CN117154962A - Two-phase dynamic wireless power supply system based on salient pole type transmitting guide rail - Google Patents
Two-phase dynamic wireless power supply system based on salient pole type transmitting guide rail Download PDFInfo
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- 238000004804 winding Methods 0.000 claims description 173
- 230000005540 biological transmission Effects 0.000 claims description 14
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- 230000007246 mechanism Effects 0.000 claims description 10
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- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 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
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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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33573—Full-bridge at primary side of an isolation transformer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
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Abstract
The invention provides a two-phase dynamic wireless power supply system based on a salient pole type transmitting guide rail, which comprises a primary side system, namely a ground part, and a secondary side system, namely a vehicle-mounted part. The two-phase dynamic wireless power supply system based on the salient pole type transmitting guide rail has the advantages of strong bipolar magnetic coupling capability, small magnetic leakage, small structural width and the like, and simultaneously has constant power output characteristics, double output power under the same reverse voltage and 40% lower primary side loss under the same output power.
Description
Technical Field
The invention relates to the technical field of dynamic wireless power supply, in particular to a two-phase dynamic wireless power supply system based on a salient pole type transmitting guide rail.
Background
The dynamic wireless power supply technology is derived from a magnetic coupling resonance type wireless power transmission technology, and is a technology of paving a transmitting device under a road, converting electric energy into a high-frequency magnetic field by utilizing an electromagnetic conversion principle, converting the high-frequency magnetic field into electric energy by a vehicle-mounted receiving coil and a power electronic conversion device, and supplying power to an electric automobile in running. Compared with wired charging, wireless charging has the advantages of convenient use, no spark and electric shock hazard, no mechanical abrasion, adaptability to various severe environments and weather, convenient realization of unmanned automatic charging and mobile charging, and the like, and can become a mainstream mode for charging electric automobiles in the future.
At present, various power supply track structures which can be used for dynamic wireless power supply of mobile equipment are proposed by research institutions and can be divided into a long coil type, a small coil array type and a bipolar type according to structures and working modes. Compared with other two types of power supply guide rails, the bipolar type power supply guide rail has the advantages of strong magnetic coupling capability, small magnetic leakage, small structural width and the like, and typical structures comprise an I type, an S type, an N type and the like. However, the bipolar guide rail has power fluctuation and power zero point, and the single-phase system has the problems of low voltage utilization rate, high magnetic core loss and the like in a high-power application environment.
The two-phase dynamic wireless power supply system based on the salient pole type transmitting guide rail has the advantages of strong bipolar magnetic coupling capability, small magnetic leakage, small structural width and the like, and simultaneously has constant power output characteristics, double output power under the same reverse voltage and 40% lower primary side loss under the same output power.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a two-phase dynamic wireless power supply system based on a salient pole type transmitting guide rail.
The invention is realized by the following technical scheme, the invention provides a two-phase dynamic wireless power supply system based on a salient pole type transmitting guide rail, which comprises a primary side system, namely a ground part, and a secondary side system, namely a vehicle-mounted part; the primary side system of the dynamic wireless power supply system consists of an inversion source, a compensation topology and a two-phase emission guide rail, wherein two-phase inversion modules in the inversion source are respectively connected with the compensation topology and the emission coils in series in sequence, and the two-phase emission coils are wound on the same emission guide rail to form a two-phase emission guide rail; the two-phase transmitting guide rails are sequentially paved on a ground section to form a wireless power supply line; the secondary coil is coupled with a corresponding group or adjacent groups of transmitting guide rails to transmit energy;
if the whole guide rail has 2 (N-1) < N less than or equal to 2N magnetic poles, the winding directions of the adjacent two exciting windings of the first phase magnetic pole are opposite in rotation direction, and the winding directions of the adjacent two exciting windings of the second phase magnetic pole are opposite in rotation direction, namely the polarities of the magnetic poles of any two adjacent windings of the two phases of exciting windings are opposite; wherein n is a positive integer.
Further, each magnetic pole is provided with a two-phase excitation winding and a return line; the direction winding screwing direction of the two exciting windings of the No. 2m-1 and No. 2m magnetic poles of the first phase winding is the same, and the direction winding screwing direction of the two exciting windings of 2m+1 and 2m+2 is the same and opposite to the direction winding screwing direction of the exciting windings on the No. 2m-1 magnetic poles; the direction winding screwing direction of the two exciting windings of the 2m and 2m+1 magnetic poles of the second phase winding is the same, and the direction winding screwing direction of the two exciting windings of 2 (m+1) and 2 (m+1) +1 magnetic poles is the same and opposite to the direction winding screwing direction of the exciting winding on the 2m magnetic pole; wherein m is a positive integer, and m is less than n-1.
Further, there are 2^a-1 magnetic pole non-excitation windings between two windings of each phase, i.e. 2-1 magnetic pole non-windings between two phases; the direction winding rotation directions of two adjacent exciting windings of the first phase magnetic pole are opposite, and the direction winding rotation directions of two adjacent exciting windings of the second phase magnetic pole are opposite, namely the magnetic pole polarities of the magnetic poles of any two adjacent windings of the two phases of exciting windings are opposite.
Further, a receiving end mounted on the mobile device is arranged above the magnetic coupling mechanism of the dynamic wireless power supply system, and a transmitting end guide rail buried under the ground or laid on the ground is arranged below the magnetic coupling mechanism.
Further, in the magnetic coupling mechanism, the magnetic pole distance is T, and the length L of the outer side of the outermost turn of the receiving coil winding S1 Inner side length L of innermost turn of receiving coil winding S2 Receiving coil intermediate turn length ls= (L S1 +L S2 ) And/2, the transmission distance, namely the distance A from the lower surface of the magnetic core of the receiving end to the upper surface of the magnetic core of the transmitting end, is more than or equal to 0.1T and less than or equal to 0.5T.
Further, the low-frequency rectification module in the inversion source rectifies the electric energy of the power grid into direct current through an uncontrolled rectification or controllable rectification mode, the filtering module adopts C or RC filtering topology to realize constant-voltage output, and the DCDC has the function of adjusting output voltage to realize adjustment of output power.
Further, the inversion source is composed of two inversion modules, namely two H-bridge inversion topologies which are different by 90 degrees; or a three-phase H bridge with a module, namely an adjacent bridge arm, which is different by 90 degrees, and an H bridge structure with a single H bridge combined with a midpoint capacitor and two bridge arms which are different by 90 degrees.
The invention has the beneficial effects that:
the two-phase dynamic wireless power supply system based on the salient pole type transmitting guide rail has the advantages of strong bipolar magnetic coupling capability, small magnetic leakage, small structural width and the like, and simultaneously has constant power output characteristics, double output power under the same reverse voltage and 40% lower primary side loss under the same output power.
Drawings
FIG. 1 is a basic block diagram of a two-phase dynamic wireless power supply system;
FIG. 2 is a basic structural diagram of a two-phase dynamic wireless power supply magnetic coupling mechanism;
FIG. 3 is a diagram of main structural parameters of a two-phase dynamic wireless electromagnetic coupling mechanism;
FIG. 4 is an overall block diagram of a two-phase salient-pole type launching rail;
FIG. 5 is a basic block diagram of a two-phase salient-pole type launching rail;
FIG. 6 is a block diagram of two-phase transmitting rail winding mode embodiment 1-module 11;
fig. 7 shows an inversion topology according to embodiment 1: adopting a structure of combining 2H bridges with a T-S compensation topology and corresponding switches and an output waveform diagram;
fig. 8 shows an inversion topology according to embodiment 2: adopting a structure of combining 2H bridges with an S-S compensation topology and corresponding switches and an output waveform diagram;
fig. 9 shows an inversion topology according to embodiment 3: adopting a structure of combining a single H bridge with a midpoint capacitor and a T-S compensation topology and a corresponding switch and an output waveform diagram;
fig. 10 shows an inversion topology according to embodiment 4: adopting a three-phase bridge and midpoint capacitor combined T-S compensation topological structure and corresponding switches and an output waveform diagram;
fig. 11 shows a magnetic pole and winding structure according to embodiment 2 of a two-phase transmission rail winding system.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Description of related terms:
wireless power transmission: and carrying out electric energy transmission in a non-electric cable and non-contact mode.
Dynamic wireless power supply: during the moving process of the mobile equipment, a wireless power transmission technology is used for wirelessly supplying power to the equipment; the power supply objects are a battery (charging) and a motor (power supply).
Magnetic coupling mechanism: a set of structures for generating magnetic field energy and receiving magnetic field energy for transmitting electrical energy in a non-contact manner.
Biphase system: a dynamic wireless power supply system adopting a two-phase excited inversion source and a two-phase emission guide rail.
Guide rail/firing end guide rail: magnetic field energy generating devices buried or laid below the ground.
Biphase transmitting guide rail: the magnetic field energy generating device is provided with two energy transmission channels and can be respectively powered to realize two-phase wireless electric energy transmission.
The basic structure of the dynamic wireless power supply system is shown in fig. 1, and is divided into a primary side system (ground part) and a secondary side system (vehicle-mounted part). The primary side system of the dynamic wireless power supply system consists of an inversion source, a compensation topology and a two-phase transmitting guide rail, wherein the two-phase inversion modules are respectively connected with the compensation topology and the transmitting coils in series in sequence, and the two-phase transmitting coils are wound on the same transmitting guide rail to form the two-phase transmitting guide rail. The two-phase transmitting guide rails are sequentially paved on the ground section to form a wireless power supply line. The secondary coil is coupled with a corresponding group or adjacent groups of transmitting guide rails for energy transmission.
Fig. 2 shows a basic structure of a two-phase dynamic wireless electromagnetic coupling mechanism. Wherein the upper part is a receiving end mounted on the mobile equipment, and the lower part is a transmitting end guide rail buried under the ground or laid on the ground.
In order to ensure better constant power characteristics and energy transmission effect, in the magnetic coupling mechanism, the magnetic pole distance is T (generally 0.2-2 m), and the length L of the outer side of the outermost turn of the receiving coil winding S1 Inner side length L of innermost turn of receiving coil winding S2 Receiving coil intermediate turn length ls= (L S1 +L S2 ) And/2, the length Ls of the middle turn of the coil with the receiving end is=2×m×T/3, wherein m is a positive integer, and the transmission distance, namely the distance A from the lower surface of the magnetic core of the receiving end to the upper surface of the magnetic core of the transmitting end, is satisfied, and A is more than or equal to 0.1T and less than or equal to 0.5T.
Example 1
Fig. 4 is a general structure diagram of two-phase salient pole type transmitting guide rails, wherein 1 is a group of transmitting guide rails, each group of transmitting guide rails has the same structure and is sequentially arranged according to the driving direction. The left side and the right side of the driving direction are respectively an exciting coil and a return wire of the two-phase transmitting coil, such as an exciting winding wire and a return wire of the D-phase transmitting coil. The right side is the excitation winding wire and return wire of the Q-phase transmitting coil. The clamps for the magnetic core and the winding are omitted because of not being of a main structure, and are generally made of bakelite, nylon, acrylic and other materials, and have the functions of fixing, supporting and insulating.
Fig. 5 is a basic structure diagram of a two-phase salient-pole type launching guide rail, and 11, 12, 13, 14 are 4 launching guide rail modules (the launching guide rail modules are also called as magnetic poles) forming a group of launching guide rails 1, which are required to be sequentially arranged along the advancing direction in order to ensure the transmission effect. The groupings constituting the firing guide may also be sequentially recursively grouped, such as groups 12, 13, 14, 11 being 1, or groups 13, 14, 11, 12 being one, or groups 14, 11, 12, 13 being one. As shown in fig. 5, each magnetic pole has 1 exciting winding, and the magnetic poles are 11, 12, 13 and 14 in sequence from left to right. If the poles 11 and 13 are defined as D phases, the poles 12 and 14 are Q phases; if the poles 11 and 13 are defined as Q phase, the poles 12 and 14 are defined as D phase.
If the whole guide rail has 2 (N-1) < N less than or equal to 2N (N is a positive integer) magnetic poles, the winding directions of the adjacent two exciting windings of the first phase magnetic pole are opposite in winding direction (clockwise or anticlockwise), and the winding directions of the adjacent two exciting windings of the second phase magnetic pole are opposite in winding direction (clockwise or anticlockwise), namely the polarities of the magnetic poles where any one phase of adjacent two exciting windings of the two phases are located are opposite. Namely, the phase and winding direction relationship of each phase winding on the magnetic pole is shown in table 1.
Table 1 phase and winding rotation relationship of each phase winding on the magnetic pole of embodiment 1
| Magnetic pole | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| First phase | Cis-cis | - | Reverse direction | - | Cis-cis | - | Reverse direction | - |
| Second phase | - | Cis-cis | - | Reverse direction | - | Cis-cis | - | Reverse direction |
In embodiment 1, as shown in fig. 5, the rotation direction of a top view winding of a first winding (No. 11 magnetic poles) of a D-phase winding is clockwise, and the rotation direction of a second winding (No. 13 magnetic poles) of the D-phase winding is counterclockwise; the first winding (No. 12 magnetic pole) of the Q-phase winding is clockwise, and the second winding (No. 14 magnetic pole) of the Q-phase winding is anticlockwise.
If the rotation direction of the top view winding of the first winding (No. 11 magnetic pole) of the D-phase winding is anticlockwise, the second winding (No. 13 magnetic pole) of the D-phase winding is clockwise; the first winding (No. 12 magnetic pole) of the Q-phase winding is anticlockwise, and the second winding (No. 14 magnetic pole) of the Q-phase winding is clockwise.
If the connecting line between the two D-phase exciting windings is always positioned at the left side or the right side of the driving direction, the connecting line between the two Q-phase exciting windings is always positioned at the right side or the left side of the driving direction.
Since the inverter source is often located at the front side or the rear side of the rail running direction, a return line is required for the current to flow back to the inverter source from the tail (omitted in the drawing). The return line of one phase and the connecting line between the exciting windings of the phase are positioned on the same side of the guide rail.
Fig. 6 shows the structure of the two-phase transmitting rail winding mode of embodiment 1-module 11, namely the basic structure of one magnetic pole, each magnetic pole comprises 111-115 structures. Wherein 111 and 112 are phase windings, wherein 111 is the pole field winding and 112 is the return line from the end of the phase winding rail to the inverter source. Wherein 113 and 114 are the connection lines between the windings of the other phase, 113 is the connection line between the excitation windings of the other phase, but not the excitation of the wound windings of the magnetic pole, and 114 is the connection line between the end of the guide rail of the phase winding and the return line of the inversion source at the next magnetic pole. 115 is a magnetic core made of ferromagnetic material, and is typically manganese-zinc ferrite, nickel-zinc ferrite, nanocrystalline, amorphous, silicon steel, etc.
The low-frequency rectification module in the inversion source rectifies the electric energy of the power grid into direct current through an uncontrolled rectification or controllable rectification mode, the filtering module adopts C or RC filtering topology to realize constant-voltage output, and the DCDC has the function of adjusting output voltage to realize adjustment of output power.
The inversion source can be composed of two inversion modules, namely two H-bridge inversion topologies with the phase difference of 90 degrees; the three-phase H bridge can also be formed by a module, namely a three-phase H bridge with the phase difference of 90 degrees between adjacent bridge arms, a single H bridge is combined with a midpoint capacitor, and two bridge arms are different in phase difference of 90 degrees.
The compensation topology can adopt SS, LCC-S, S-LCC, LCC-LCC, T-S compensation and the like. Fig. 7 shows an inversion topology according to embodiment 1: adopting a structure of combining 2H bridges with a T-S compensation topology and corresponding switches and an output waveform diagram; fig. 8 shows an inversion topology according to embodiment 2: adopting a structure of combining 2H bridges with an S-S compensation topology and corresponding switches and an output waveform diagram; fig. 9 shows an inversion topology according to embodiment 3: adopting a structure of combining a single H bridge with a midpoint capacitor and a T-S compensation topology and a corresponding switch and an output waveform diagram; fig. 10 shows an inversion topology according to embodiment 4: and adopting a three-phase bridge and midpoint capacitor combined T-S compensation topological structure and a corresponding switch and an output waveform diagram.
Example 2
Each magnetic pole has two-phase exciting winding and return line. The direction winding rotation directions (clockwise or anticlockwise) of the two exciting windings of the first phase winding, namely 2m-1 (m is a positive integer, m is less than n-1) and the number 2m magnetic pole are the same, and the direction winding rotation directions (clockwise or anticlockwise) of the two exciting windings, namely 2m+1 and 2m+2 are the same and opposite to the direction winding rotation directions (clockwise or anticlockwise) of the exciting windings on the number 2m-1 magnetic pole; the direction winding direction of the two exciting windings of the 2m and 2m+1 magnetic poles of the second phase winding is the same (clockwise or anticlockwise), and the direction winding direction of the 2 (m+1) +1 exciting windings is the same (clockwise or anticlockwise) and opposite to the direction winding direction of the exciting windings on the 2m magnetic poles. Namely, the phase and winding direction relationship of each phase winding on the magnetic pole is shown in table 2.
Table 2 phase and winding rotation relationship of each phase winding on the magnetic pole of embodiment 2
| Magnetic pole | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| First phase | Cis-cis | Cis-cis | Reverse direction | Reverse direction | Cis-cis | Cis-cis | Reverse direction | Reverse direction |
| Second phase | Reverse direction | Cis-cis | Cis-cis | Reverse direction | Reverse direction | Cis-cis | Cis-cis | Reverse direction |
Fig. 11 shows a magnetic pole and winding structure according to embodiment 2 of a two-phase transmission rail winding system. Fig. 11 shows a magnetic pole and a winding structure of winding embodiment 2, in which two windings and a return wire are stacked together after being wound respectively, and wound on the magnetic pole. The stacking mode of the windings is unlimited, namely the D-phase winding is always positioned above, and the Q-phase winding is positioned below; the Q phase winding can be always positioned above, and the D phase winding can be positioned below; some D-phase windings may be located above and some Q-phase windings may be located below. Each turn of wires of the two-phase excitation winding can be wound in turn, namely, after winding 1 layer of D-phase winding, winding 1 layer of Q-phase winding; then winding 1 layer of D phase winding and winding 1 layer of Q phase winding; and (5) winding sequentially. The stacking mode of the windings is unlimited, namely, each layer of coil of the D-phase winding is always positioned above the Q-phase winding; each layer of coil of the D phase winding can be always positioned below the Q phase winding; some layer D phase windings may be located above and some layer Q phase windings may be located below.
Example 3
2^a-1 magnetic pole non-excitation windings are arranged between two windings of each phase, namely 2 (a-1) -1 magnetic pole non-excitation windings are arranged between two phases. The direction winding rotation directions (clockwise or anticlockwise) of the adjacent two exciting windings of the first phase magnetic pole are opposite, and the direction winding rotation directions (clockwise or anticlockwise) of the adjacent two exciting windings of the second phase magnetic pole are opposite, namely the magnetic pole polarities of the magnetic poles where any two adjacent windings of two phases of exciting windings are located are opposite. a=1, i.e. winding method 1 (example 1); a=2 is shown in table 3.
TABLE 3 phase and winding rotation relationship of each phase winding on the magnet of embodiment 3
| Magnetic pole | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| First phase | Cis-cis | Reverse direction | ||||||
| Second phase | Cis-cis | Reverse direction |
Since there is actually no magnetic pole of winding in this way, the leakage flux is increased, and the coupling effect of the system is reduced, this solution is inferior to embodiment 2 in which the a-time pole pitch is increased.
Claims (7)
1. The two-phase dynamic wireless power supply system based on the salient pole type transmitting guide rail is characterized by comprising a primary side system, namely a ground part, and a secondary side system, namely a vehicle-mounted part; the primary side system of the dynamic wireless power supply system consists of an inversion source, a compensation topology and a two-phase emission guide rail, wherein two-phase inversion modules in the inversion source are respectively connected with the compensation topology and the emission coils in series in sequence, and the two-phase emission coils are wound on the same emission guide rail to form a two-phase emission guide rail; the two-phase transmitting guide rails are sequentially paved on a ground section to form a wireless power supply line; the secondary coil is coupled with a corresponding group or adjacent groups of transmitting guide rails to transmit energy;
if the whole guide rail has 2 (N-1) < N less than or equal to 2N magnetic poles, the winding directions of the adjacent two exciting windings of the first phase magnetic pole are opposite in rotation direction, and the winding directions of the adjacent two exciting windings of the second phase magnetic pole are opposite in rotation direction, namely the polarities of the magnetic poles of any two adjacent windings of the two phases of exciting windings are opposite; wherein n is a positive integer.
2. The dynamic wireless power supply system of claim 1, wherein: each magnetic pole is provided with a two-phase excitation winding and a return line; the direction winding screwing direction of the two exciting windings of the No. 2m-1 and No. 2m magnetic poles of the first phase winding is the same, and the direction winding screwing direction of the two exciting windings of 2m+1 and 2m+2 is the same and opposite to the direction winding screwing direction of the exciting windings on the No. 2m-1 magnetic poles; the direction winding screwing direction of the two exciting windings of the 2m and 2m+1 magnetic poles of the second phase winding is the same, and the direction winding screwing direction of the two exciting windings of 2 (m+1) and 2 (m+1) +1 magnetic poles is the same and opposite to the direction winding screwing direction of the exciting winding on the 2m magnetic pole; wherein m is a positive integer, and m is less than n-1.
3. The dynamic wireless power supply system of claim 1, wherein: 2^a-1 magnetic pole non-excitation windings are arranged between two windings of each phase, namely 2 (a-1) -1 magnetic pole non-excitation windings are arranged between two phases; the direction winding rotation directions of two adjacent exciting windings of the first phase magnetic pole are opposite, and the direction winding rotation directions of two adjacent exciting windings of the second phase magnetic pole are opposite, namely the magnetic pole polarities of the magnetic poles of any two adjacent windings of the two phases of exciting windings are opposite.
4. The dynamic wireless power supply system of claim 1, wherein: the magnetic coupling mechanism of the dynamic wireless power supply system is provided with a receiving end mounted on the mobile equipment above, and a transmitting end guide rail buried under the ground or laid on the ground below.
5. The dynamic wireless power supply system of claim 4, wherein: in the magnetic coupling mechanism, the magnetic pole distance is T, and the length L of the outer side of the outermost turn of the receiving coil winding S1 Receiving coil is woundInner length L of innermost turn of group S2 Receiving coil intermediate turn length ls= (L S1 +L S2 ) And/2, the transmission distance, namely the distance A from the lower surface of the magnetic core of the receiving end to the upper surface of the magnetic core of the transmitting end, is more than or equal to 0.1T and less than or equal to 0.5T.
6. The dynamic wireless power supply system of claim 5, wherein: the low-frequency rectification module in the inversion source rectifies the electric energy of the power grid into direct current through an uncontrolled rectification or controllable rectification mode, the filtering module adopts C or RC filtering topology to realize constant-voltage output, and the DCDC has the function of adjusting output voltage to realize adjustment of output power.
7. The dynamic wireless power supply system of claim 1, wherein: the inversion source consists of two inversion modules
The method comprises the steps of forming two H-bridge inversion topologies with a phase difference of 90 degrees; or a three-phase H-bridge with a phase difference of 90 degrees between adjacent bridge arms,
the single H-bridge is combined with a midpoint capacitor, and the two bridge arms are different by 90 degrees.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220212558A1 (en) * | 2021-01-06 | 2022-07-07 | Toyota Jidosha Kabushiki Kaisha | Power supply device, power supply program, and power supply control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220212558A1 (en) * | 2021-01-06 | 2022-07-07 | Toyota Jidosha Kabushiki Kaisha | Power supply device, power supply program, and power supply control system |
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