CN208142936U - A kind of power supply unit for guide tracked non-contact electric energy transmission system - Google Patents
A kind of power supply unit for guide tracked non-contact electric energy transmission system Download PDFInfo
- Publication number
- CN208142936U CN208142936U CN201820284943.5U CN201820284943U CN208142936U CN 208142936 U CN208142936 U CN 208142936U CN 201820284943 U CN201820284943 U CN 201820284943U CN 208142936 U CN208142936 U CN 208142936U
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- Prior art keywords
- circuit
- power supply
- guide tracked
- primary side
- supply unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Inverter Devices (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The utility model discloses a kind of power supply units for guide tracked non-contact electric energy transmission system comprising sequentially connected power frequency supply, EMI filter circuit, current rectifying and wave filtering circuit, high-frequency inverter circuit and guide tracked primary side cable；Primary side compensation circuit is provided between the high-frequency inverter circuit and the guide tracked primary side cable, the primary side compensation circuit includes LCL resonance compensation circuit and the first compensating electric capacity；It further include power supply rail electric current constant current closed loop regulating mechanism, including DC bus-bar voltage protection circuit, resonant network capacitance voltage protection circuit, track current sample circuit, DSP circuit and driving circuit.The utility model structure is simple, easy to use, has many advantages, such as the safety and convenience of no trailing cable, non-contact resistance, height, overcomes a series of traditional conductor contact shortcoming and defect of transmission mode bring.
Description
Technical field
A kind of guide tracked non-contact electric energy transmission system power supply unit of the utility model is related to traffic and transport field, industrial production neck
Domain, wherein industrial circle application is related to AGV- automatically guiding trolley, sled carries application, transfer trolley, EMS- electric monorail system
System, Sorting Technique, dust free room technical application.
Background technique
It is generally powered by the way of sliding contact in field of industrial production to certain mobile electrical equipments, this power supply
There are the shortcomings such as contact resistance big, contact sparking, carbon accumulation, skimming wear, electrical body be exposed in mode, not only in operation
Output power, equipment movement speed are limited, operating environment around is returned and brings security risk, especially in mining, chemical industry etc.
Some inflammable, explosive industries, the electric spark that contact power supply generates easily cause safety accident.
Non-contact power supply carries out electric energy transmission by the way of electromagnetic induction coupling, connects with no trailing cable, nothing
The advantages that electric shock resistance, the safety and convenience of height, it is a series of scarce to overcome traditional conductor contact transmission mode bring
Point and deficiency.Compared with traditional power supply mode, contactless power transfer technology has the advantages that very big.Due to electrical equipment and supply
Without electrical connection between electric equipment, the plug between line trap is avoided, the generation for the electric spark that can get along, electrical is reliable
Property and safety are greatly improved.
Existing contactless power transfer technology is generally adopted by loose coupling mode and transmits electric power, existing technology
Problem can have biggish electric leakage between primary and secondary side precisely due to there was only the coefficient of coup of very little between primary and secondary side
Sense, the electric current of primary side may will increase and power factor (PF) is lower.
Summary of the invention
The purpose of utility model device seeks to solve deficiency in above-mentioned background technique, provides a kind of for guide tracked
The power supply unit of non-contact electric energy transmission system is not only simple in structure, is easy to install and use, and non-can connect to be guide tracked
The energy pickup device of touching electric energy transmission system provides stable electric current.
In order to solve the above technical problems, the utility model is used for guide tracked transmitting non-contact electric energy system using such a
The power supply unit of system comprising sequentially connected power frequency supply, EMI filter circuit, current rectifying and wave filtering circuit, high-frequency inverter circuit and
Guide tracked primary side cable；Primary side compensation circuit, institute are provided between the high-frequency inverter circuit and the guide tracked primary side cable
Stating primary side compensation circuit includes LCL resonance compensation circuit and the first compensating electric capacity (Cs), and the calculating of first compensating electric capacity is public
Formula is as follows：
Wherein, s is cross-section of cable product, and f is rail currents working frequency, and L is guide rail cable length.
In a kind of preferred embodiment of the utility model, the LCL resonance compensation circuit includes compensation inductance (La)、
Second compensating electric capacity (Cf) and track inductor (Lb), the compensation inductance (La) and suffered track inductor (Lb) it is sequentially connected in series arrangement,
Second compensating electric capacity (the Cf) be arranged in parallel in the compensation inductance (La) and the track inductor (Lb) between.
In a kind of preferred embodiment of the utility model, the compensation inductance (La) and second compensating electric capacity
(Cf) resonance occurs at system switching frequency.In the case where DC bus-bar voltage Uin is remained unchanged, primary side rail currents Ip
There are formulaMathematical relationship.
It further include that the track current in parallel with the power supply unit is permanent in a kind of preferred embodiment of the utility model
Flow closed loop regulating mechanism；The track current constant current closed loop regulating mechanism includes DC bus-bar voltage protection circuit, resonant network
Capacitance voltage protects circuit, track current sample circuit, DSP circuit and driving circuit；The DC bus-bar voltage protects circuit
Input terminal connect with the current rectifying and wave filtering circuit, output end is connect with the input terminal of the DSP circuit；The resonant network electricity
The input terminal of appearance voltage protection circuit is connect with the primary side compensation circuit, output end is connect with the input terminal of the DSP circuit；
The input terminal of the track current sample circuit is connect with the guide tracked primary coil, output end is defeated with the DSP circuit
Enter end connection；The output end of the DSP circuit is connect with the driving circuit, the driving circuit and the high-frequency inverter circuit
Connection.
In a kind of preferred embodiment of the utility model, the DC bus-bar voltage protection circuit includes being sequentially connected in series
Busbar voltage acquisition module and signal conditioning module；The busbar voltage acquisition module is connect with the current rectifying and wave filtering circuit,
The signal conditioning module is connect with the DSP circuit.
In a kind of preferred embodiment of the utility model, the resonant network capacitance voltage protection circuit includes successively
Concatenated second compensating electric capacity voltage signal acquisition module and signal conditioning module；The second compensating electric capacity voltage signal acquisition
Module is connect with the primary side compensation circuit, and the signal conditioning module is connect with the DSP circuit.
In a kind of preferred embodiment of the utility model, the track current sample circuit includes the electricity being sequentially connected in series
Flow Hall and signal conditioning circuit；The current Hall is connect with the guide tracked primary coil, the signal conditioning module with
The DSP circuit connection.
In a kind of preferred embodiment of the utility model, the busbar voltage acquisition module includes sampling resistor, institute
Stating signal conditioning module includes difference channel.
In a kind of preferred embodiment of the utility model, the second compensating electric capacity voltage signal acquisition module includes
Sampling resistor, the signal conditioning module include check the mark circuit and precise rectification circuit.
In a kind of preferred embodiment of the utility model, the signal conditioning module includes that difference channel and precision are whole
Current circuit.
The utility model has the beneficial effects that：The utility model structure is simple, easy to use, by primary side supply side
It has to the efficiency of transmission of system not only can be improved, while power factor value can also be improved plus compensation circuit；Simultaneously
It is also necessary in secondary coil plus compensation circuit, the purpose is to eliminate to be influenced by the low bring leakage inductance of the coefficient of coup.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for guide tracked non-contact electric energy transmission system of the utility model embodiment；
Fig. 2 is a kind of schematic diagram for guide tracked non-contact electric energy transmission system of the utility model embodiment；
Fig. 3 is a kind of EMI filter rectification electricity for guide tracked non-contact electric energy transmission system of the utility model embodiment
Road schematic diagram；
Fig. 4 is that a kind of resonant tank circuit for guide tracked non-contact electric energy transmission system of the utility model embodiment is former
Reason figure；
Fig. 5 is that a kind of power supply unit control for guide tracked non-contact electric energy transmission system of the utility model embodiment is former
Reason figure；
Fig. 6 is a kind of sampled signal processing stream for guide tracked non-contact electric energy transmission system of the utility model embodiment
Cheng Tu.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
The invention discloses a kind of guide tracked non-contact electric energy transmission system power supply units comprising sequentially connected power frequency
Power supply, EMI filter circuit, current rectifying and wave filtering circuit, high-frequency inverter circuit and guide tracked primary side cable；High-frequency inverter circuit and guide rail
Primary side compensation circuit is provided between formula primary side cable, primary side compensation circuit includes LCL resonance compensation circuit and the first compensation electricity
Hold Cs, the calculation formula of the first compensating electric capacity is as follows：
Wherein, s is cross-section of cable product, and f is rail currents working frequency, and L is guide rail cable length.LCL resonance compensation electricity
Road includes compensation inductance La, the second compensating electric capacity CfWith track inductor Lb, compensate inductance LaWith suffered track inductor LbIt is sequentially connected in series
Arrangement, the second compensating electric capacity CfIt is arranged in parallel in compensation inductance LaWith track inductor LbBetween.Compensate inductance LaWith the second compensation electricity
Hold CfResonance occurs at system switching frequency；When DC bus-bar voltage Uin is remained unchanged, primary side rail currents Ip calculates public
Formula isIt further include the track current constant current closed loop regulating mechanism in parallel with power supply unit；Track current constant current closed loop
Regulating mechanism include DC bus-bar voltage protection circuit, resonant network capacitance voltage protection circuit, track current sample circuit,
DSP circuit and driving circuit；The input terminal of DC bus-bar voltage protection circuit connect with current rectifying and wave filtering circuit, output end and DSP
The input terminal of circuit connects；Resonant network capacitance voltage protection circuit input terminal connect with primary side compensation circuit, output end and
The input terminal of DSP circuit connects；The input terminal of track current sample circuit and guide tracked primary side cable connection, output end and DSP
The input terminal of circuit connects；The output end of DSP circuit is connect with driving circuit, and driving circuit is connect with high-frequency inverter circuit.Directly
Flowing busbar voltage protection circuit includes the busbar voltage acquisition module being sequentially connected in series and signal conditioning module；Busbar voltage acquires mould
Block is connect with current rectifying and wave filtering circuit, and signal conditioning module is connect with DSP circuit.Resonant network capacitance voltage protection circuit include according to
Secondary concatenated second compensating electric capacity voltage signal acquisition module and signal conditioning module；Second compensating electric capacity voltage signal acquisition mould
Block is connect with primary side compensation circuit, and signal conditioning module is connect with DSP circuit.Track current sample circuit includes being sequentially connected in series
Current Hall and signal conditioning circuit；Current Hall and guide tracked primary side cable connection, signal conditioning module and DSP circuit connect
It connects.Busbar voltage acquisition module includes sampling resistor, and signal conditioning module includes difference channel.Second compensating electric capacity voltage signal
Acquisition module includes sampling resistor, and signal conditioning module includes check the mark circuit and precise rectification circuit.Signal conditioning module includes
Difference channel and precise rectification circuit.
By a kind of description of the invention power supply unit for guide tracked non-contact electric energy transmission system shown in the drawings,
Guide tracked non-contact electric energy transmission system power supply unit includes sequentially connected power frequency supply, EMI filter circuit, rectifying and wave-filtering electricity
Road and high-frequency inverter circuit are also connected with the resonance compensation circuit for generating high-frequency current on high-frequency inverter circuit.
Resonance compensation circuit and compensating electric capacity are also connected between high-frequency inverter circuit in power supply unit and primary side cable
Cs, Cs are according to formulaCarry out value, s is cross-section of cable product, f is rail currents working frequency, and L is guide rail
Cable length.
As shown in Fig. 2, being guide tracked non-contact electric energy transmission system power supply unit schematic diagram.System power supply input is three-phase
380AC/50HZ power supply, provides electric energy, rectification circuit by power switch, electromagnetic interface filter and uncontrollable rectifier circuit for rear class
The full bridge rectifier formed using 4 diodes.
As shown in Fig. 2, the no-voltage series resonance soft switch full inverter circuit based on resonant transformation technology mainly by Q1,
Totally four MOSFET pipes form by Q2, Q3, Q4, are controlled using Bipolar control mode, switching tube Q2/Q4 push-push operation is opened
Pipe Q1/Q3 push-push operation is closed, guarantees that the switching tube of same bridge arm does not simultaneously turn on, to avoid short circuit.Pass through the logical of switch tube
Direct current is converted to high-frequency alternating current by disconnected realize, completes inversion.By hf rectifier rectification, filtering, inversion, then by resonance
The circuits such as compensation circuit generate high-frequency alternating current in primary side, therefore high frequency magnetic field can be generated near primary side cable.
It is illustrated in figure 3 the schematic diagram of phase three-wire three EMI filter rectifier.Mainly filter out the external world connects electricity to filter circuit
Interference of the high-frequency impulse of net to power supply, while Switching Power Supply itself is decreased to extraneous electromagnetic interference.Include in circuit
Common mode choke LEMIWith filter capacitor C1-C4, R1 be bleeder resistance, D1, D2 are excess voltage suppressors.
As shown in figure 4, system resonance compensation circuit uses parallel resonance LCL compensation circuit, La is the compensation inductance of system,
CfFor the compensating electric capacity of system, Lb is track inductor, and Zr is the equivalent impedance that secondary impedance maps to primary side.According to Fig. 4 circuit
Guide rail generation constant current is related to input voltage Uin and LCL compensation circuit parameter, in LCL resonant topology, inductance La
With capacitor CfResonance occurs at system switching frequency.In the case where DC bus-bar voltage Uin is remained unchanged, primary side guide rail electricity
Flowing Ip, there are formulaMathematical relationship.
Power supply unit control principle drawing as shown in Figure 5.Power supply unit needs to realize rail currents constant control, closed-loop control
In need designed path electric current constant current closed loop regulating mechanism.Cause system running state unstable for network voltage is too high or too low
It is fixed, design the over-voltage of uncontrollable rectifier outlet side DC bus-bar voltage and under-voltage protection；To guarantee system safety after resonant network failure,
It designs resonant network capacitance voltage and protects circuit.
Rectifier output voltage acquisition is sent into DSP and does DC bus protection.When rectification busbar voltage is too high or too low, block
The driving of PWM.It just can guarantee that port current is smaller when busbar voltage fluctuates in the reasonable scope.When input voltage is lower, system
Controller is not enough to realize the requirement of the track constant current reached；When input voltage is higher, to capacitor stress in rear class resonant network
It is required that excessive.It fails for LCL resonant network and carries out design protection.Acquire resonant capacitance C in resonant network LCL topologyfElectricity
Signal is pressed, reasonable voltage signal is converted by signal conditioning circuit and is sent into DSP when system resonance electric current is abnormal i.e.
Driving can be blocked to protect LCL resonant network.High current signal acquisition is low current by current Hall by rail currents
Signal is converted into d. c. voltage signal through signal conditioning circuit and is sent into DSP.DSP designs PI controller by software mode, by PI
Operation result is converted into the phase shifting angle amplitude feedback of PWM wave to driving circuit, changes full-bridge phase shifting angle by driving circuit and realizes
Track current current constant control.
The current Hall that current sample uses is CSM-300LTA type current sensor, which is 1:2000,
Guide rail cable is gone through from Hall, and when having electric current in guide rail cable, Hall element can export pair on output pin
The electric current answered.It will be grounded after output electric current access resistance, acquiring ohmically voltage can be obtained current value.
DSP circuit function issue 4 tunnel driving signals, by drive isolation circuit be converted to PWM drive signal T1AB,
T2AB, respectively drives that full-bridge circuit upper tube is driven to Q1/3 and down tube is driven to Q2/4.
It is designed for signal condition part in controlled resonant converter sample circuit, as shown in fig. 6, respectively being sampled for three tunnels
Signal processing flow figure.For track current sample circuit, high current sinusoidal current is acquired.Pass through current Hall first
Become low current signal.Low current signal by resistance becomes voltage signal, and through difference channel to be converted to the port suitable DSP AD defeated
Enter the size of voltage, most becomes DC quantity through precision rectifying afterwards and be sent into DSP.For DC-bus voltage sampling circuit, by big
Electric resistance partial pressure directly acquires busbar voltage, is sent directly into DSP through difference channel diminution.For capacitance voltage sample circuit, pass through
It is contracted to appropriate amplitude through difference channel after big electrical resistance collection capacitance voltage, is sent into DSP by precision rectifying.
It should be understood that the above is only a specific embodiment of the invention, but protection scope of the present invention is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the invention, the variation that can readily occur in or is replaced
It changes, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of power supply unit for guide tracked non-contact electric energy transmission system comprising sequentially connected power frequency supply, EMI
Filter circuit, current rectifying and wave filtering circuit, high-frequency inverter circuit and guide tracked primary side cable；It is characterized in that：The high-frequency inversion electricity
Primary side compensation circuit is provided between road and the guide tracked primary side cable, the primary side compensation circuit includes LCL resonance compensation
Circuit and the first compensating electric capacity (Cs), the calculation formula of first compensating electric capacity are as follows：
Wherein, s is cross-section of cable product, and f is rail currents working frequency, and L is guide rail cable length.
2. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 1, feature exist
In：The LCL resonance compensation circuit includes compensation inductance (La), the second compensating electric capacity (Cf) and track inductor (Lb), the compensation
Inductance (La) and suffered track inductor (Lb) it is sequentially connected in series arrangement, the second compensating electric capacity (Cf) be arranged in parallel in the compensation
Inductance (La) and the track inductor (Lb) between.
3. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 2, feature exist
In：Compensation inductance (the La) and the second compensating electric capacity (Cf) resonance occurs at system switching frequency；When DC bus electricity
Press UinWhen remaining unchanged, primary side rail currents Ip calculation formula is。
4. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 1, feature exist
In：It further include the track current constant current closed loop regulating mechanism in parallel with the power supply unit；The track current constant current closed loop tune
Section mechanism includes DC bus-bar voltage protection circuit, resonant network capacitance voltage protection circuit, track current sample circuit, DSP
Circuit and driving circuit；The input terminal of DC bus-bar voltage protection circuit connect with the current rectifying and wave filtering circuit, output end
It is connect with the input terminal of the DSP circuit；The input terminal of the resonant network capacitance voltage protection circuit and the primary side compensate
Circuit connection, output end are connect with the input terminal of the DSP circuit；The input terminal of the track current sample circuit is led with described
Rail primary side cable connection, output end are connect with the input terminal of the DSP circuit；The output end of the DSP circuit and the drive
Dynamic circuit connection, the driving circuit are connect with the high-frequency inverter circuit.
5. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 4, feature exist
In：The DC bus-bar voltage protection circuit includes the busbar voltage acquisition module being sequentially connected in series and signal conditioning module；It is described
Busbar voltage acquisition module is connect with the current rectifying and wave filtering circuit, and the signal conditioning module is connect with the DSP circuit.
6. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 4, feature exist
In：The resonant network capacitance voltage protection circuit includes the second compensating electric capacity voltage signal acquisition module being sequentially connected in series and letter
Number conditioning module；The second compensating electric capacity voltage signal acquisition module is connect with the primary side compensation circuit, the signal tune
Reason module is connect with the DSP circuit.
7. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 5, feature exist
In：The track current sample circuit includes the current Hall and signal conditioning circuit being sequentially connected in series；The current Hall and institute
Guide tracked primary side cable connection is stated, the signal conditioning module is connect with the DSP circuit.
8. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 5, feature exist
In：The busbar voltage acquisition module includes sampling resistor, and the signal conditioning module includes difference channel.
9. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 6, feature exist
In：The second compensating electric capacity voltage signal acquisition module includes sampling resistor, and the signal conditioning module includes circuit of checking the mark
And precise rectification circuit.
10. a kind of power supply unit for guide tracked non-contact electric energy transmission system according to claim 7, feature exist
In：The signal conditioning module includes difference channel and precise rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820284943.5U CN208142936U (en) | 2018-02-28 | 2018-02-28 | A kind of power supply unit for guide tracked non-contact electric energy transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820284943.5U CN208142936U (en) | 2018-02-28 | 2018-02-28 | A kind of power supply unit for guide tracked non-contact electric energy transmission system |
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| Publication Number | Publication Date |
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| CN208142936U true CN208142936U (en) | 2018-11-23 |
Family
ID=64286539
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820284943.5U Expired - Fee Related CN208142936U (en) | 2018-02-28 | 2018-02-28 | A kind of power supply unit for guide tracked non-contact electric energy transmission system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917164A (en) * | 2020-07-09 | 2020-11-10 | 中国电力科学研究院有限公司 | Wireless charging system applied to transformer substation inspection robot |
| CN113492884A (en) * | 2020-03-20 | 2021-10-12 | 株洲中车时代电气股份有限公司 | Three-source hybrid power locomotive and traction transmission system thereof |
| CN113630018A (en) * | 2021-07-23 | 2021-11-09 | 中国科学院电工研究所 | Frequency and intensity adjustable oscillating magnetic field generating device and generating method |
-
2018
- 2018-02-28 CN CN201820284943.5U patent/CN208142936U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113492884A (en) * | 2020-03-20 | 2021-10-12 | 株洲中车时代电气股份有限公司 | Three-source hybrid power locomotive and traction transmission system thereof |
| CN111917164A (en) * | 2020-07-09 | 2020-11-10 | 中国电力科学研究院有限公司 | Wireless charging system applied to transformer substation inspection robot |
| CN113630018A (en) * | 2021-07-23 | 2021-11-09 | 中国科学院电工研究所 | Frequency and intensity adjustable oscillating magnetic field generating device and generating method |
| CN113630018B (en) * | 2021-07-23 | 2023-02-10 | 中国科学院电工研究所 | Frequency and intensity adjustable oscillating magnetic field generating device and generating method |
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Granted publication date: 20181123 Termination date: 20200228 |