CN112542896A - Full-area multi-load constant-power tailless power supply system - Google Patents

Full-area multi-load constant-power tailless power supply system Download PDF

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Publication number
CN112542896A
CN112542896A CN202011376756.8A CN202011376756A CN112542896A CN 112542896 A CN112542896 A CN 112542896A CN 202011376756 A CN202011376756 A CN 202011376756A CN 112542896 A CN112542896 A CN 112542896A
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China
Prior art keywords
diode
capacitor
power supply
switch tube
tailless
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Pending
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CN202011376756.8A
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Chinese (zh)
Inventor
高鑫
宋昕盈
崔淑梅
宋立伟
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Harbin Institute of Technology
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Harbin Institute of Technology
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Priority to CN202011376756.8A priority Critical patent/CN112542896A/en
Publication of CN112542896A publication Critical patent/CN112542896A/en
Pending legal-status Critical Current

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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
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Inverter Devices (AREA)

Abstract

The invention relates to a full-area multi-load constant-power tailless power supply system. The invention relates to the technical field of wireless power transmission, and the system comprises 220V single-phase power frequency alternating current, an uncontrolled rectifying circuit, a Buck conversion circuit, a D set of inverter bridges, a Q set of inverter bridges, a primary side compensation network, a transmitting coil, a receiving coil, a series compensation topology, a high-frequency rectifier bridge, a DC/DC voltage stabilizing circuit and a load. The invention realizes wireless power supply to a plurality of electric devices on the desktop at the same time. The invention adopts a system structure with double transmitting coils and multiple receiving coils to obtain the characteristic of constant induction voltage in a power supply area, so that the electric equipment can work under constant power at any position of a full-charging area. The invention adopts LCL compensation topology, can ensure the constancy of emission current, is not influenced by the property, quantity and size of the load, intelligently matches the load, and randomly switches in, switches out and adjusts the power.

Description

Full-area multi-load constant-power tailless power supply system
Technical Field
The invention relates to the technical field of wireless power transmission, in particular to a full-area multi-load constant-power tailless power supply system.
Background
Various electronic devices such as a desk lamp, a fan, a sound box, a hot water kettle and the like are often placed on the desktop of a household learning desk, a working office desk and the like, and the desktop is disordered and occupies a large space due to power supply connecting wires of the devices; frequent plugging and unplugging are needed, so that the use is inconvenient; and potential safety hazards such as electric leakage, short circuit and the like exist, so that the user experience is poor.
By adopting the wireless power transmission technology, a power line of desktop electronic equipment can be omitted, tailless power supply is really realized, convenience is improved, the desktop is more convenient to use, and the desktop is tidier; and has very high security, has eliminated the potential safety hazard that plug operation probably exists.
Disclosure of Invention
The invention adopts a static wireless power supply technology to reduce potential safety hazard, and provides the following technical scheme:
a full-area multi-load constant-power tailless power supply system comprises 220V single-phase power-frequency alternating current, an uncontrolled rectifying circuit, a Buck conversion circuit, a D set of inverter bridges, a Q set of inverter bridges, a primary side compensation network, a transmitting coil, a receiving coil, a series compensation topology, a high-frequency rectifying bridge, a DC/DC voltage stabilizing circuit and a load;
the 220V single-phase power frequency alternating current data current passes through an uncontrolled rectifier circuit and a Buck conversion circuit to obtain direct current bus voltage, the direct current bus voltage passes through a D group of inverter bridges and a Q group of inverter bridges and then supplies power to a transmitting coil through a primary side compensation network, the transmitting coil and a receiving coil are mutually inductive, and the receiving coil supplies power to a load through a series compensation topology, a high-frequency rectifier bridge and a DC/DC voltage stabilizing circuit; the primary side compensation network is used for realizing random switching-in and switching-out of a load and adjusting power.
Preferably, the uncontrolled rectifying circuit comprises a diode D1Diode D2Diode D3And a diode D4Said twoPolar tube D1And a diode D2One end is connected with a 220V single-phase power frequency alternating current positive electrode, a diode D1The other end is connected with a diode D3One end of the diode D2The other end is connected with a diode D4One end of the diode D3And a diode D4The other end is connected with a 220V single-phase power frequency alternating current negative electrode.
Preferably, the Buck conversion circuit comprises a capacitor C0Switch tube S0Diode D0And an inductance L0Said capacitor C0One end is respectively connected with a diode D3One end and a switch tube S0One end of the capacitor C0One end is respectively connected with a diode D0And a diode D4One end of the diode D0And a switching tube S0The other end is connected with an inductor L0One end of the tube.
Preferably, the D-group inverter bridge comprises a switch tube S1Switch tube S2Switch tube S3Switch tube S4And a capacitor C1Said inductance L0The other ends are respectively connected with a switch tube S1Switch tube S3And a capacitor C1One end, a switching tube S1The other end is connected with a switch tube S2One end, a switching tube S3The other end is connected with a switch tube S4One end, a switching tube S2And a switching tube S4The other end is connected with a capacitor C1And the other end.
Preferably, the Q-bank inverter bridge comprises a switching tube S5Switch tube S6Switch tube S7Switch tube S8And a capacitor C2Said inductance L0The other ends are respectively connected with a switch tube S5Switch tube S7And a capacitor C2One end, a switching tube S5The other end is connected with a switch tube S6One end, a switching tube S7The other end is connected with a switch tube S8One end, a switching tube S6And a switching tube S8The other end is connected with a capacitor C2And the other end.
Preferably, the primary side compensation network adopts a compensation topology of the LCL, and the primary side compensation network includes an inductance LDrCapacitor CDInductor LQrAnd a capacitor CQThe transmitting coil comprises a first transmitting coil LDAnd a second transmitting coil LQ(ii) a The transmitting coil is formed by two groups of square coils, and the spatial positions are staggered 1/4 polar distances;
switch tube S1The other end is connected with an inductor LDrOne terminal, inductor LDrThe other end is connected with a capacitor CDAnd a first radiation coil LDOne end of the capacitor CDAnd a first radiation coil LDThe other end is connected with a switch tube S4One end;
switch tube S5The other end is connected with an inductor LQrOne terminal, inductor LQrThe other end is connected with a capacitor CQAnd a second transmitting coil LQOne end of the capacitor CQAnd a second transmitting coil LQThe other end is connected with a switch tube S8One end of the tube.
Preferably, the receiving coil comprises a first receiving coil LTA second receiving coil LFAnd a third receiving coil LYSaid series compensation topology comprising a capacitance CTCapacitor CFCapacitor CYThe high-frequency rectifier bridge comprises a first rectifier bridge, a second rectifier bridge and a third rectifier bridge, and the first rectifier bridge comprises a diode DT1Diode DT2Diode DT3Diode DT4And a capacitor CT0The first receiving coil LTOne end is connected with a capacitor CTOne end of the capacitor CTThe other ends are respectively connected with a diode DT1And a diode DT2One end, the first receiving coil LTThe other ends are respectively connected with a diode DT3And a diode DT4One end of the diode DT1The other end is connected with a diode DT3The other end and a capacitor CT0One end of the diode DT2The other end is connected with a diode DT4And a capacitor CT0And the other end.
Preferably, the DC/DC voltage stabilizing circuit includes a first DC/DC voltage stabilizing circuit, a second DC/DC voltage stabilizing circuit and a third DC/DC voltage stabilizing circuit, and the capacitor CT0Two ends of the first DC/DC voltage stabilizing circuit are respectively connected with the first DC/DC voltage stabilizing circuit;
the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are identical in structure, and the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are identical in connection relation with the series compensation topology, the receiving coil and the DC/DC voltage stabilizing circuit.
Preferably, the loads include a first load, a second load and a third load, and the first DC/DC voltage stabilizing circuit, the second DC/DC voltage stabilizing circuit and the third DC/DC voltage stabilizing circuit sequentially supply power to the first load, the second load and the third load.
Preferably, the load comprises a plurality of electric devices such as a desk lamp, a fan, a Bluetooth sound box, a hot water kettle, a purifier, a mobile phone, a keyboard and a mouse.
The invention has the following beneficial effects:
the invention realizes wireless power supply to a plurality of electric devices on the desktop at the same time. The invention adopts a system structure with double transmitting coils and multiple receiving coils to obtain the characteristic of constant induction voltage in a full power supply area, so that the electric equipment can work under constant power at any position of a charging area.
The invention adopts LCL compensation topology, can ensure the constancy of emission current, is not influenced by the property, quantity and size of the load, intelligently matches the load, and randomly switches in, switches out and adjusts the power.
Drawings
FIG. 1 is a schematic diagram of a topology of a tailless power supply system based on wireless power transmission;
fig. 2 is a schematic diagram of a transmitting end of a tailless power supply system based on wireless power transmission;
FIG. 3 is a schematic view of a coupling mechanism of a prototype;
FIG. 4 is a schematic load diagram;
FIG. 5 is a schematic diagram of a high frequency inversion source;
fig. 6 is a physical diagram of a tailless supply system.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The first embodiment is as follows:
as shown in fig. 1 to 6, the present invention provides a tailless power supply system with multiple loads and constant power in a whole area, which specifically comprises:
a full-area multi-load constant-power tailless power supply system comprises 220V single-phase power-frequency alternating current, an uncontrolled rectifying circuit, a Buck conversion circuit, a D set of inverter bridges, a Q set of inverter bridges, a primary side compensation network, a transmitting coil, a receiving coil, a series compensation topology, a high-frequency rectifying bridge, a DC/DC voltage stabilizing circuit and a load;
the 220V single-phase power frequency alternating current passes through an uncontrolled rectifier circuit and a Buck conversion circuit to obtain direct current bus voltage, the direct current bus voltage passes through a D group of inverter bridges and a Q group of inverter bridges, power is supplied to a transmitting coil through a primary side compensation network, the transmitting coil and a receiving coil are mutually inductive, and the receiving coil supplies power to a load through a series compensation topology, a high-frequency rectifier bridge and a DC/DC voltage stabilizing circuit; the primary side compensation network is used for realizing random switching-in and switching-out of a load and adjusting power.
The uncontrolled rectifying circuit comprises a diode D1Diode D2Diode D3And a diode D4Said diode D1And a diode D2One end is connected with a 220V single-phase power frequency alternating current positive electrode, a diode D1The other end is connected with a diode D3One end of the diode D2The other end is connected with a diode D4One end of the diode D3And a diode D4The other end is connected with a 220V single-phase power frequency alternating current negative electrode.
The Buck conversion circuit comprises a capacitor C0Switch tube S0Diode D0And an inductance L0Said capacitor C0One end is respectively connected with a diode D3One end and a switch tube S0One end of the capacitor C0One end is respectively connected with a diode D0And a diode D4One end of the diode D0And a switching tube S0The other end is connected with an inductor L0One end of the tube.
The D-group inverter bridge comprises a switch tube S1Switch tube S2Switch tube S3Switch, and electronic device using the samePipe S4And a capacitor C1Said inductance L0The other ends are respectively connected with a switch tube S1Switch tube S3And a capacitor C1One end, a switching tube S1The other end is connected with a switch tube S2One end, a switching tube S3The other end is connected with a switch tube S4One end, a switching tube S2And a switching tube S4The other end is connected with a capacitor C1And the other end.
The Q set of inverter bridges comprises a switching tube S5Switch tube S6Switch tube S7Switch tube S8And a capacitor C2Said inductance L0The other ends are respectively connected with a switch tube S5Switch tube S7And a capacitor C2One end, a switching tube S5The other end is connected with a switch tube S6One end, a switching tube S7The other end is connected with a switch tube S8One end, a switching tube S6And a switching tube S8The other end is connected with a capacitor C2And the other end.
The primary side compensation network adopts a compensation topology of LCL and comprises an inductor LDrCapacitor CDInductor LQrAnd a capacitor CQThe transmitting coil comprises a first transmitting coil LDAnd a second transmitting coil LQ(ii) a The transmitting coil is formed by two groups of square coils, and the spatial positions are staggered 1/4 polar distances;
switch tube S1The other end is connected with an inductor LDrOne terminal, inductor LDrThe other end is connected with a capacitor CDAnd a first radiation coil LDOne end of the capacitor CDAnd a first radiation coil LDThe other end is connected with a switch tube S4One end;
switch tube S5The other end is connected with an inductor LQrOne terminal, inductor LQrThe other end is connected with a capacitor CQAnd a second transmitting coil LQOne end of the capacitor CQAnd a second transmitting coil LQThe other end is connected with a switch tube S8One end of the tube.
The receiving coil comprises a first receiving coil LTA second receiving coil LFAnd a firstThree receiving coils LYSaid series compensation topology comprising a capacitance CTCapacitor CFCapacitor CYThe high-frequency rectifier bridge comprises a first rectifier bridge, a second rectifier bridge and a third rectifier bridge, and the first rectifier bridge comprises a diode DT1Diode DT2Diode DT3Diode DT4And a capacitor CT0The first receiving coil LTOne end is connected with a capacitor CTOne end of the capacitor CTThe other ends are respectively connected with a diode DT1And a diode DT2One end, the first receiving coil LTThe other ends are respectively connected with a diode DT3And a diode DT4One end of the diode DT1The other end is connected with a diode DT3The other end and a capacitor CT0One end of the diode DT2The other end is connected with a diode DT4And a capacitor CT0And the other end.
The DC/DC voltage stabilizing circuit comprises a first DC/DC voltage stabilizing circuit, a second DC/DC voltage stabilizing circuit and a third DC/DC voltage stabilizing circuit, and the capacitor CT0Two ends of the first DC/DC voltage stabilizing circuit are respectively connected with the first DC/DC voltage stabilizing circuit;
the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are identical in structure, and the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are identical in connection relation with the series compensation topology, the receiving coil and the DC/DC voltage stabilizing circuit.
The first DC/DC voltage stabilizing circuit, the second DC/DC voltage stabilizing circuit and the third DC/DC voltage stabilizing circuit sequentially supply power to the first load, the second load and the third load.
The load comprises a plurality of electric devices such as a desk lamp, a fan, a Bluetooth sound box, a hot water kettle, a purifier, a mobile phone, a keyboard and a mouse.
The second embodiment is as follows:
the circuit topology of the tailless power supply table system is shown in figure 1, 220V single-phase power frequency alternating current (1) is input to a transmitting end, direct current bus voltage is obtained after the direct current bus voltage passes through an uncontrolled rectifying circuit (2) and a Buck conversion circuit (3), then power is respectively supplied to two groups of transmitting coils (7) through a D (direct) group inverter bridge (4) and a Q (quadrature) group inverter bridge (5), a primary side compensation network adopts an LCL (Inductance-Capacitance-Inductance) topology (6), the topology has the characteristic of hardware constant current, the size of transmitting current is independent of loads, therefore, the loads cannot be influenced mutually, and random switching-in and power adjustment of the loads can be realized. The receiving end adopts different coils and electric energy conversion circuits according to different loads. The high-frequency power supply generally comprises a receiving coil (8), a series compensation topology (9), a high-frequency rectifier bridge (10), a DC/DC voltage stabilizing circuit (11), a load (12) and the like.
The transmitting end of the coupling mechanism of the tailless power supply table system is composed of two groups of square coils, namely a D coil (1) and a Q coil (2), as shown in fig. 2, and the spatial positions of the two groups of square coils are staggered 1/4 polar distances. Since the two sets of coils are spatially orthogonal, there is no cross-coupling. The two groups of coils are independently powered by the D group of inverter bridges and the Q group of inverter bridges respectively, the phases of the inverted output voltages of the two groups of coils are staggered by 90 degrees, so that the phases of the currents in the two transmitting coils are staggered by 90 degrees, an alternating magnetic field with constant amplitude can be generated in space, a receiving voltage with constant amplitude is induced in the receiving coil, stable output voltage and output power can be obtained at any position in the region of the transmitting coil, and the load equipment is allowed to normally work at any position.
According to the coil structure and the circuit topology, a wireless power supply desktop demonstration system is developed, the transmitting coil is wound on a wood board for simulating a desktop, and in order to reduce the influence of the skin effect on the system loss and efficiency, a litz wire is wound into a multi-turn rectangular coil. The load comprises three electric devices of a desk lamp, a fan and a Bluetooth sound box, and the receiving coil is a multi-turn round coil wound by litz wires and is shown in figure 3.
The three loads are modified, the lithium battery is taken out, and a receiving coil, a resonant capacitor, a high-frequency rectifying circuit, a DC/DC voltage stabilizing circuit and an input port connected to a load control circuit are mounted on the lithium battery. The retrofitted load is shown in figure 4.
Experiments show that the fan runs normally, the desk lamp illuminates normally, and the Bluetooth sound box has normal functions of playing music, receiving, displaying, breathing and the like; the working state of the load at any position on the table top is unchanged; the load can be switched in and out at will, and the brightness, the rotating speed and the volume can be adjusted at will, without influencing the working state of the system.
The above is only a preferred embodiment of the tailless power supply system with multiple loads and constant power in the whole area, and the protection range of the tailless power supply system with multiple loads and constant power in the whole area is not limited to the above embodiments, and all technical solutions belonging to the idea belong to the protection range of the present invention. It should be noted that modifications and variations which do not depart from the gist of the invention will be those skilled in the art to which the invention pertains and which are intended to be within the scope of the invention.

Claims (10)

1. A full-area multi-load constant-power tailless power supply system is characterized in that: the system comprises 220V single-phase power frequency alternating current, an uncontrolled rectifying circuit, a Buck conversion circuit, a D set of inverter bridges, a Q set of inverter bridges, a primary side compensation network, a transmitting coil, a receiving coil, a series compensation topology, a high-frequency rectifying bridge, a DC/DC voltage stabilizing circuit and a load;
the 220V single-phase power frequency alternating current data current passes through an uncontrolled rectifier circuit and a Buck conversion circuit to obtain direct current bus voltage, the direct current bus voltage passes through a D group of inverter bridges and a Q group of inverter bridges and then supplies power to a transmitting coil through a primary side compensation network, the transmitting coil and a receiving coil are mutually inductive, and the receiving coil supplies power to a load through a series compensation topology, a high-frequency rectifier bridge and a DC/DC voltage stabilizing circuit; the primary side compensation network is used for realizing random switching-in and switching-out of a load and adjusting power.
2. The tailless power supply system of claim 1, wherein the tailless power supply system comprises: the uncontrolled rectifying circuit comprises a diode D1Diode D2Diode D3And a diode D4Said diode D1And a diode D2One end is connected with a 220V single-phase power frequency alternating current positive electrode, a diode D1The other end is connected with a diode D3One end of the diode D2The other end is connected with a diode D4One end of the diode D3And a diode D4The other end is connected with a 220V single-phase power frequency alternating current negative electrode.
3. The tailless power supply system of claim 2, wherein the tailless power supply system comprises: the Buck conversion circuit comprises a capacitor C0Switch tube S0Diode D0And an inductance L0Said capacitor C0One end is respectively connected with a diode D3One end and a switch tube S0One end of the capacitor C0One end is respectively connected with a diode D0And a diode D4One end of the diode D0And a switching tube S0The other end is connected with an inductor L0One end of the tube.
4. The tailless power supply system of claim 3, wherein the tailless power supply system comprises: the D-group inverter bridge comprises a switch tube S1Switch tube S2Switch tube S3Switch tube S4And a capacitor C1Said inductance L0The other ends are respectively connected with a switch tube S1Switch tube S3And a capacitor C1One end, a switching tube S1The other end is connected with a switch tube S2One end, a switching tube S3The other end is connected with a switch tube S4One end, a switching tube S2And a switching tube S4The other end is connected with a capacitor C1And the other end.
5. The system of claim 4, wherein the system comprises: the Q set of inverter bridges comprises a switching tube S5Switch tube S6Switch tube S7Switch tube S8And a capacitor C2Said inductance L0The other ends are respectively connected with a switch tube S5Switch tube S7And a capacitor C2One end, a switching tube S5The other end is connected with a switch tube S6One end, a switching tube S7The other end is connected with a switch tube S8One end, a switching tube S6And a switching tubeS8The other end is connected with a capacitor C2And the other end.
6. The tailless power supply system of claim 1, wherein the tailless power supply system comprises: the primary side compensation network adopts a compensation topology of LCL and comprises an inductor LDrCapacitor CDInductor LQrAnd a capacitor CQThe transmitting coil comprises a first transmitting coil LDAnd a second transmitting coil LQ(ii) a The transmitting coil is formed by two groups of square coils, and the spatial positions are staggered 1/4 polar distances;
switch tube S1The other end is connected with an inductor LDrOne terminal, inductor LDrThe other end is connected with a capacitor CDAnd a first radiation coil LDOne end of the capacitor CDAnd a first radiation coil LDThe other end is connected with a switch tube S4One end;
switch tube S5The other end is connected with an inductor LQrOne terminal, inductor LQrThe other end is connected with a capacitor CQAnd a second transmitting coil LQOne end of the capacitor CQAnd a second transmitting coil LQThe other end is connected with a switch tube S8One end of the tube.
7. The tailless power supply system of claim 6, wherein the tailless power supply system comprises: the receiving coil comprises a first receiving coil LTA second receiving coil LFAnd a third receiving coil LYSaid series compensation topology comprising a capacitance CTCapacitor CFAnd a capacitor CYThe high-frequency rectifier bridge comprises a first rectifier bridge, a second rectifier bridge and a third rectifier bridge, and the first rectifier bridge comprises a diode DT1Diode DT2Diode DT3Diode DT4And a capacitor CT0The first receiving coil LTOne end is connected with a capacitor CTOne end of the capacitor CTThe other ends are respectively connected with a diode DT1And a diode DT2One end, the first receiving coil LTThe other ends are respectively connected with a diode DT3And a diode DT4One end of the diode DT1The other end is connected with a diode DT3The other end and a capacitor CT0One end of the diode DT2The other end is connected with a diode DT4And a capacitor CT0And the other end.
8. The tailless power supply system of claim 7, wherein the tailless power supply system comprises: the DC/DC voltage stabilizing circuit comprises a first DC/DC voltage stabilizing circuit, a second DC/DC voltage stabilizing circuit and a third DC/DC voltage stabilizing circuit, and the capacitor CT0Two ends of the first DC/DC voltage stabilizing circuit are respectively connected with the first DC/DC voltage stabilizing circuit;
the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are identical in structure, and the first rectifier bridge, the second rectifier bridge and the third rectifier bridge are identical in connection relation with the series compensation topology, the receiving coil and the DC/DC voltage stabilizing circuit.
9. The tailless power supply system of claim 8, wherein the tailless power supply system comprises: the first DC/DC voltage stabilizing circuit, the second DC/DC voltage stabilizing circuit and the third DC/DC voltage stabilizing circuit sequentially supply power to the first load, the second load and the third load.
10. The tailless power supply system of claim 9, wherein the tailless power supply system comprises: the load adopts multiple consumer, the load includes desk lamp, fan, bluetooth speaker, thermos, clarifier, cell-phone, keyboard and mouse.
CN202011376756.8A 2020-11-30 2020-11-30 Full-area multi-load constant-power tailless power supply system Pending CN112542896A (en)

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Application Number Priority Date Filing Date Title
CN202011376756.8A CN112542896A (en) 2020-11-30 2020-11-30 Full-area multi-load constant-power tailless power supply system

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CN202011376756.8A CN112542896A (en) 2020-11-30 2020-11-30 Full-area multi-load constant-power tailless power supply system

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Cited By (1)

* Cited by examiner, † Cited by third party
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