CN112821579A - Constant-pressure energy feeding device - Google Patents
Constant-pressure energy feeding device Download PDFInfo
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- CN112821579A CN112821579A CN202110214234.6A CN202110214234A CN112821579A CN 112821579 A CN112821579 A CN 112821579A CN 202110214234 A CN202110214234 A CN 202110214234A CN 112821579 A CN112821579 A CN 112821579A
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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
- H02J50/50—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- Power Engineering (AREA)
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Abstract
The invention discloses a constant-pressure energy-supplying device, which comprises: the transmitting module, the relay module and the receiving module are connected in a wireless coupling non-contact mode in sequence, and the transmitting module transmits energy to the relay module and the receiving module in sequence; the relay module comprises a plurality of relay units, and each relay unit is connected in series in a wireless coupling non-contact mode; each relay unit compensates the energy transmitted by the transmitting module or the relay unit of the previous stage through the compensation loop in the relay unit, and simultaneously provides electric energy with the same voltage parameter for all loads. According to the invention, each relay unit is connected in series in a wireless coupling non-contact manner, so that the size of the device is reduced, the transmitting module sequentially transmits energy to the relay module and the receiving module, and each relay unit compensates the received energy through the compensating loop in the relay unit, thereby realizing the purpose of providing constant-voltage electric energy for all loads and improving the capacity and energy transmission output capacity of the device.
Description
Technical Field
The invention relates to the field of power electronics and wireless energy transmission, in particular to a constant-voltage energy supply device.
Background
The wireless energy transmission technology is taken as a research hotspot at present, can support load equipment to obtain electric energy in a non-contact mode, effectively improves the safety, flexibility, reliability and service life of energy obtaining, and has important significance for improving the multi-link intelligent level of a power grid through practical research. However, the current wireless energy transmission technology type is generally that one power supply can only supply power to a single load at the same time.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that one power supply can only supply power to a single load at the same time in the wireless energy transmission technology in the prior art, thereby providing a constant voltage energy supply device.
In order to achieve the purpose, the invention provides the following technical scheme:
the embodiment of the invention provides a constant-pressure energy supply device, which comprises: the wireless energy transmission system comprises a transmitting module, a receiving module and a relay module, wherein the transmitting module, the relay module and the receiving module are sequentially connected in a wireless coupling non-contact mode, and the transmitting module sequentially transmits energy to the relay module and the receiving module; the relay module comprises a plurality of relay units, each relay unit is connected in series in a wireless coupling non-contact mode, and each relay unit and the receiving module are connected with a load; each relay unit compensates the energy transmitted by the transmitting module or the relay unit of the previous stage through the compensation loop in the relay unit, and simultaneously provides electric energy with the same voltage parameter for all loads.
In one embodiment, the transmitting module transmits the initial power to the first-stage relay unit in a wireless coupling non-contact manner; each stage of relay unit obtains energy from the corresponding previous stage of relay unit, the received electric energy is used as initial electric energy, the initial electric energy is used for supplying power to a load connected with the relay unit, the residual electric energy after the load consumes energy is compensated to the level with the same voltage parameter as the initial electric energy, transmitting electric energy is obtained, and the transmitting electric energy is transmitted to the corresponding next stage of relay unit; the last stage of relay unit transmits the transmitted electric energy to the receiving module through non-contact induction, and the receiving module supplies power to a load connected with the receiving module through the transmitted electric energy.
In one embodiment, the transmission module includes: the high-frequency alternating current power supply, the transmitting capacitor and the transmitting inductor are sequentially connected in series to form a series loop; the transmitting capacitor and the transmitting inductor form an electric energy transmitting loop of the high-frequency alternating current power supply.
In one embodiment, each relay unit includes: the receiving compensation circuit and the transmitting compensation circuit are respectively connected with a first end of the load and a first end of the transmitting compensation circuit, and a second end of the receiving compensation circuit is respectively connected with a second end of the load and a second end of the transmitting compensation circuit; the receiving compensation circuit is used for receiving the initial electric energy sent by the transmitting module or the transmitting electric energy sent by the upper-stage relay unit, transmitting the received initial electric energy or the transmitting electric energy to the load and performing primary compensation on the electric energy consumed by the load; the transmitting compensation circuit is used for compensating the electric energy consumed by the load again to obtain transmitting electric energy with the same voltage parameter as the initial electric energy, and transmitting the transmitting electric energy to the next-stage relay unit or the receiving module.
In one embodiment, the receiving module includes: the first end of the first receiving inductor is connected with the second end of the second receiving inductor through the first receiving capacitor and is connected with the first end of the load through the first receiving capacitor and the second receiving capacitor in sequence; the second end of the first receiving inductor is connected with the second end of the second receiving inductor and the second end of the load respectively.
In one embodiment, a receive compensation circuit includes: the first end of the first inductor is connected with the first end of the second inductor through the first capacitor, and is respectively connected with the first end of the load and the first end of the emission compensation circuit through the first capacitor and the second capacitor in sequence; the second end of the first inductor is respectively connected with the second end of the second inductor, the second end of the load and the second end of the emission compensation circuit.
In one embodiment, an emission compensation circuit includes: the first end of the third inductor is connected with the first end of the load through the third capacitor, and the second end of the third inductor is connected with the second end of the load.
In one embodiment, the resonance condition of each stage of the relay unit satisfies the following equation:
in the formula, ω0Representing the operating angular frequency, Li_rRepresenting a first inductance parameter, L, in the relay unit of each stagefiRepresenting a second inductance parameter, C, in the relay unit of each stagei_rRepresenting a first capacitance parameter, C, in the relay unit of each stagefiRepresenting a second capacitance parameter, L, in the relay unit of each stagei_tRepresenting a third inductance parameter, C, in the relay unit of each stagei_tA third capacitance parameter is indicated in each stage of the relay unit, where i is 1,2,3, …, N.
In an embodiment, the power of the load to which the relay unit is connected is varied by varying an inductive parameter and/or a capacitive parameter of the relay unit.
The technical scheme of the invention has the following advantages:
1. according to the constant-current energy transmitting device provided by the invention, the relay module comprises a plurality of relay units, each relay unit is connected in series in a wireless coupling non-contact mode, the size of the device is reduced, the transmitting module sequentially transmits energy to the relay module and the receiving module, and each relay unit compensates the received energy through the compensating circuit in the relay unit, so that constant-voltage electric energy is provided for all loads, and the capacity and the energy transmission output capacity of the device are improved.
2. According to the constant-current energy transmitting device provided by the invention, the compensation loop in the relay unit compensates the received electric energy, and the inductance and the current in the relay unit meet the resonance condition, so that the output characteristics of the constant-current sources with mutually independent loads are realized, and the device cannot influence the power supply of other loads due to the fluctuation of a single-stage load. The compensation loop adopts capacitance and inductance resonance, the inductance coil shape and position errors mainly affect mutual inductance change, the inductance change degree is small, and the shape and position errors have small influence on the constant current characteristic of the output current according to the topological characteristic of the device, so the device has stronger robustness.
3. In the constant-current energy feeding device, the transmitting coil adopts series compensation and the receiving coil adopts capacitance-inductance-capacitance compensation in the compensation loop, and the purpose of improving the power factor can be achieved by compensating the inductance of the coil through the compensation loop.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a composition diagram of a specific example of a constant-pressure energy-supplying device according to an embodiment of the present invention;
fig. 2 is a composition diagram of another specific example of the constant-pressure energy feeding device according to the embodiment of the present invention;
FIG. 3 is a specific circuit structure of the constant voltage energy-supplying device according to the embodiment of the present invention;
fig. 4 is a composition diagram of a specific example of a relay unit according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Examples
An embodiment of the present invention provides a constant voltage energy supply device, which is applied to an application where one power supply device needs to provide constant voltage electrical energy to multiple loads at the same time, as shown in fig. 1, and includes: a transmitting module 1, a receiving module 2 and a relay module 3.
As shown in fig. 1, the transmitting module 1, the relay module 3, and the receiving module 2 of the embodiment of the present invention are sequentially connected in a wireless coupling non-contact manner, and the transmitting module 1 sequentially transmits energy to the relay module 3 and the receiving module 2, that is, the transmitting module 1 first transmits energy to the relay module 3, and then the relay module 3 transmits energy to the receiving module 2.
As shown in fig. 1, the relay module 3 includes a plurality of relay units 31, each relay unit 31 is connected in series in a non-contact manner by wireless coupling, and each relay unit 31 and the receiving module 2 are connected to a load; each relay unit 31 compensates the energy transmitted by the transmitting module 1 or the previous stage to the relay unit through its internal compensation loop, and simultaneously provides the electric energy with the same voltage parameters for all the loads.
The relay module 3 according to the embodiment of the present invention is configured by a plurality of relay units 31, and adjacent relay units 31 are connected in series in a non-contact manner by wireless coupling, such as an electromagnetic coupling manner. The transmitting module 1 firstly transmits energy to each relay unit 31 in turn in a wireless coupling non-contact manner, each relay unit 31 supplies energy to a connected load and compensates the remaining energy, so that the compensated energy is the same as the energy before power supply, and in addition, the relay units 31 meet a resonance condition, thereby realizing constant flow energy of each load.
According to the constant-voltage energy transmission device provided by the embodiment of the invention, the relay module comprises a plurality of relay units, each relay unit is connected in series in a wireless coupling non-contact mode, the size of the device is reduced, the transmitting module sequentially transmits energy to the relay module and the receiving module, and each relay unit compensates the received energy through the compensating circuit in the relay unit, so that constant-voltage electric energy is provided for all loads, and the capacity and the energy transmission output capacity of the device are improved.
In a specific embodiment, the transmitting module 1 transmits the initial power to the first-stage relay unit in a wireless coupling non-contact manner; each stage of relay unit obtains energy from the corresponding previous stage of relay unit, the received electric energy is used as initial electric energy, the initial electric energy is used for supplying power to a load connected with the relay unit, the residual electric energy after the load consumes energy is compensated to the level with the same voltage parameter as the initial electric energy, transmitting electric energy is obtained, and the transmitting electric energy is transmitted to the corresponding next stage of relay unit; the last stage of relay unit transmits the transmitted electric energy to the receiving module 2 through non-contact induction, and the receiving module 2 supplies power to a load connected with the receiving module 2 by using the transmitted electric energy.
Specifically, as shown in fig. 2, the relay unit #1 to the relay unit # N are respectively connected to the loads #1 to # N, the receiving module 2 is connected to the load # N, the transmitting module 1 transmits initial power to the relay unit #1, the relay unit #1 supplies power to the load #1 using the initial power and compensates remaining power after the power supply to a level having the same current parameter as the initial power to obtain transmission power and transmits the transmission power to the relay unit # 2, the relay unit # 2 supplies power to the load # 2 using the initial power and compensates remaining power after the power supply to a level having the same voltage parameter as the initial power to obtain transmission power and transmits the transmission power to the relay unit # 3, and so on until the relay unit # N takes the transmission power received from the relay unit # N-1 as the initial power, the method comprises the steps of supplying power to a load # N by using initial electric energy, compensating the residual electric energy after power supply to a level with the same current parameter as the initial electric energy to obtain transmitting electric energy, sending the transmitting electric energy to a receiving module 2, supplying power to the load # N by using the transmitting electric energy through the receiving module 2, and providing constant-current electric energy for a plurality of loads and constant-current electric energy for a transmitting module 1 according to the method.
In one embodiment, as illustrated in FIG. 3The transmission module 1 comprises: high frequency AC power supply V0And a transmitting capacitor C0_tAnd a transmitting inductor L0_tWherein, a high frequency AC power supply V0And a transmitting capacitor C0_tAnd a transmitting capacitor C0_tAre sequentially connected in series to form a series loop; transmitting capacitor C0_tAnd a transmitting inductor L0_tForm a high-frequency AC power supply V0The power transmitting loop.
High-frequency alternating-current power supply V of the embodiment of the invention0The alternating current can be obtained by converting the alternating current into direct current through an H bridge inverter, or can be obtained by converting the alternating current into the direct current through the H bridge inverter and then performing voltage conversion through circuits such as DC-DC and the like.
In a specific embodiment, as shown in fig. 4, each relay unit 31 includes: a receive compensation circuit 311 and a transmit compensation circuit 312.
As shown in fig. 4, a first terminal of the receiving compensation circuit 311 according to the embodiment of the present invention is connected to a first terminal of the load and a first terminal of the transmitting compensation circuit 312, respectively, and a second terminal of the receiving compensation circuit 311 is connected to a second terminal of the load and a second terminal of the transmitting compensation circuit 312, respectively; the receiving compensation circuit 311 is configured to receive initial electric energy sent by the transmitting module 1, or receive transmitting electric energy sent by a previous-stage relay unit, transmit the received initial electric energy or the transmitting electric energy to a load, and perform primary compensation on electric energy consumed by the load; the transmission compensation circuit 312 is configured to compensate the power consumed by the load again, obtain transmission power having the same voltage parameter as the initial power, and transmit the transmission power to the next-stage relay unit or the receiving module 2.
In a specific embodiment, as shown in fig. 3, the receiving module 2 includes: first receiving inductor Ln_rA second receiving inductor LfnA first receiving capacitor Cn_rAnd a second receiving capacitor Cfn。
As shown in fig. 3, the first receiving inductor L according to the embodiment of the present inventionn_rThrough a first receiving capacitor Cn_rAnd a second receiving inductor LfnIs connected and passes through the first receiving capacitor C in turnn_rAnd a second receiving capacitor CfnIs connected with a first end of a load; first receiving inductor Ln_rRespectively with a second receiving inductor LfnIs connected to the second terminal of the load, R in fig. 31～RNLoads, R, of the relay unit #1 to the relay unit # N, respectivelynIs the load of the receiving module 2.
In one embodiment, as shown in fig. 3, the receiving compensation circuit 311 includes: first inductance (L)1_r～LN_r) A second inductor (L)f1～LfN) A first capacitor (C)1_r～CN_r) And a second capacitor (C)f1～CfN) Wherein the first inductance (L)1_r～LN_r) Through a first capacitor (C)1_r～CN_r) And a second inductance (L)f1～LfN) Are connected and in turn pass through a first capacitor (C)1_r～CN_r) And a second capacitor (C)f1～CfN) Respectively connected to a first terminal of the load and a first terminal of the emission compensation circuit 312; first inductance (L)1_r～LN_r) Respectively with a second inductance (L)f1～LfN) A second terminal of the load, and a second terminal of the emission compensation circuit 312.
In one embodiment, as shown in FIG. 3, the emission compensation circuit 312 includes: third inductance (L)1_t～LN_t) And a third capacitance (C)1_t～CN_t) Wherein the third inductance (L)1_t～LN_t) Through a third capacitor (C)1_t～CN_t) Is connected to a first end of the load and a second end of the load is connected to a second end of the load.
In a specific embodiment, the first inductance (L) of each relay unit 311_r～LN_r) As a receiving coil, a third inductance (L)1_t～LN_t) The receiving coil is a transmitting coil and receives the energy transmitted by the upper-stage relay unit or the transmitting module 1, and the transmitting coil transmits the compensated energy to the lower-stage relay unit or the receiving module 2.
In the compensation loop of the embodiment of the invention, the transmitting coil receives energy, and the receiving coil transmits the compensated energy to the next-stage relay unit or receiving module 2, wherein the transmitting coil adopts series compensation, the receiving coil adopts capacitance-inductance-capacitance compensation, and the coil inductance can be compensated through the compensation loop to achieve the purpose of improving the power factor.
To realize the constant current power supply for each load, the current direction of each inductor is defined as shown in fig. 3, and the mutual inductance of adjacent inductors is M1～MNWhere N is the number of the relay units 31, so the coupling coefficient between adjacent relay units 31 is as shown in formula (1):
considering the influence of the parasitic resistance of each inductor and the mutual inductance between adjacent coils on the energy in fig. 3, the loop voltage equation of each relay unit 31 can be written as follows according to kirchhoff's voltage law:
wherein Z isi_r＝ri_r+jω0Li_r+1/jω0Ci_r，Zi_t＝ri_t+jω0Li_t+1/jω0Ci_t，ri_rAnd ri_tIs the parasitic resistance, ω, of the transmitter coil and the receiver coil0Is the operating angular frequency of the system, so in order to provide constant voltage power to all loads, the resonance condition of each stage of the relay unit 31 should satisfy the following formula:
in the formula, ω0Representing the operating angular frequency, Li_rRepresenting a first inductance parameter, L, in the relay unit 31 of each stagefiRepresenting a second inductance parameter, C, in the relay unit 31 of each stagei_rRepresents each oneFirst capacitance parameter, C, in the stage repeater unit 31fiRepresenting a second capacitance parameter, L, in the relay unit 31 of each stagei_tRepresenting a third inductance parameter, C, in the relay unit 31 of each stagei_tA third capacitance parameter is indicated in each stage of the relay unit 31, where i is 1,2,3, …, N.
In an ideal situation, the parasitic resistance of the coil is small and can be ignored. The load voltage V connected to each relay unit 31 can be obtained by substituting (3) into (2)LiAnd a first inductance (L)1_r～LN_r) Current of (I)n+1_r：
In formula (4), when I ═ N, IN+1A first receiving inductor current I for the receiving module 2n_r。
For the receiving of the transmitting module 1 and the receiving module 2, I can be obtained by the same method1_rAnd VLn：
When all the compensation inductances (second inductances L) of the relay units 31 are setfi) Designed to be equal to mutual inductance MiThe method comprises the following steps:
Lf1＝Lf2＝...＝LfN＝M1＝M2＝...＝MN＝M (6)
the load voltages available according to (4) and (5) are:
VLi＝(-1)iV0 (i＝1,2,3,...,N) (7)
equation (7) shows that the load voltage is independent of the load resistance, so that the power of the load connected with the relay unit 31 is changed by changing the inductance parameter and/or the capacitance parameter of the relay unit, that is, the power of each load can be independently controlled, and the constant-current energy-supplying device does not influence the power supply of other loads due to the fluctuation of the single-stage load.
According to the constant-current energy transmitting device provided by the embodiment of the invention, the compensation loop in the relay unit compensates the received electric energy, and the inductance and the current in the relay unit meet the resonance condition, so that the output characteristics of the constant-current sources with mutually independent loads are realized, and the device cannot influence the power supply of other loads due to the fluctuation of a single-stage load. The compensation loop adopts capacitance and inductance resonance, the inductance coil shape and position errors mainly affect mutual inductance change, the inductance change degree is small, and the shape and position errors have small influence on the constant current characteristic of the output current according to the topological characteristic of the device, so the device has stronger robustness.
In the constant-current energy transmitting device provided by the embodiment of the invention, in the compensation loop, the transmitting coil adopts series compensation, the receiving coil adopts capacitance-inductance-capacitance compensation, and the purpose of improving the power factor can be achieved by compensating the inductance of the coil through the compensation loop.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (9)
1. A constant pressure energy delivery apparatus, comprising: the wireless energy transmission system comprises a transmitting module, a receiving module and a relay module, wherein the transmitting module, the relay module and the receiving module are sequentially connected in a wireless coupling non-contact mode, and the transmitting module sequentially transmits energy to the relay module and the receiving module;
the relay module comprises a plurality of relay units, each relay unit is connected in series in a wireless coupling non-contact mode, and each relay unit and the receiving module are connected with a load;
each relay unit compensates the energy transmitted by the transmitting module or the relay unit of the previous stage through the compensation loop in the relay unit, and simultaneously provides electric energy with the same voltage parameter for all loads.
2. The constant pressure energy feeding apparatus according to claim 1,
the transmitting module transmits initial electric energy to the first-stage relay unit in a wireless coupling non-contact mode;
each stage of relay unit obtains energy from the corresponding previous stage of relay unit, the received electric energy is used as initial electric energy, the initial electric energy is used for supplying power to a load connected with the relay unit, the residual electric energy after the load consumes energy is compensated to the level with the same voltage parameter as the initial electric energy, transmitting electric energy is obtained, and the transmitting electric energy is transmitted to the corresponding next stage of relay unit;
the last stage of relay unit transmits the transmitted electric energy to the receiving module through non-contact induction, and the receiving module supplies power to a load connected with the receiving module through the transmitted electric energy.
3. The constant voltage energy feeding apparatus as claimed in claim 1, wherein the transmitting module comprises: a high-frequency alternating current power supply, a transmitting capacitor and a transmitting inductor, wherein,
the high-frequency alternating current power supply, the transmitting capacitor and the transmitting capacitor are sequentially connected in series to form a series loop;
and the transmitting capacitor and the transmitting inductor form an electric energy transmitting loop of the high-frequency alternating current power supply.
4. The constant voltage energy feeding apparatus according to claim 3, wherein each of the relay units includes: a reception compensation circuit and a transmission compensation circuit, wherein,
the first end of the receiving compensation circuit is respectively connected with the first end of the load and the first end of the transmitting compensation circuit, and the second end of the receiving compensation circuit is respectively connected with the second end of the load and the second end of the transmitting compensation circuit;
the receiving compensation circuit is used for receiving the initial electric energy sent by the transmitting module or the transmitting electric energy sent by the upper-stage relay unit, transmitting the received initial electric energy or the transmitting electric energy to the load and performing primary compensation on the electric energy consumed by the load;
the transmitting compensation circuit is used for compensating the electric energy after the energy consumption of the load again to obtain transmitting electric energy with the same voltage parameter as the initial electric energy, and transmitting the transmitting electric energy to the next-stage relay unit or the receiving module.
5. The constant voltage energy feeding apparatus as claimed in claim 3, wherein the receiving module comprises: a first receiving inductor, a second receiving inductor, a first receiving capacitor and a second receiving capacitor,
the first end of the first receiving inductor is connected with the first end of the second receiving inductor through the first receiving capacitor and is connected with the first end of the load through the first receiving capacitor and the second receiving capacitor in sequence;
and the second end of the first receiving inductor is respectively connected with the second end of the second receiving inductor and the second end of the load.
6. The constant voltage power feeding apparatus as claimed in claim 4, wherein the reception compensation circuit comprises: a first inductor, a second inductor, a first capacitor and a second capacitor, wherein,
the first end of the first inductor is connected with the first end of the second inductor through a first capacitor, and is respectively connected with the first end of the load and the first end of the emission compensation circuit through the first capacitor and the second capacitor in sequence;
and the second end of the first inductor is respectively connected with the second end of the second inductor, the second end of the load and the second end of the emission compensation circuit.
7. The constant voltage energy feeding apparatus as claimed in claim 6, wherein the emission compensation circuit comprises: a third inductor and a third capacitor, wherein,
the first end of the third inductor is connected with the first end of the load through the third capacitor, and the second end of the third inductor is connected with the second end of the load.
8. The constant voltage power feeding apparatus as claimed in claim 7, wherein the resonance condition of each stage of the relay unit satisfies the following equation:
in the formula, ω0Representing the operating angular frequency, Li_rRepresenting a first inductance parameter, L, in the relay unit of each stagefiRepresenting a second inductance parameter, C, in the relay unit of each stagei_rRepresenting a first capacitance parameter, C, in the relay unit of each stagefiRepresenting a second capacitance parameter, L, in the relay unit of each stagei_tRepresenting a third inductance parameter, C, in the relay unit of each stagei_tA third capacitance parameter is indicated in each stage of the relay unit, where i is 1,2,3, …, N.
9. The constant voltage energy feeding apparatus as claimed in claim 7, wherein the power of the load connected thereto is changed by changing an inductance parameter and/or a capacitance parameter of the relay unit.
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| CN202110214234.6A CN112821579A (en) | 2021-02-25 | 2021-02-25 | Constant-pressure energy feeding device |
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| CN110971011A (en) * | 2019-12-25 | 2020-04-07 | 全球能源互联网研究院有限公司 | Wireless energy transmission device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971011A (en) * | 2019-12-25 | 2020-04-07 | 全球能源互联网研究院有限公司 | Wireless energy transmission device |
Non-Patent Citations (1)
| Title |
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| ZHE ZHOU 等: "A Wireless Power Transfer System Powering Multiple Gate Drivers in a Modular Multilevel Converter", 《2019 IEEE PELS WORKSHOP ON EMERGING TECHNOLOGIES: WIRELESS POWER TRANSFER (WOW)》 * |
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