless power technology is high, cost is high, distance and for the uneven problem of mutual inductance between electromagnetic coupling mechanisms, provide a kind of movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail and dynamic radio method of supplying power to thereof.
Movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail of the present invention, this movable equipment dynamic radio electric supply installation comprises net side feeder ear system and movable equipment side receiving end system, nets side feeder ear system by Energy Transfer to movable equipment side receiving end system;
Net side feeder ear system comprises frequency rectifier, high power DC bus, n level sectional guide rail and n level position detection control circuit, and n is positive integer; The electric energy of electrical network is delivered on high power DC bus by frequency rectifier;
N level segmentation guide rail structure is identical, includes high-frequency inverter, complex resonant circuit and transmitting winding; High-frequency inverter at different levels is all connected in parallel on high power DC bus, and high-frequency inverter exports electric energy to complex resonant circuit, then transfers in air dielectric by launching winding;
N level position detection control circuit structure is identical, include Magnetic Sensor, controller and driver for isolating, Magnetic Sensor is arranged on adjacent two centers of launching between winding, Magnetic Sensor detects magnetic field intensity when movable equipment moves, according to threshold value, movable equipment is positioned, controller produces Sofe Switch control signal according to the framing signal of Magnetic Sensor, Sofe Switch control signal generates drive singal through driver for isolating electrical isolation with after driving, and drive singal controls the break-make of corresponding high-frequency inverter;
Described threshold value is the responsive border of the Magnetic Sensor of setting, and by setting threshold value, open the two-stage sectional guide rail immediately below the receiving end system of movable equipment side, all the other n-2 level sectional guide rails are in closed condition;
The responsive border of described Magnetic Sensor is set as:
wherein: r represents transmitting winding inscribed circle radius, d represents that adjacent two launch winding frontier distances;
The working point frequency of the Sofe Switch control signal that controller at different levels produces is f
0, the resonance frequency of complex resonant circuit at different levels is f
k, and meet f
k=f
0;
Movable equipment side receiving end system comprises reception resonant circuit, hf rectifier, DC bus, DC-DC converter, DC-AC converter, on-vehicle battery group and vehicle-mounted alternating current machine;
Receive resonant circuit and receive the magnetic energy launching winding transmission in the feeder ear system of net side, and magnetic energy is converted to the electric flux of alternating current form, DC bus is exported to after being rectified into direct current by hf rectifier, DC-DC converter and DC-AC converter are connected in parallel on DC bus, the energy received during movable equipment motion drives vehicle-mounted alternating current machine by DC-AC converter, and the energy received when movable equipment enters anchor point is the charging of on-vehicle battery group by DC-DC converter;
Receive on resonant circuit and be provided with reception winding, receive winding and receive the magnetic energy launching winding transmission in the feeder ear system of net side, the geometric center position receiving winding is provided with magnetic markers;
Produce magnetic field resonance by the transmitting winding on the two-stage sectional guide rail opened with the reception winding in the receiving end system of movable equipment side to be coupled, complete dynamic radio and power.
The dynamic radio method of supplying power to of the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail of the present invention, the detailed process of this dynamic radio method of supplying power to is:
Step 1, by the Magnetic Sensor in net side feeder ear system with launch winding and be arranged on below ground, the remaining part in the feeder ear system of net side is arranged on above the ground, and movable equipment side receiving end system is arranged in electric motor car;
The responsive border of step 2, setting Magnetic Sensor is:
wherein: r represents transmitting winding inscribed circle radius, d represents that adjacent two launch winding frontier distances;
Step 3, Magnetic Sensor measure the changing value that when electric motor car moves, trunnion axis exports, obtain magnetic field intensity, according to the responsive border that step 2 sets, electric motor car is positioned, open the two-stage sectional guide rail immediately below the receiving end system of movable equipment side, all the other n-2 level sectional guide rails are in closed condition;
Step 4, controller produce Sofe Switch control signal according to the framing signal of Magnetic Sensor, and the working point frequency of Sofe Switch control signal is f
0, the resonance frequency of setting complex resonant circuit is f
k, and meet f
k=f
0;
Step 5, Sofe Switch control signal generate drive singal through driver for isolating electrical isolation with after driving, and drive singal controls the break-make opening two-stage sectional guide rail medium-high frequency inverter;
Electric energy transfers in air dielectric by transmitting winding at the same level by step 6, the high-frequency inverter opened;
Reception winding in step 7, movable equipment side receiving end system produces magnetic field resonance with the transmitting winding in the sectional guide rail opened and is coupled, and receives winding and receives the magnetic energy launching winding transmission;
The energy that step 8, electric motor car receive when moving drives vehicle-mounted alternating current machine work by DC-AC converter, and the energy received when electric motor car enters anchor point is the charging of on-vehicle battery group by DC-DC converter, completes dynamic radio and powers.
Advantage of the present invention: the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail of the present invention is simple, and radio energy-transmitting efficiency is high, stable output power, the field homogeneity that coupling mechanism produces, electromagnetic radiation is low, with low cost, and system reliability is higher.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail of the present invention;
Fig. 2 is the electrical block diagram of net side of the present invention feeder ear system;
Fig. 3 is that transmitting winding of the present invention arranges schematic diagram with the reception size of winding and the responsive border of Magnetic Sensor;
Fig. 4 is drive singal of the present invention, high-frequency inverter voltage, transmitting winding current waveform figure;
Fig. 5 is that embodiment 2 of the present invention is opened two transmitting windings and receives winding mutual inductance curve chart, and curve a represents M1+M2, and curve b represents M1, and curve c represents M2;
Fig. 6 is efficiency of transmission and power output oscillogram in embodiment 2 movable equipment motion process of the present invention, and curve d represents through-put power, and curve e represents power output;
Fig. 7 is the power supply the principle figure of the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail of the present invention.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, Fig. 2 and Fig. 3, based on the movable equipment dynamic radio electric supply installation of the balanced field intensity of sectional guide rail described in present embodiment, this movable equipment dynamic radio electric supply installation comprises net side feeder ear system 1 and movable equipment side receiving end system 2, nets side feeder ear system 1 by Energy Transfer to movable equipment side receiving end system 2;
Net side feeder ear system 1 comprises frequency rectifier 1-1, high power DC bus 1-2, n level sectional guide rail 1-3 and n level position detection control circuit 1-4, and n is positive integer; The electric energy of electrical network is delivered on high power DC bus 1-2 by frequency rectifier 1-1;
N level sectional guide rail 1-3 structure is identical, includes high-frequency inverter 1-3-1, complex resonant circuit 1-3-2 and launches winding 1-3-3; High-frequency inverter 1-3-1 at different levels is all connected in parallel on high power DC bus 1-2, and high-frequency inverter 1-3-1 exports electric energy to complex resonant circuit 1-3-2, then transfers in air dielectric by launching winding 1-3-3;
N level position detection control circuit 1-4 structure is identical, include Magnetic Sensor 1-4-1, controller 1-4-2 and driver for isolating 1-4-3, Magnetic Sensor 1-4-1 is arranged on adjacent two centers of launching between winding 1-3-3, Magnetic Sensor 1-4-1 detects magnetic field intensity when movable equipment moves, according to threshold value, movable equipment is positioned, controller 1-4-2 produces Sofe Switch control signal according to the framing signal of Magnetic Sensor 1-4-1, Sofe Switch control signal generates drive singal through driver for isolating 1-4-3 electrical isolation with after driving, drive singal controls the break-make of corresponding high-frequency inverter 1-3-1,
Described threshold value is the responsive border of the Magnetic Sensor 1-4-1 of setting, and by setting threshold value, open the two-stage sectional guide rail 1-3 immediately below movable equipment side receiving end system 2, all the other n-2 level sectional guide rails 1-3 is in closed condition;
The responsive border of described Magnetic Sensor 1-4-1 is set as:
wherein: r represents transmitting winding inscribed circle radius, d represents that adjacent two launch winding frontier distances;
The working point frequency of the Sofe Switch control signal that controller 1-4-2 at different levels produces is f
0, the resonance frequency of complex resonant circuit 1-3-2 at different levels is f
k, and meet f
k=f
0;
Movable equipment side receiving end system 2 comprises reception resonant circuit 2-1, hf rectifier 2-2, DC bus 2-3, DC-DC converter 2-4, DC-AC converter 2-5, on-vehicle battery group 2-6 and vehicle-mounted alternating current machine 2-7;
Receive resonant circuit 2-1 and receive in net side feeder ear system 1 magnetic energy launched winding 1-3-3 and transmit, and magnetic energy is converted to the electric flux of alternating current form, DC bus 2-3 is exported to after being rectified into direct current by hf rectifier 2-2, DC-DC converter 2-4 and DC-AC converter 2-5 is connected in parallel on DC bus 2-3, the energy received during movable equipment motion drives vehicle-mounted alternating current machine 2-7 by DC-AC converter 2-5, and the energy received when movable equipment enters anchor point is that on-vehicle battery group 2-6 charges by DC-DC converter 2-4;
Receive on resonant circuit 2-1 and be provided with reception winding 2-1-1, receive winding 2-1-1 and receive in net side feeder ear system 1 magnetic energy launched winding 1-3-3 and transmit, the geometric center position of reception winding 2-1-1 is provided with magnetic markers 2-1-2;
Produce magnetic field resonance by the transmitting winding 1-3-3 on the two-stage sectional guide rail 1-3 opened with the reception winding 2-1-1 in movable equipment side receiving end system 2 to be coupled, complete dynamic radio and power.
In present embodiment, by setting threshold value, ensure continuity and the high efficiency of delivery of electrical energy.
In present embodiment, in the motion process of movable equipment, switched the operating state of high-frequency inverter 1-3-1 by Sofe Switch, remain that the below of movable equipment side receiving end system 2 only has 2 to launch winding 1-3-3 work, effectively avoid the impact of electromagnetic radiation.
In present embodiment, the energy received when movable equipment moves drives vehicle-mounted alternating current machine 2-7 by DC-AC converter 2-5, the energy received when movable equipment enters anchor point is that on-vehicle battery group 2-6 charges by DC-DC converter 2-4, can realize powering to two load wireless of battery and motor.
In present embodiment, because Magnetic Sensor 1-4-1 is arranged on adjacent two geometric center positions of launching between winding 1-3-3, the impact of alternating magnetic field on Magnetic Sensor 1-4-1 that Energy Transfer produces all concentrates on vertical axis, thus when receiving winding 2-1-1 and moving with movable equipment, exporting change by the Magnetic Sensor 1-4-1 trunnion axis of net side feeder ear system 1 detects the change of magnetic field strength of magnetic markers 2-1-2 in the movable equipment direction of motion, and then realizes the accurate location to movable equipment.
In present embodiment, Magnetic Sensor 1-4-1 also can be arranged on the geometric center position of each transmitting winding 1-3-3, Magnetic Sensor 1-4-1 can also be arranged to be made up of other pressure, laser, infrared sensor, can realize the detection to movable equipment position equally.
In present embodiment, the transmitting winding 1-3-3 structure in sectional guide rail 1-3 at different levels is all identical with size, and it is also identical to launch frontier distance between winding, to produce balanced field intensity.
In present embodiment, magnetic markers 2-1-2 is arranged on the geometric center position receiving winding 2-1-1, for changing the change of magnetic field strength of travel direction in movable equipment motion process.
In present embodiment, f
0and f
kmeet f
k=f
0, f
k=f
0value be 20kHz, 85kHz or 100kHz.
Embodiment two: present embodiment is described further execution mode one, described frequency rectifier 1-1 comprises full-wave bridge rectifier circuit and filter capacitor C
pf, the input of full-wave bridge rectifier circuit connects electrical network, and the output of full-wave bridge rectifier circuit is connected on high power DC bus 1-2, filter capacitor C
pfon the output of full-wave bridge rectifier circuit in parallel.
Embodiment three: present embodiment is described further execution mode one, described high-frequency inverter 1-3-1 is four power tube full bridge inverters.
Embodiment four: illustrate that present embodiment present embodiment is described further execution mode three below in conjunction with Fig. 3, arranges the size receiving winding 2-1-1, the size of launching winding 1-3-3 and transmitting winding 1-3-3 spacing and is respectively:
Wherein: w is for receiving winding width, and l is for receiving winding length, w and l determines according to movable equipment chassis size, and it is square for launching winding, and r is its inscribed circle radius;
According to Kirchhoff's law, system equivalent AC impedance power output P
acbe expressed as with efficiency of transmission η:
Wherein: M
1for first that opens is launched winding and the mutual inductance receiving winding, M
2for second that opens is launched winding and the mutual inductance receiving winding, V
1for net side electric power system high-frequency inverter fundamental voltage output of voltage effective value, R
acfor the load of movable equipment equivalent AC, R
pk1,2and R
sfor constant, represent respectively and receive winding and launch winding internal resistance.In present embodiment, receive the size of winding 2-1-1, the size of launching winding 1-3-3 and transmitting winding 1-3-3 spacing by setting and produce balanced field intensity (mutual inductance is stablized), effectively avoid the appearance of electromagnetic radiation, improve the stability that system dynamic radio is powered, due to mutual inductance M simultaneously
1+ M
2constant, therefore power P
acstablize with efficiency eta.
The optimum configurations of present embodiment ensure that two transmitting winding 1-3-3 of unlatching are balanced with the magnetic field that reception winding 2-1-1 is formed, and namely mutual inductance is constant, achieves maximum transmitted efficiency simultaneously.
In present embodiment, Sofe Switch working points at different levels frequency f
0with output fundamental voltage effective value V
1identical.
Embodiment five: present embodiment is described further execution mode three, complex resonant circuit 1-3-2 comprises compensating inductance L
pk, 1, the first resistance R
pk, 1, the second resistance R
pk, 2, the first building-out capacitor C
pk, 1with the second building-out capacitor C
pk, 2, the first resistance R
pk, 1for compensating inductance L
pk, 1internal resistance, the second resistance R
pk, 2for launching winding L
pk, 2internal resistance, whole parameters of complex resonant circuit 1-3-2 at different levels are all identical, that is:
L
pk,1＝R
pk,1＝R
pk,2＝C
pk,1＝C
pk,2；
First building-out capacitor C
pk, 1with compensating inductance L
pk, 1resonance, meets:
Second building-out capacitor C
pk, 2produce resonance with transmitting winding 1-3-3, meet:
Wherein: L
pk, 2represent and launch winding 1-3-3.
In present embodiment, complex resonant circuit 1-3-2, π type T-shaped by other can also compensate resonant circuit and forms.
Embodiment six: present embodiment is described further execution mode three, the internal resistance of described reception winding 2-1-1 is resistance R
s, building-out capacitor C
sproduce resonance with reception winding 2-1-1, resonance frequency is f
s, and equal the Sofe Switch working point frequency f of high-frequency inverter 1-3-1
0, i.e. f
s=f
0, and meet:
Wherein: L
srepresent and receive winding 2-1-1.
Embodiment seven: present embodiment is described further execution mode one, described Magnetic Sensor 1-4-1 is high sensitivity magnetic sensor.
Embodiment eight: present embodiment is described further execution mode one, the transmitting winding 1-3-3 of sectional guide rail 1-3 at different levels all adopts independent high-frequency inverter 1-3-1 to carry out delivery of electrical energy; High-frequency inverter 1-3-1 at different levels is connected in parallel on same high power DC bus 1-2.
Embodiment nine: based on the dynamic radio method of supplying power to of the movable equipment dynamic radio electric supply installation of the balanced field intensity of sectional guide rail described in present embodiment, the detailed process of this dynamic radio method of supplying power to is:
Step 1, by the Magnetic Sensor 1-4-1 in net side feeder ear system 1 with launch winding 1-3-3 and be arranged on below ground, the remaining part in net side feeder ear system 1 is arranged on above the ground, and movable equipment side receiving end system 2 is arranged in electric motor car;
The responsive border of step 2, setting Magnetic Sensor 1-4-1 is:
wherein: r represents transmitting winding inscribed circle radius, d represents that adjacent two launch winding frontier distances;
Step 3, Magnetic Sensor 1-4-1 measure the changing value that when electric motor car moves, trunnion axis exports, obtain magnetic field intensity, according to the responsive border that step 2 sets, electric motor car is positioned, open the two-stage sectional guide rail 1-3 immediately below movable equipment side receiving end system 2, all the other n-2 level sectional guide rails 1-3 is in closed condition;
Step 4, controller 1-4-2 produce Sofe Switch control signal according to the framing signal of Magnetic Sensor 1-4-1, and the working point frequency of Sofe Switch control signal is f
0, the resonance frequency of setting complex resonant circuit 1-3-2 is f
k, and meet f
k=f
0;
Step 5, Sofe Switch control signal generate drive singal through driver for isolating 1-4-3 electrical isolation with after driving, and drive singal controls the break-make opening two-stage sectional guide rail 1-3 medium-high frequency inverter 1-3-1;
Electric energy transfers in air dielectric by transmitting winding 1-3-3 at the same level by step 6, the high-frequency inverter 1-3-1 opened;
Reception winding 2-1-1 in step 7, movable equipment side receiving end system 2 produces magnetic field resonance with the transmitting winding 1-3-3 in the sectional guide rail 1-3 opened and is coupled, and receives winding 2-1-1 and receives the magnetic energy launching winding 1-3-3 transmission;
The energy that step 8, electric motor car receive when moving drives vehicle-mounted alternating current machine 2-7 to work by DC-AC converter 2-5, and the energy received when electric motor car enters anchor point is that on-vehicle battery group 2-6 charges by DC-DC converter 2-4, completes dynamic radio and powers.
In the present invention, in the process of movable equipment motion, remain that only having two of receiving immediately below winding to launch winding runs, and effectively prevent electromagnetic radiation, two transmitting between winding and reception winding forms equivalent magnetic field, the stability that the system dynamic radio of improve is powered simultaneously.The two-stage sectional guide rail of each unlatching, its drive singal, high-frequency inverter voltage, launch the frequency of winding current waveform, amplitude, phase place are identical, adjacent like this two magnetic fields of launching after windings superposition are balanced field intensity.
Below in conjunction with embodiment 1, provide the process that the method realizes the transmission of dynamic radio electric energy.
Embodiment 1: as shown in Figure 1, for kth level sectional guide rail, when Magnetic Sensor k does not detect movable equipment, high-frequency inverter k no-output voltage, now launch no current on winding k, there is no outside transferring energy, thus inefficent loss and electromagnetic radiation.When Magnetic Sensor k detects that movable equipment is through out-of-date, controller k and k-1 produces four road synchronous control signals immediately, generates drive singal G respectively after driver for isolating k and k-1
k, 1, G
k, 2, G
k, 3, G
k, 4and G
k-1,1, G
k-1,2, G
k-1,3, G
k-1,4, synchronous high-frequency inverter k and k-1 that drive works.As shown in Figure 4, the drive singal of kth level sectional guide rail and kth-1 grade of drive singal same-phase, and the output voltage u of high-frequency inverter k and k-1
kand u
k-1equal.Now launch on winding k and k-1 and all have electric current, and launch current i on winding k
kwith current i on transmitting winding k-1
k-1equal and opposite in direction, phase place is identical, can simultaneously to reception winding transferring energy.Finally be opened 2 launch windings and produce magnetic field resonance by the reception winding in electric system and be coupled, complete the wireless transmission of energy.
Below in conjunction with embodiment 2, illustrate and how to produce equivalent magnetic field to ensure the stability that dynamic radio electric energy transmits and efficiency uniformity.
Embodiment 2: in the present embodiment, receive the square coil that winding is the length of side 20 × 40cm, the number of turn is 14, launch the square coil that winding is the length of side 20 × 20cm, the number of turn is also 14, each transmitting winding border spacing is 14cm, receives winding and highly moves with speed 2cm/ms 20cm directly over transmitting winding.As shown in Figure 5, the two of unlatching launch winding and receive the total mutual inductance M of winding
1+ M
2all the time constant in 8.2 μ H in reception winding moving process, finally achieve equivalent magnetic field.As shown in Figure 6, when movable equipment is directly over multiple transmitting winding during continuous moving, power output continous-stable, efficiency of transmission all-the-time stable more than 85%, the stability that the system dynamic radio of ensure that is powered and high efficiency.
As shown in Figure 7, because in movable equipment moving process, system remains that only having two immediately below it to launch winding runs, and effectively prevent electromagnetic radiation and occurs, two transmitting between winding forms equivalent magnetic field simultaneously, ensure that uniformity and the stability of Energy Transfer.
Described hf rectifier 2-2 is by full-wave bridge rectifier circuit and filter capacitor C
sfcomposition, also can be made up of other bridge-types or controlled rectification circuit, realize alternating current and change direct current into.Described DC-DC converter 2-4 is made up of Buck circuit, connect on-vehicle battery group 2-6, described DC-AC converter 2-5 is made up of full bridge inverter, connect vehicle-mounted alternating current machine 2-7, its key is: DC-DC converter 2-4 and DC-AC converter 2-5 is connected in parallel on the output of hf rectifier 2-2 by DC bus 2-3, can realize a kind of wireless power to the two load of battery/motor.Described DC-DC converter 2-4 also can be made up of Boost, Buck-Boost or Boost-Buck circuit etc., and described DC-AC converter 2-5 also can be made up of half-bridge inversion circuit, can realize the wireless power to power side load equally.
Claims (9)
1. based on the movable equipment dynamic radio electric supply installation of the balanced field intensity of sectional guide rail, it is characterized in that: this movable equipment dynamic radio electric supply installation comprises net side feeder ear system (1) and movable equipment side receiving end system (2), net side feeder ear system (1) by Energy Transfer to movable equipment side receiving end system (2);
Net side feeder ear system (1) comprises frequency rectifier (1-1), high power DC bus (1-2), n level sectional guide rail (1-3) and n level position detection control circuit (1-4), and n is positive integer; The electric energy of electrical network is delivered on high power DC bus (1-2) by frequency rectifier (1-1);
N level sectional guide rail (1-3) structure is identical, includes high-frequency inverter (1-3-1), complex resonant circuit (1-3-2) and launches winding (1-3-3); High-frequency inverter (1-3-1) at different levels is all connected in parallel on high power DC bus (1-2), electric energy is exported to complex resonant circuit (1-3-2) by high-frequency inverter (1-3-1), then transfers in air dielectric by launching winding (1-3-3);
N level position detection control circuit (1-4) structure is identical, include Magnetic Sensor (1-4-1), controller (1-4-2) and driver for isolating (1-4-3), Magnetic Sensor (1-4-1) is arranged on adjacent two centers of launching between winding (1-3-3), Magnetic Sensor (1-4-1) detects magnetic field intensity when movable equipment moves, according to threshold value, movable equipment is positioned, controller (1-4-2) produces Sofe Switch control signal according to the framing signal of Magnetic Sensor (1-4-1), Sofe Switch control signal generates drive singal through driver for isolating (1-4-3) electrical isolation with after driving, drive singal controls the break-make of corresponding high-frequency inverter (1-3-1),
Described threshold value is the responsive border of the Magnetic Sensor (1-4-1) of setting, by setting threshold value, open the two-stage sectional guide rail (1-3) immediately below movable equipment side receiving end system (2), all the other n-2 level sectional guide rails (1-3) are in closed condition;
The responsive border of described Magnetic Sensor (1-4-1) is set as:
wherein: r represents transmitting winding inscribed circle radius, d represents that adjacent two launch winding frontier distances;
The working point frequency of the Sofe Switch control signal that controller at different levels (1-4-2) produces is f
0, the resonance frequency of complex resonant circuit at different levels (1-3-2) is f
k, and meet f
k=f
0;
Movable equipment side receiving end system (2) comprises reception resonant circuit (2-1), hf rectifier (2-2), DC bus (2-3), DC-DC converter (2-4), DC-AC converter (2-5), on-vehicle battery group (2-6) and vehicle-mounted alternating current machine (2-7);
Receive resonant circuit (2-1) and receive in net side feeder ear system (1) magnetic energy launched winding (1-3-3) and transmit, and magnetic energy is converted to the electric flux of alternating current form, DC bus (2-3) is exported to after being rectified into direct current by hf rectifier (2-2), DC-DC converter (2-4) and DC-AC converter (2-5) are connected in parallel on DC bus (2-3), the energy received during movable equipment motion drives vehicle-mounted alternating current machine (2-7) by DC-AC converter (2-5), the energy that movable equipment receives when entering anchor point is on-vehicle battery group (2-6) charging by DC-DC converter (2-4),
Receive on resonant circuit (2-1) and be provided with reception winding (2-1-1), receive winding (2-1-1) and receive in net side feeder ear system (1) magnetic energy launched winding (1-3-3) and transmit, the geometric center position receiving winding (2-1-1) is provided with magnetic markers (2-1-2);
Produce magnetic field resonance by the transmitting winding (1-3-3) on the two-stage sectional guide rail (1-3) opened with the reception winding (2-1-1) in movable equipment side receiving end system (2) to be coupled, complete dynamic radio and power.
2. the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail according to claim 1, is characterized in that: described frequency rectifier (1-1) comprises full-wave bridge rectifier circuit and filter capacitor C
pf, the input of full-wave bridge rectifier circuit connects electrical network, and the output of full-wave bridge rectifier circuit is connected on high power DC bus (1-2), filter capacitor C
pfon the output of full-wave bridge rectifier circuit in parallel.
3. the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail according to claim 1, is characterized in that: described high-frequency inverter (1-3-1) is four power tube full bridge inverters.
4. the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail according to claim 3, is characterized in that: arrange the size receiving winding (2-1-1), the size of launching winding (1-3-3) and transmitting winding (1-3-3) spacing and be respectively:
Wherein: w is for receiving winding width, and l is for receiving winding length, w and l determines according to movable equipment chassis size, and it is square for launching winding, and r is its inscribed circle radius;
According to Kirchhoff's law, system equivalent AC impedance power output P
acbe expressed as with efficiency of transmission η:
Wherein: M
1for first that opens is launched winding and the mutual inductance receiving winding, M
2for second that opens is launched winding and the mutual inductance receiving winding, V
1for net side electric power system high-frequency inverter fundamental voltage output of voltage effective value, R
acfor the load of movable equipment equivalent AC, R
pk1,2and R
sfor constant, represent respectively and receive winding and launch winding internal resistance.
5. the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail according to claim 3, is characterized in that: complex resonant circuit (1-3-2) comprises compensating inductance L
pk, 1, the first resistance R
pk, 1, the second resistance R
pk, 2, the first building-out capacitor C
pk, 1with the second building-out capacitor C
pk, 2, the first resistance R
pk, 1for compensating inductance L
pk, 1internal resistance, the second resistance R
pk, 2for launching winding L
pk, 2internal resistance, whole parameters of complex resonant circuit (1-3-2) at different levels are all identical, that is:
L
pk,1＝R
pk,1＝R
pk,2＝C
pk,1＝C
pk,2；
First building-out capacitor C
pk, 1with compensating inductance L
pk, 1resonance, meets:
Second building-out capacitor C
pk, 2produce resonance with transmitting winding (1-3-3), meet:
Wherein: L
pk, 2represent and launch winding (1-3-3).
6. the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail according to claim 3, is characterized in that: the internal resistance of described reception winding (2-1-1) is resistance R
s, building-out capacitor C
sproduce resonance with reception winding (2-1-1), resonance frequency is f
s, and equal the Sofe Switch working point frequency f of high-frequency inverter (1-3-1)
0, i.e. f
s=f
0, and meet:
Wherein: L
srepresent and receive winding (2-1-1).
7. the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail according to claim 1, is characterized in that: described Magnetic Sensor (1-4-1) is high sensitivity magnetic sensor.
8. the movable equipment dynamic radio electric supply installation based on the balanced field intensity of sectional guide rail according to claim 1, is characterized in that: the transmitting winding (1-3-3) of sectional guide rail at different levels (1-3) all adopts independent high-frequency inverter (1-3-1) to carry out delivery of electrical energy; High-frequency inverter at different levels (1-3-1) is connected in parallel on same high power DC bus (1-2).
9. based on described in claim 1 based on the dynamic radio method of supplying power to of the movable equipment dynamic radio electric supply installation of the balanced field intensity of sectional guide rail, it is characterized in that: the detailed process of this dynamic radio method of supplying power to is:
Step 1, by the Magnetic Sensor (1-4-1) netted in side feeder ear system (1) and launch winding (1-3-3) be arranged on below ground, remaining part in net side feeder ear system (1) is arranged on above the ground, and movable equipment side receiving end system (2) is arranged in electric motor car;
The responsive border of step 2, setting Magnetic Sensor (1-4-1) is:
wherein: r represents transmitting winding inscribed circle radius, d represents that adjacent two launch winding frontier distances;
Step 3, Magnetic Sensor (1-4-1) measure the changing value that when electric motor car moves, trunnion axis exports, obtain magnetic field intensity, according to the responsive border that step 2 sets, electric motor car is positioned, open the two-stage sectional guide rail (1-3) immediately below movable equipment side receiving end system (2), all the other n-2 level sectional guide rails (1-3) are in closed condition;
Step 4, controller (1-4-2) produce Sofe Switch control signal according to the framing signal of Magnetic Sensor (1-4-1), and the working point frequency of Sofe Switch control signal is f
0, the resonance frequency of setting complex resonant circuit (1-3-2) is f
k, and meet f
k=f
0;
Step 5, Sofe Switch control signal generate drive singal through driver for isolating (1-4-3) electrical isolation with after driving, and drive singal controls the break-make opening two-stage sectional guide rail (1-3) medium-high frequency inverter (1-3-1);
Electric energy transfers in air dielectric by transmitting winding (1-3-3) at the same level by step 6, the high-frequency inverter (1-3-1) opened;
Reception winding (2-1-1) in step 7, movable equipment side receiving end system (2) produces magnetic field resonance with the transmitting winding (1-3-3) in the sectional guide rail opened (1-3) and is coupled, and receives winding (2-1-1) and receives the magnetic energy launched winding (1-3-3) and transmit;
The energy that step 8, electric motor car receive when moving drives vehicle-mounted alternating current machine (2-7) to work by DC-AC converter (2-5), the energy that electric motor car receives when entering anchor point is on-vehicle battery group (2-6) charging by DC-DC converter (2-4), completes dynamic radio and powers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130442.2A CN104682581B (en) | 2015-03-24 | 2015-03-24 | Movable equipment dynamic radio electric supply installation and dynamic radio method of supplying power to thereof based on sectional guide rail equilibrium field intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130442.2A CN104682581B (en) | 2015-03-24 | 2015-03-24 | Movable equipment dynamic radio electric supply installation and dynamic radio method of supplying power to thereof based on sectional guide rail equilibrium field intensity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104682581A true CN104682581A (en) | 2015-06-03 |
| CN104682581B CN104682581B (en) | 2016-11-09 |
Family
ID=53317305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510130442.2A Active CN104682581B (en) | 2015-03-24 | 2015-03-24 | Movable equipment dynamic radio electric supply installation and dynamic radio method of supplying power to thereof based on sectional guide rail equilibrium field intensity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104682581B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917302A (en) * | 2015-07-08 | 2015-09-16 | 重庆大学 | Pair-embedded energy emission coil of wireless power supply system of electric car, design method thereof, and coil system |
| CN105406563A (en) * | 2015-11-24 | 2016-03-16 | 东南大学 | Segmented transmitter coil switching method for dynamic wireless power supply system of electrical vehicle |
| CN106981870A (en) * | 2016-01-19 | 2017-07-25 | 福特全球技术公司 | Perceived control answers the operation of the electric vehicle travelled on road to influence power network |
| CN107196391A (en) * | 2017-06-29 | 2017-09-22 | 北京航空航天大学 | A kind of wireless energy transfer control device in moving process |
| CN107785973A (en) * | 2017-11-16 | 2018-03-09 | 广州大学 | A kind of wireless charging moving guide rail device and its control method |
| CN108448740A (en) * | 2018-03-13 | 2018-08-24 | 武汉理工大学 | Dynamic radio energy transfer circuit system and its real-time switching method of primary side multi-coil |
| US10103647B2 (en) | 2016-08-17 | 2018-10-16 | Industrial Technology Research Institute | Sensorless measurement method and device for filter capacitor current by using a state observer |
| CN106314187B (en) * | 2016-09-14 | 2018-11-06 | 东南大学 | A kind of control method of the short segmentation dynamic radio power supply system of electric vehicle |
| CN109572458A (en) * | 2018-12-25 | 2019-04-05 | 华北电力大学（保定） | A kind of two-band electric car dynamic radio charging system and its guide rail switching method |
| 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 |
| CN113300480A (en) * | 2021-06-07 | 2021-08-24 | 哈尔滨工业大学 | Two-phase X-shaped dynamic wireless power supply guide rail with strong lateral movement capability and constant received power |
| CN113595260A (en) * | 2021-07-05 | 2021-11-02 | 哈尔滨工业大学 | Integrated guide rail distribution switching power supply topology based on series compensation |
-
2015
- 2015-03-24 CN CN201510130442.2A patent/CN104682581B/en active Active
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917302A (en) * | 2015-07-08 | 2015-09-16 | 重庆大学 | Pair-embedded energy emission coil of wireless power supply system of electric car, design method thereof, and coil system |
| CN105406563A (en) * | 2015-11-24 | 2016-03-16 | 东南大学 | Segmented transmitter coil switching method for dynamic wireless power supply system of electrical vehicle |
| CN105406563B (en) * | 2015-11-24 | 2018-04-24 | 东南大学 | A kind of electric automobile dynamic radio electric power system is segmented transmitting coil switching method |
| CN106981870A (en) * | 2016-01-19 | 2017-07-25 | 福特全球技术公司 | Perceived control answers the operation of the electric vehicle travelled on road to influence power network |
| CN106981870B (en) * | 2016-01-19 | 2021-12-21 | 福特全球技术公司 | Controlling operation of an electric vehicle travelling on an inductive road to influence an electric grid |
| US10103647B2 (en) | 2016-08-17 | 2018-10-16 | Industrial Technology Research Institute | Sensorless measurement method and device for filter capacitor current by using a state observer |
| CN106314187B (en) * | 2016-09-14 | 2018-11-06 | 东南大学 | A kind of control method of the short segmentation dynamic radio power supply system of electric vehicle |
| CN107196391A (en) * | 2017-06-29 | 2017-09-22 | 北京航空航天大学 | A kind of wireless energy transfer control device in moving process |
| CN107785973A (en) * | 2017-11-16 | 2018-03-09 | 广州大学 | A kind of wireless charging moving guide rail device and its control method |
| CN108448740A (en) * | 2018-03-13 | 2018-08-24 | 武汉理工大学 | Dynamic radio energy transfer circuit system and its real-time switching method of primary side multi-coil |
| CN109572458A (en) * | 2018-12-25 | 2019-04-05 | 华北电力大学（保定） | A kind of two-band electric car dynamic radio charging system and its guide rail switching method |
| CN109572458B (en) * | 2018-12-25 | 2024-05-28 | 华北电力大学（保定） | Dynamic wireless charging system of dual-band electric automobile and guide rail switching method thereof |
| 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 |
| CN113300480A (en) * | 2021-06-07 | 2021-08-24 | 哈尔滨工业大学 | Two-phase X-shaped dynamic wireless power supply guide rail with strong lateral movement capability and constant received power |
| CN113300480B (en) * | 2021-06-07 | 2023-03-31 | 哈尔滨工业大学 | Two-phase X-shaped dynamic wireless power supply guide rail with strong lateral movement capability and constant received power |
| CN113595260A (en) * | 2021-07-05 | 2021-11-02 | 哈尔滨工业大学 | Integrated guide rail distribution switching power supply topology based on series compensation |
| CN113595260B (en) * | 2021-07-05 | 2024-03-22 | 哈尔滨工业大学 | Integrated guide rail distribution switching power supply topology circuit based on series compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104682581B (en) | 2016-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104682581B (en) | Movable equipment dynamic radio electric supply installation and dynamic radio method of supplying power to thereof based on sectional guide rail equilibrium field intensity | |
| CN104682580B (en) | The electric automobile dynamic radio electric power system in parallel based on multistage composite resonance structure and use the method for supplying power to that this system realizes | |
| KR102215784B1 (en) | System and method for charging electric vehicles on the road through wireless power transmission | |
| Li et al. | A 3-kW wireless power transfer system for sightseeing car supercapacitor charge | |
| EP2571716B1 (en) | Adaptive wireless energy transfer system | |
| CN103944243B (en) | A kind of induction type non-contact charging device with accurate alignment function used for electric vehicle | |
| CN110293861B (en) | Capacitive coupling type automatic wireless charging system and charging method for electric automobile | |
| CN104734300B (en) | A kind of electric motor car wireless charging circuit and its control method | |
| CN107069873B (en) | Photovoltaic highway induction wireless charging system and charging system of vehicle | |
| CN105634093A (en) | Movable three-dimensional wireless charging device of mobile phones | |
| CN103490465A (en) | Running electrical vehicle wireless charging device based on solar photovoltaic power supply | |
| CN203707844U (en) | Electric-automobile wireless charging control system based on automobile moving direction inspection | |
| CN105356562A (en) | Segmented transmission type electric automobile online dynamic wireless power supply system | |
| CN102035239A (en) | Movable electric automobile wireless charging device | |
| CN109733215B (en) | Highway developments wireless charging system based on solar energy light-storage is integrative | |
| CN201947032U (en) | Movable electric automobile wireless charging unit | |
| CN110970986B (en) | Information sending/receiving device, method and system based on wireless energy transmission | |
| CN106394297A (en) | Non-contact type uninterrupted power supply system and power supply method | |
| CN210212066U (en) | Automatic wireless charging system of capacitive coupling type electric automobile | |
| Rakhymbay et al. | A simulation study on four different compensation topologies in EV wireless charging | |
| CN107093920B (en) | Motor vehicle wireless charging system based on capacitive or inductive coupling | |
| CN206077030U (en) | A kind of wireless charging device of electric bus | |
| CN203423515U (en) | Electric driving automobile wireless charging device based on solar photovoltaic power supply | |
| CN109969008B (en) | Mutual inductance estimation method and system based on AC/DC converter multi-source wireless charging | |
| CN105515210A (en) | Non-contact charging pile, on-board charging device, and charging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |