CN104617685B - A kind of contact inductive electric energy transmission control unit and method thereof - Google Patents
A kind of contact inductive electric energy transmission control unit and method thereof Download PDFInfo
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Abstract
A kind of contact inductive electric energy transmission control unit, including former rim portion and secondary part, it is characterized in that: described former edge is divided into capacitances in series, described secondary part is that electric capacity is in parallel, described primary and secondary side is respectively provided on two sides with two closed loops, each closed loop designs an independent control, controls former limit resonance current and secondary output voltage simultaneously.It is an advantage of the current invention that can the most dynamically control ICPT system former limit resonance current and secondary output voltage, it is ensured that system is stable electric power transmission in the case of load disturbance；Former limit, secondary control circuit independent design, be made without signal communication between former limit, secondary.
Description
Technical field
The present invention relates to contact inductive electric energy transmission field, a kind of contact inductive electric energy of specially ICPT system passes
Defeated control device, is directed to a kind of contact inductive electric energy transfer control method.
Background technology
Contact inductive electric energy transmission (Inductively coupled power transfer, ICPT) be a kind of by
The new electric energy transmission technology that electromagnetic induction principle realizes.This technology has broken away from the conventional electrical way of contact, overcomes
Conventional electrical contact power supply mode drawback under the adverse circumstances such as high temperature, high humidity, high corrosion.
Contact inductive electric energy transmission technology has strict demand, especially at electric automobile to the relative position of transmission equipment
Charging application in, if there is relative change in location during charging electric vehicle, the coefficient of coup of system will by considerable influence,
Thus cause output voltage to change, also affect the stability of former limit resonance current, it is impossible to ensure the steady of system capacity simultaneously
Fixed transmission.And when load dynamically changes, the reflected umpedance produced on former limit also can change and therewith to former limit resonance
Electric current and secondary output voltage produce considerable influence, it is impossible to ensure the stable transmission of system power, be also unfavorable for secondary energy
The stable pickup of amount.
For such issues that, Chinese scholars proposes different control methods, including decoupling method, constant current sectionalized control method,
Electric capacity switching at runtime method, former limit active control etc..But former limit resonance current and secondary are not the most exported by these methods
Voltage the most dynamically controls.
Summary of the invention
The purpose of the application is to provide control contact inductive electric energy transmission system Central Plains limit resonance current and secondary simultaneously
A kind of composite control apparatus of output voltage and method thereof, the electric energy transmission shakiness caused during to solve load dynamically change
Fixed problem.
The object of the present invention is achieved like this:
A kind of contact inductive electric energy transmission control unit, including former rim portion and secondary part, it is characterised in that: institute
Stating former edge is divided into capacitances in series, described secondary part to be that electric capacity is in parallel, and described primary and secondary side is respectively provided on two sides with two
Individual closed loop, designs an independent control, controls former limit resonance current and secondary simultaneously in each closed loop
Output voltage.
Further, described former rim portion is by direct voltage source Udc(1), high-frequency inversion link and former limit resonant network composition.
Further, described high-frequency inversion link by four full-controlled switch pipes and anti-paralleled diode one (2) thereof, anti-the most also
Connection diode two (3), anti-paralleled diode three (4) and anti-paralleled diode four (5) composition, described high-frequency inversion
DC input voitage is converted into high frequency square wave voltage and exports former limit resonant network by link.
Further, described former limit resonant network is by compensating electric capacity C1(7) with primary coil inductance L1It is (8) in series,
Its role is to be converted into high frequency square wave voltage high frequency sinusoidal resonance current, and around primary coil (8), produce height
Frequently magnetic field.
Further, described secondary part includes secondary series resonant network, uncontrollable rectifier bridge (11), boosting rectifier control net
Network and load RL(16), the coupling between being enclosed by former and deputy sideline, secondary coil inductance L2(9) sensing is produced on
Electromotive force, and realize resonance by secondary series resonant network.
Further, described secondary resonant network is by compensating electric capacity C2And secondary coil inductance L (10)2And joint group (9)
Become.
Further, described uncontrollable rectifier bridge (11) is for the rectification of high frequency ac signal, described boosting rectifier control network
By filter inductance Lf(12), filter capacitor Cf(15), diode (14) and full-controlled switch pipe S (13) composition.
And then, the present invention also provides for a kind of control method based on said apparatus, it is characterised in that: described former limit closes
Loop realize step:
1), former limit resonance current is detected by current transformer (6)；
2) virtual value of resonance current, is calculated by signal processing module (23)；
3), the resonance current virtual value obtained and resonance current effective value expected value are entered in primary side comparator (22)
Go to compare and obtain resonance current error；
4), resonance current error is input to primary controller (21) as input signal；
5), primary controller (21) output signal controls output phase shifting angle by former limit amplitude limiter (20), as defeated
Enter signal input phase modulation module (19)；
6), phase modulation module (19) produce high-frequency inverter circuit gate-control signal, as input signal input former limit
Driver (18) controls high-frequency inverter circuit, and then controls former limit input voltage；
7), by controlling input voltage control former limit, former limit resonance current.
Further, described secondary closed-loop path realize step:
1), secondary output voltage is detected by voltage transformer (17)；
2), the output voltage obtained and output voltage expected value are compared in secondary amplitude limiter (26) obtain defeated
Go out voltage error；
3), output voltage error is input to secondary controller (27) as input signal；
4), secondary controller (27) output signal controls output duty cycle by secondary amplitude limiter (26), as defeated
Enter signal input duty cycle modulation module (25)；
5), duty ratio modulation module (25) produce boost chopper switching signal, as input signal input pair
Limit driver (24) controls conducting and the disconnection of boost chopper switching tube (13)；
6), by controlling conducting and the disconnection control secondary output voltage of boost chopper switching tube (13).
Further, described former limit, secondary controller are specially former limit PID controller (21), secondary PID controller (27).
Further, the parameter of described former limit PID controller (21) is KP=0.0002, KI=3, KD=0.0003；
The parameter of secondary PID controller (27) is KP=0.0165, KI=3.9, KD=0.001, described former limit resonance electricity
Stream virtual value expected value iref=41A, secondary output voltage expected value uref=70V.
Further, closed-loop path, described former limit is achieved by the steps of:
1), former limit resonance current i is detected by current transformer (6)p(t)；
2) virtual value of resonance current, is calculated by signal processing module (23)
3), resonance current virtual value I that will obtainpWith resonance current effective value expected value irefIn primary side comparator (22)
In compare and obtain resonance current error e1=iref-Ip；
4), by resonance current error e1It is input to former limit PID controller (21) as input signal；
5), the output signal on former limit PID controller (21) control output phase shifting angle α by former limit amplitude limiter (20),
α is as input signal input phase modulation module (19)；
6), phase modulation module (19) produce high-frequency inverter circuit gate-control signal, as input signal input former limit
Driver (18) controls high-frequency inverter circuit, and then controls former limit input voltage；
7), by controlling the former limit input voltage former limit resonance current i of controlp。
Further, described secondary closed-loop path is achieved by the steps of:
1), secondary output voltage u is detected by voltage transformer (17)o；
2), the output voltage u that will obtainoWith output voltage expected value urefSecondary comparator (28) compares
To output voltage error e2=uref-uo；
3), by output voltage error e2It is input to secondary PID controller (27) as input signal；
4), the output signal of secondary PID controller (27) control output duty cycle d by secondary amplitude limiter (26),
As input signal input duty cycle modulation module (25)；
5), duty ratio modulation module (25) produce boost chopper switching tube switching signal, as input signal
Input secondary driver (24) controls conducting and the disconnection of boost chopper switching tube (13)；
6), by controlling conducting and the disconnection control secondary output voltage of boost chopper switching tube (13).
The invention have the advantage that and design former limit, secondary controller simultaneously, ICPT system former limit resonance can be controlled simultaneously
Electric current and secondary output voltage, it is ensured that ICPT system is stable electric power transmission in the case of load disturbance；Former limit, secondary
Control circuit independent design, it is not necessary to carry out signal communication between former limit, secondary.
Accompanying drawing explanation
The control principle drawing of Fig. 1: the present invention.
Fig. 2: control principle drawing embodiment of the present invention.
Label in figure: S1、S2、S3、S4High-frequency inverter circuit igbt, S boosting is cut
Wave circuit switching tube, C1Former limit compensates electric capacity, C2Secondary compensates electric capacity, CfBoost chopper is filtered
Ripple electric capacity, L1Former limit electromagnetic coupled coil inductance, L2Secondary electromagnetic coupled coil inductance, LfBoosting
Chopper circuit filter inductance, RLLoad equivalent resistance, UdcDirect-current input power supplying, urefSecondary exports
Voltage expected value, the former limit of M, secondary electromagnetic coupled coil mutual inductance coefficient, irefThe former limit resonance current peak period
Prestige value, α phase shifting angle, d dutycycle, e1Former limit resonance current error, e2Secondary output voltage
Error.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples,
The present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this
Invention, is not intended to limit the present invention.
Being illustrated in figure 1 the control principle drawing of SP (the most former limit, secondary controller) type ICPT system, one is non-to be connect
Touch induction electric energy transmission control unit and include that former limit capacitances in series, secondary electric capacity are in parallel, coupled by high frequency magnetic field
To complete the transmission of energy.Former rim portion is by direct voltage source Udc(1), high-frequency inversion link and former limit resonant network group
Become.Wherein, high-frequency inversion link is by four full-controlled switch pipes and anti-paralleled diode one (2), inverse parallel two pole
Pipe two (3), anti-paralleled diode three (4) and anti-paralleled diode four (5) composition, change DC input voitage
High frequency square wave voltage is become to export former limit resonant network.Former limit resonant network is by compensating electric capacity C1And primary coil (7)
Inductance L1(8) in series, its role is to be converted into high frequency square wave voltage high frequency sinusoidal resonance current, and former
Sideline circle (8) around produces high frequency magnetic field.
Wherein, secondary part includes secondary series resonant network, uncontrollable rectifier bridge (11), boosting rectifier control network and bears
Carry RL(16), the coupling between being enclosed by former and deputy sideline, secondary coil inductance L2(9) induction electromotive force is produced on,
And realize resonance by secondary series resonant network.Secondary resonant network is by compensating electric capacity C2(10) and secondary coil electricity
Sense L2(9) compose in parallel, be mainly used in improving power transmission efficiency, and then strengthen the power transmission performance of system.
Uncontrollable rectifier bridge (11) is for the rectification of high frequency ac signal, and boosting rectifier control network is by filter inductance Lf(12)、
Filter capacitor Cf(15), diode (14) and full-controlled switch pipe S (13) composition, be mainly used in regulation output
Voltage, reduces output voltage ripple, effectively suppresses harmonic current simultaneously.
Closed-loop path, former limit in said apparatus is achieved by the steps of:
1), former limit resonance current is detected by current transformer (6)；
2) virtual value of resonance current, is calculated by signal processing module (23)；
3), the resonance current virtual value obtained and resonance current effective value expected value are entered in primary side comparator (22)
Go to compare and obtain resonance current error；
4), resonance current error is input to primary controller (21) as input signal；
5), primary controller (21) output signal controls output phase shifting angle by former limit amplitude limiter (20), as defeated
Enter signal input phase modulation module (19)；
6), phase modulation module (19) produce high-frequency inverter circuit gate-control signal, as input signal input former limit
Driver (18) controls high-frequency inverter circuit, and then controls former limit input voltage；
7), by controlling input voltage control former limit, former limit resonance current.
Secondary closed-loop path is achieved by the steps of:
1), secondary output voltage is detected by voltage transformer (17)；
2), the output voltage obtained and output voltage expected value are compared in secondary amplitude limiter (26) obtain defeated
Go out voltage error；
3), output voltage error is input to secondary controller (27) as input signal；
4), secondary controller (27) output signal controls output duty cycle by secondary amplitude limiter (26), as defeated
Enter signal input duty cycle modulation module (25)；
5), duty ratio modulation module (25) produce boost chopper switching signal, as input signal input pair
Limit driver (24) controls conducting and the disconnection of boost chopper switching tube (13)；
6), by controlling conducting and the disconnection control secondary output voltage of boost chopper switching tube (13).
Fig. 2 is a kind of simple application in SP type ICPT system of the present invention, and the former limit in figure, secondary controller are concrete
For former limit PID controller (21), secondary PID controller (27).
The parameter on limit, Fig. 2 Central Plains PID controller (21) is KP=0.0002, KI=3, KD=0.0003；Secondary
The parameter of PID controller (27) is KP=0.0165, KI=3.9, KD=0.001.Take former limit resonance current virtual value
Expected value iref=41A, secondary output voltage expected value uref=70V.
Closed-loop path, former limit is achieved by the steps of:
1), former limit resonance current i is detected by current transformer (6)p(t)；
2) virtual value of resonance current, is calculated by signal processing module (23)
3), resonance current virtual value I that will obtainpWith resonance current effective value expected value irefIn primary side comparator (22)
In compare and obtain resonance current error e1=iref-Ip；
4), by resonance current error e1It is input to former limit PID controller (21) as input signal；
5), the output signal on former limit PID controller (21) control output phase shifting angle α by former limit amplitude limiter (20),
α is as input signal input phase modulation module (19)；
6), phase modulation module (19) produce high-frequency inverter circuit gate-control signal, as input signal input former limit
Driver (18) controls high-frequency inverter circuit, and then controls former limit input voltage；
7), by controlling the former limit input voltage former limit resonance current i of controlp。
Secondary closed-loop path is achieved by the steps of:
1), secondary output voltage u is detected by voltage transformer (17)o；
2), the output voltage u that will obtainoWith output voltage expected value urefSecondary comparator (28) compares
To output voltage error e2=uref-uo；
3), by output voltage error e2It is input to secondary PID controller (27) as input signal；
4), the output signal of secondary PID controller (27) control output duty cycle d by secondary amplitude limiter (26),
As input signal input duty cycle modulation module (25)；
5), duty ratio modulation module (25) produce boost chopper switching tube switching signal, as input signal
Input secondary driver (24) controls conducting and the disconnection of boost chopper switching tube (13)；
6), by controlling conducting and the disconnection control secondary output voltage of boost chopper switching tube (13).
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included in protection scope of the present invention it
In.
Claims (4)
1. a contact inductive electric energy transmission control unit, including former rim portion and secondary part, it is characterised in that: institute
Stating former edge is divided into capacitances in series, described secondary part to be that electric capacity is in parallel, and described primary and secondary side both sides are provided with two
Individual closed loop, in each closed loop design an independent control, control simultaneously former limit resonance current and
Secondary output voltage, described former rim portion is by direct voltage source Udc(1), high-frequency inversion link and former limit Resonance Neural Network
Network forms, described high-frequency inversion link by four full-controlled switch pipes and anti-paralleled diode one (2) thereof, anti-the most also
Connection diode two (3), anti-paralleled diode three (4) and anti-paralleled diode four (5) composition, described high frequency
DC input voitage is converted into high frequency square wave voltage and exports former limit resonant network by inversion link, and described former limit is humorous
Vibrating network is by compensating electric capacity C1(7) in series with primary coil (8), its role is to high frequency square wave electricity
Pressure is converted into high frequency sinusoidal resonance current, and produces high frequency magnetic field, described secondary portion around primary coil (8)
Divide and include secondary series resonant network, uncontrollable rectifier bridge (11), boosting rectifier control network and load RL(16),
Coupling between being enclosed by former and deputy sideline, secondary coil (9) is produced induction electromotive force, and passes through secondary also
Connection resonant network realizes resonance, and described secondary series resonant network is by compensating electric capacity C2And secondary coil (9) (10)
Composing in parallel, described uncontrollable rectifier bridge (11) is for the rectification of high frequency ac signal, described boosting rectifier control net
Network is by filter inductance Lf(12), filter capacitor Cf(15), diode (14) and full-controlled switch pipe S (13)
Composition.
2. using a control method for contact inductive electric energy transmission control unit described in claim 1, its feature exists
The step that realizes in: closed-loop path, described former limit:
1), former limit resonance current is detected by current transformer (6)；
2) virtual value of resonance current, is calculated by signal processing module (23)；
3), the resonance current virtual value obtained and resonance current effective value expected value are compared in primary side comparator (22)
Relatively obtain resonance current error；
4), resonance current error is input to primary controller (21) as input signal；
5), primary controller (21) output signal controls output phase shifting angle by former limit amplitude limiter (20), as input letter
Number input phase modulation module (19)；
6), phase modulation module (19) produce high-frequency inverter circuit gate-control signal, as input signal input former limit drive
Device (18) controls high-frequency inverter circuit, and then controls former limit input voltage；
7), by controlling input voltage control former limit, former limit resonance current.
Control method the most according to claim 2, it is characterised in that:
Described secondary closed-loop path realize step:
1), secondary output voltage is detected by voltage transformer (17)；
2), the output voltage obtained and output voltage expected value are compared in secondary amplitude limiter (26) obtain output electricity
Hold up difference；
3), output voltage error is input to secondary controller (27) as input signal；
4), secondary controller (27) output signal controls output duty cycle by secondary amplitude limiter (26), as input letter
Number input duty cycle modulation module (25)；
5), duty ratio modulation module (25) produce boost chopper switching signal, as input signal input secondary drive
Dynamic device (24) controls conducting and the disconnection of boost chopper switching tube (13)；
6), by controlling conducting and the disconnection control secondary output voltage of boost chopper switching tube (13).
Control method the most according to claim 3, it is characterised in that: described former limit, secondary controller are the most former
Limit PID controller (21), secondary PID controller (27), the parameter of described former limit PID controller (21)
For KP=0.0002, KI=3, KD=0.0003；The parameter of secondary PID controller (27) is KP=0.0165,
KI=3.9, KD=0.001, described former limit resonance current virtual value expected value iref=41A, the secondary output voltage phase
Prestige value uref=70V
Closed-loop path, described former limit is achieved by the steps of:
1), former limit resonance current i is detected by current transformer (6)p(t)；
2) virtual value of resonance current, is calculated by signal processing module (23)
3), resonance current virtual value I that will obtainpWith resonance current effective value expected value irefPrimary side comparator (22) is entered
Go to compare and obtain resonance current error e1=iref-Ip；
4), by resonance current error e1It is input to former limit PID controller (21) as input signal；
5), the output signal on former limit PID controller (21) controls output phase shifting angle α, α work by former limit amplitude limiter (20)
For input signal input phase modulation module (19)；
6), phase modulation module (19) produce high-frequency inverter circuit gate-control signal, as input signal input former limit drive
Device (18) controls high-frequency inverter circuit, and then controls former limit input voltage；
7), by controlling the former limit input voltage former limit resonance current i of controlp；
Described secondary closed-loop path is achieved by the steps of:
1), secondary output voltage u is detected by voltage transformer (17)o；
2), the output voltage u that will obtainoWith output voltage expected value urefSecondary comparator (28) compares obtain defeated
Go out voltage error e2=uref-uo；
3), by output voltage error e2It is input to secondary PID controller (27) as input signal；
4), the output signal of secondary PID controller (27) controls output duty cycle d, work by secondary amplitude limiter (26)
For input signal input duty cycle modulation module (25)；
5), duty ratio modulation module (25) produce boost chopper switching tube switching signal, as input signal input
Secondary driver (24) controls conducting and the disconnection of boost chopper switching tube (13)；
6), by controlling conducting and the disconnection control secondary output voltage of boost chopper switching tube (13).
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| JP5772851B2 (en) * | 2013-03-21 | 2015-09-02 | 株式会社デンソー | Non-contact power feeding device |
| CN103855764B (en) * | 2014-01-14 | 2016-05-18 | 深圳市普林泰克科技有限公司 | Mobile device detection method on a kind of wireless charger emission end surface |
| CN104113120A (en) * | 2014-07-31 | 2014-10-22 | 奇瑞汽车股份有限公司 | Wireless charging system and electric vehicle |
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