CN102969928A - Output power adjustment method for resonance type converter - Google Patents
Output power adjustment method for resonance type converter Download PDFInfo
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- CN102969928A CN102969928A CN201210414333XA CN201210414333A CN102969928A CN 102969928 A CN102969928 A CN 102969928A CN 201210414333X A CN201210414333X A CN 201210414333XA CN 201210414333 A CN201210414333 A CN 201210414333A CN 102969928 A CN102969928 A CN 102969928A
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Abstract
Provided is an output power adjustment method for a resonance type converter. The method comprises selecting the maximum k value meeting the requirements when a fundamental wave effective value of voltage output by the converter is smaller than or equal to the maximum value of k harmonic effective values according to the requirements of output power of the resonance type converter, enabling switching frequency to be reduced to 1/k of resonance frequency, enabling k harmonics to work in a resonance state, controlling the duty ratio of the output voltage to adjust effective values of the k harmonics and adjust the output power, utilizing harmonic components of the voltage output by the converter to transmit power, and enabling k to be a positive odd number. A hardware circuit does not need changing, the adjustment method has a wide power adjustment range in comparison with an ordinary resonance type converter, switching loss is small, and electromagnetic interference is low.
Description
Technical field
The present invention relates to a kind of control method of resonant current transformer power output.
Background technology
Resonance-type inverters is the core component of resonant current transformer.Resonance-type inverters relies on inductance and capacitor resonance to make switching device be operated in easily soft Switching Condition, wherein full-bridge phase-shifting resonance type inverter is widely applied in high-power field, by in phase-shifted full-bridge converter, introducing resonant inductance, resonant capacitance and Dead Time, make switching device realize that no-voltage is open-minded, when load is heavier, have preferably regulating effect.But needing under the less underload operating mode of power output, because phase shifting angle is very large, difficult realization no-voltage is open-minded, and switching loss is larger, causes resonance-type inverters to be greatly affected in load variations wide ranges and the larger occasion performance of mains fluctuations scope.
Patent 201110078847.8 has been announced a kind of method and device that reduces switching loss of phase-shifting full-bridge converter, by the optimum dead zone time is provided, switching loss is reduced to minimum, enlarge soft switching frequency scope, yet the loss when underloading is still larger.
Patent 200610061264.3 has been announced a kind of control method of phase whole-bridging circuit, makes circuit regulate the switching frequency of inverter or make the drive circuit discontinuous operation, the switching loss when reducing underloading by drive circuit under different loads.Although reduced loss, how not point out regulating frequency, simultaneously because the circuit discontinuous operation, load voltage ripple is very large.
The problem that existing phase-shifting resonance inverter control method exists is: (1) when underloading, phase shifting angle is very large, is difficult to realize soft switch, and switching loss is high; (2) when underloading, if make the drive circuit interval work, meeting is so that the load voltage ripple increasing; (3) during underloading, harmonic content is greater than first-harmonic content in the inverter output voltage, and harmonic content is large in the resonance current.
Summary of the invention
The objective of the invention is to solve the existing harmonic high frequency vibration shape inverter problem that loss is high when underloading, load voltage ripple is large, harmonic content is many, a kind of pulse duration modulation method that adopts the harmonic wave phase shift is proposed, when underloading, reduce the fundamental frequency of inverter output voltage, harmonic components in the control inverter output voltage is operated in resonance condition and comes transmitted power, by control harmonic wave effective value regulation output power.The present invention is specially adapted to the high-frequency resonant inverter circuit in wireless power transmission field.
Typical resonance type inverter output voltage frequency is identical with inverter switching frequency, and abundant harmonic wave is arranged in the inverter output voltage, and along with the reducing of inverter output voltage pulsewidth and frequency, the proportion that harmonic content accounts for enlarges markedly.
The technical scheme that technical solution problem of the present invention adopts is as follows:
The present invention does not change existing main circuit topological structure, adopts a kind of power regulating method, according to the size of power output, makes that different harmonic waves are operated in respectively resonance condition in the resonance-type inverters output voltage, and the effective value of controlling this harmonic wave comes regulation output power.
The power output regulating step is as follows:
1) at first, according to given resonance-type inverters power output, the perunit value G of first-harmonic and each harmonic effective value in the output voltage when obtaining the resonance-type inverters fundamental voltage output of voltage and being operated in resonance condition
k, k=1,3,5,7 ..., the first-harmonic effective value of described perunit value in the resonance-type inverters output voltage waveforms 50% duty ratio situation be as reference value, G
kMaximum is 1/k; K is positive odd number;
2) work as G
1During≤1/k, k=1,3,5,7 ..., find out the k value of the maximum that meets the demands, control resonance-type inverters switching frequency is the 1/k of resonance frequency, makes the k subharmonic be operated in resonance condition.For full-bridge phase shifting formula resonance-type inverters, come regulation output power by the phase shifting angle of regulating current transformer diagonal switching device driving pulse, when switching frequency is resonance frequency, if phase shifting angle is greater than the reference phase shifting angle
(k=1,3,5,7 ...), then switching frequency is become the 1/k of resonance frequency, make the k subharmonic be operated in resonance condition; For the semibridge system resonance-type inverters, the duty by regulating the pulse of converter switches device drive is regulation output power recently, when switching frequency is resonance frequency, if duty ratio is less than the reference duty ratio
(k=1,3,5,7 ...), then switching frequency is become the 1/k of resonance frequency, make the k subharmonic be operated in resonance condition;
3) when the k subharmonic is operated in resonance condition, if G
kWhen≤1/ (k+2), k=1,3,5,7 ..., make switching frequency be reduced to 1/ (k+2) of resonance frequency, make (k+2) subharmonic be operated in resonance condition.For full-bridge phase shifting formula resonance-type inverters, the reference phase shifting angle scope when the k subharmonic is operated in resonance condition is
(k=1,3,5,7 ...); For the semibridge system resonance-type inverters, the reference duty cycle range when the k subharmonic is operated in resonance condition is
(k=1,3,5,7 ...).
Resonance-type inverters has Dead Time, and for full-bridge phase shifting formula resonance-type inverters, this dead band time equivalence is certain phase shifting angle, and the reference phase shifting angle of described k subharmonic should deduct Dead Time equivalence phase shifting angle; For the semibridge system resonance-type inverters, this dead band time equivalence is the duty ratio of switching device driving pulse, and the reference duty ratio of described k subharmonic should deduct Dead Time equivalence duty ratio;
Power regulating method of the present invention is by reducing the switching frequency of resonance-type inverters, make that the k subharmonic is operated in resonance condition in the output voltage waveforms of resonance-type inverters, namely allow the k subfrequency approximate resonance frequency, recently regulate the harmonic wave effective value of resonance-type inverters output voltage waveforms by the duty of control resonance-type inverters output voltage waveforms, realize the adjusting of power output.
Compare with existing method, power regulating method of the present invention has following characteristics:
1, can significantly reduce inverter switching frequency, namely switching frequency is original 1/k only, and switching loss reduces greatly;
2, adopt harmonic propagation power, under the same power output, phase shift angular range or duty cycle adjustment scope are larger, and the power adjustments precision is higher;
3, adopt harmonic propagation power, its phase shifting angle is less, is operated in soft on off state easilier, and loss still less;
4, adopt harmonic propagation power, its each harmonic component frequency also significantly reduces, and electromagnetic interference reduces;
5, driving pulse is continuous, and load voltage ripple is little.
The present invention can be applicable to various electric energy wireless transmissions, induction heating and other possible high-frequency electrical energy conversion fields.
Description of drawings
Fig. 1 is full-bridge phase shifting formula resonant current transformer topology block diagram;
Fig. 2 is semibridge system resonant current transformer topology block diagram;
Fig. 3 is the harmonic content distribution map of full-bridge phase shifting formula resonance-type inverters output voltage under different phase shifting angles;
Fig. 4 is full-bridge phase shifting formula resonant current transformer power regulating method flow chart;
Fig. 5 is triple-frequency harmonics inverter output voltage and output current experimental waveform when phase shift 1.9 is spent when being operated in resonance condition;
Among the figure, 1 DC power supply, 2 resonance-type inverters, 3 inverter output variable transducers, 4 resonant capacitances, 5 inductance, 6 load input variable transducers, 7 loads, 8 drive circuits, 9 frequencies and phase detecting module, 10 master controllers.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment one is full-bridge phase shifting formula resonance-type inverters structure.
Figure 1 shows that full-bridge phase shifting formula resonant current transformer topology block diagram, its basic composition and connected mode are as follows.
Full-bridge phase shifting formula resonance-type inverters comprises: DC power supply 1, resonance-type inverters 2, inverter output variable transducer 3, resonant capacitance 4, inductance 5, load input variable transducer 6, load 7, drive circuit 8, frequency and phase detecting module 9, master controller etc. 10.
The positive and negative terminal of DC power supply 1 is connected respectively to the direct-flow input end of resonance inverter 2; Resonance inverter 2 output high voltages, resonance inverter 2 is continuous with two terminals of resonant capacitance 4 through series connection or parallel connection; Two terminals of resonant capacitance 4 are connected or are connected in parallel with inductance 5, and two terminals of inductance 5 link to each other with load 7.Be provided with inverter output variable transducer 3 between the output of resonance-type inverters 2 and resonant capacitance 4, inverter output variable transducer 3 comprises voltage sensor and current sensor, detects respectively output voltage and the output current of inverter 2.The inverter output voltage that inverter output variable transducer 3 detects and current signal send to frequency and phase detecting module 9, and frequency and phase detecting module 9 send to master controller 10 with the frequency signal of the inverter output current that obtains and the phase signal between inverter output voltage and the inverter output current.All signals that inverter output variable transducer 3 detects all send to master controller 10.Load input variable transducer 6 is arranged between inductance 5 and load 7, comprise voltage sensor and current sensor, respectively load 7 output voltages and the output current signal that detects sent to master controller 10.Main controller 10 sends the Driven by inverter pulse signal to drive circuit 8, and drive circuit 8 is connected to the driving terminals of each switching device of inverter.
Described DC power supply 1 can be the DC source that AC power obtains after rectification, also can be the DC source such as storage battery or capacitor.DC power supply can be voltage source, also can be current source, respectively corresponding voltage type inverter and current source inverter, below take the structure of voltage source inverter described resonance-type inverters 2 as example illustrates.
Described resonance-type inverters 2 is full-bridge topologies, and each switches set in every cover inversion unit can be individual devices, also can be series connection or the formation in parallel of a plurality of devices.Power device in the inverter frequency multiplier circuit can be the full-control type devices such as MOSFET, IGBT, IGCT, and device can carry antiparallel fly-wheel diode, also can add in addition antiparallel fly-wheel diode.
Described inverter output variable transducer 3 comprises inverter output voltage transducer and inverter 2 output current transducers.The inverter output voltage transducer is connected on two lead-out terminals of inverter 2; Inverter output current transducer is connected in series on the output line of inverter.
Described resonant capacitance 4 can be that single or a plurality of electric capacity form; Resonant capacitance 4 can be connected with inductance series, parallel or carry out connection in series-parallel and connect.
Described inductance 5 can be single inductance, also can be the leakage inductance of transformer, equivalent inductance that also can other circuit structures.
Described load input variable transducer 6 comprises load output voltage sensor and load output current transducer.The load output voltage sensor is connected on two lead-out terminals of resonance-type inverters 2; Load output current transducer is connected in series on the input line of load.
Described load 7 can be actual loading, also can be through the equivalent load of other circuit structure.
The drive pulse signal that described drive circuit 8 sends master controller 10 after treatment, each switching device that the output of drive circuit is connected to the inverter frequency multiplier circuit drives terminals, drives each switching device of inverter frequency multiplier circuit.
Inverter output voltage and output current that described frequency and phase detecting module 9 obtain according to inverter output variable transducer 3, calculate the phase difference of the frequency of inverter output current and inverter output voltage and output current and send to master controller 10, to realize the closed-loop control of described frequency and phase difference.
Described master controller 10, the signal according to load input variable transducer 6 and inverter output variable transducer 3 are sent calculates current power output, regulates the phase shifting angle of resonance-type inverters.Then phase shifting angle and switching frequency are judged, if unreasonable then change switching frequency and calculate phase shifting angle required under the same power output, through dead band control, formed drive pulse signal, send to drive circuit 8.
Full-bridge phase shifting formula resonance-type inverters power output control method step is as follows:
1) at first, according to given resonance-type inverters power output, the perunit value G of first-harmonic and each harmonic effective value in the output voltage when obtaining resonance-type inverters fundamental voltage output of voltage composition and being operated in resonance condition
k, k=1,3,5,7 ..., the first-harmonic effective value of described perunit value in the resonance-type inverters output voltage waveforms 50% duty ratio situation be as reference value, G
kMaximum is 1/k.G
kBe defined as
(k=1,3,5,7...) wherein, U
PkBe k subharmonic voltage effective value, U
DcBe direct current input side voltage, α is phase shifting angle, the G under the different phase shifting angle α
kDistribute as shown in Figure 3, limit because of length and only to be shown to 9 subharmonic among Fig. 3, wherein, shown in " 1 time " be the perunit value of resonance-type inverters fundamental voltage output of voltage composition effective value with the variation of phase shifting angle, the perunit value of the 3 subharmonic compositions that are respectively the resonance-type inverters output voltage, 5 subharmonic compositions, 7 subharmonic compositions and the 9 subharmonic composition effective values shown in " 3 times ", " 5 times ", " 7 times " and " 9 times " is with the variation of phase shifting angle.
2) work as G
1During≤1/k, k=1,3,5,7 ... find out the k value of the maximum that meets the demands, control resonance-type inverters switching frequency is the 1/k of resonance frequency, makes the k subharmonic be operated in resonance condition, and the phase shifting angle of regulating current transformer diagonal switching device driving pulse just can regulation output power, when switching frequency is resonance frequency, if phase shifting angle is greater than the reference phase shifting angle
(k=1,3,5,7...), then switching frequency is become the 1/k of resonance frequency, make the k subharmonic be operated in resonance condition.
3) when the k subharmonic is operated in resonance condition, if G
kWhen≤1/ (k+2), make switching frequency be reduced to 1/ (k+2) of resonance frequency, make (k+2) subharmonic be operated in resonance condition, control phase shifting angle regulation output power, the reference phase shifting angle scope when the k subharmonic is operated in resonance condition is
(k=1,3,5,7...).
Embodiment two: half-bridge resonance type converter topologies.
Figure 2 shows that semibridge system resonant current transformer topology block diagram, be with embodiment one difference: the resonance-type inverters 2 of (1) embodiment two is the semibridge system resonance-type inverters; (2) duty of semibridge system resonance-type inverters by the pulse of by-pass cock device drive regulation output power recently, and embodiment one comes regulation output power by the phase shifting angle of regulating resonance-type inverters.
Semibridge system resonance-type inverters power output control method step is as follows:
1) at first, according to given resonance-type inverters power output, the perunit value G of first-harmonic and each harmonic effective value in the output voltage when obtaining resonance-type inverters fundamental voltage output of voltage composition and being operated in resonance condition
k, k=1,3,5,7 ..., the first-harmonic effective value of described perunit value in the resonance-type inverters output voltage waveforms 50% duty ratio situation be as reference value, G
kMaximum is 1/k.
2) work as G
1During≤1/k, k=1,3,5,7 ... find out the k value of the maximum that meets the demands, control resonance-type inverters switching frequency is the 1/k of resonance frequency, makes the k subharmonic be operated in resonance condition, and regulating converter switches device drive pulse duty factor just can regulation output power, when switching frequency is resonance frequency, if duty ratio is less than the reference duty ratio
(k=1,3,5,7...), then switching frequency is become the 1/k of resonance frequency, make the k subharmonic be operated in resonance condition.
3) when the k subharmonic is operated in resonance condition, if G
kWhen≤1/ (k+2), make switching frequency be reduced to 1/ (k+2) of resonance frequency, make (k+2) subharmonic be operated in resonance condition, by-pass cock device drive pulse duty factor just can regulation output power, and the reference duty cycle range when the k subharmonic is operated in resonance condition is
(k=1,3,5,7...).
For power output adjustment process of the present invention is described, provided full-bridge phase-shifting resonance type inverter power control method flow chart shown in Figure 4, semibridge system resonance-type inverters power regulating method flow process and Fig. 4 roughly the same no longer provide here.
As shown in Figure 4, at first definite inverter power output that needs, required phase shifting angle when calculating resonance-type inverters fundamental voltage output of voltage is operated in resonance condition if fundamental voltage amplitude is greater than the maximum of k subharmonic effective value under this phase shifting angle, then forms the phase-shift pulse signal through dead band control; If fundamental voltage amplitude is less than or equal to the maximum of k subharmonic effective value under this phase shifting angle, calculate and by-pass cock frequency and phase shifting angle, form the phase-shift pulse signal through dead band control, export finally by drive circuit.
Fig. 5 is the experimental waveform of full-bridge phase shifting formula resonant current transformer power regulating method among the present invention, inverter output voltage and output current wave (voltage: 125V/ lattice, electric current: the 34A/ lattice) during 1.9 ° of triple-frequency harmonics phase shifts.
Above-described with reference to phase shifting angle with reference to duty ratio, according to actual conditions certain mobility scale can be arranged.
Claims (5)
1. the power output control method of a resonant current transformer, it is characterized in that, described power output control method is by reducing the switching frequency of resonance-type inverters, make in the output voltage waveforms of resonance-type inverters certain harmonic operation in resonance condition, recently regulate certain subharmonic effective value of resonance-type inverters output voltage by the duty of control resonance-type inverters output voltage, realize the adjusting of power output.
2. the power output control method of resonant current transformer according to claim 1 is characterized in that described power output regulating step is as follows:
1) at first, according to given resonance-type inverters power output, the perunit value G of first-harmonic and each harmonic effective value in the output voltage when obtaining the resonance-type inverters fundamental voltage output of voltage and being operated in resonance condition
k, k=1,3,5,7 ..., the first-harmonic effective value of described perunit value in the resonance-type inverters output voltage waveforms 50% duty ratio situation be as reference value, G
kMaximum is 1/k; K is positive odd number;
2) work as G
1During≤1/k, k=1,3,5,7 ..., find out the k value of the maximum that meets the demands, control resonance-type inverters switching frequency is the 1/k of resonance frequency, make the k subharmonic be operated in resonance condition, recently regulate k subharmonic effective value in the resonance-type inverters output voltage by the duty of control resonance-type inverters output voltage, realize the adjusting of power output;
3) when the k subharmonic is operated in resonance condition, if G
kWhen≤1/ (k+2), k=1,3,5,7 ..., then the control switch frequency is reduced to 1/ (k+2) of resonance frequency, makes (k+2) subharmonic be operated in resonance condition, duty by control resonance-type inverters output voltage is recently regulated (k+2) subharmonic effective value in the resonance-type inverters output voltage, realizes the adjusting of power output.
3. resonant current transformer power regulating method according to claim 2 is characterized in that, for full-bridge phase shifting formula resonance-type inverters, comes regulation output power by the phase shifting angle of regulating current transformer diagonal switching device driving pulse; Described power output regulating step 2) in, when switching frequency is resonance frequency, if phase shifting angle is greater than the reference phase shifting angle
(k=1,3,5,7...), then switching frequency is become the 1/k of resonance frequency, make the k subharmonic be operated in resonance condition; Described power output regulating step 3) in, the reference phase shifting angle scope when the k subharmonic is operated in resonance condition is
(k=1,3,5,7...).
4. resonant current transformer power regulating method according to claim 2, it is characterized in that, for the semibridge system resonance-type inverters, duty by regulating the pulse of converter switches device drive is regulation output power recently, described power output regulating step 2) in, when switching frequency is resonance frequency, if duty ratio is less than the reference duty ratio
(k=1,3,5,7...) then switching frequency is become the 1/k of resonance frequency, make the k subharmonic be operated in resonance condition; Described power output regulating step 3) in, the reference duty cycle range when the k subharmonic is operated in resonance condition is
(k=1,3,5,7...).
5. resonant current transformer power regulating method according to claim 1, it is characterized in that, described resonance-type inverters has Dead Time, for full-bridge phase shifting formula resonance-type inverters, this dead band time equivalence is certain phase shifting angle, and the reference phase shifting angle of described k subharmonic should deduct Dead Time equivalence phase shifting angle; For the semibridge system resonance-type inverters, this dead band time equivalence is the duty ratio of switching device driving pulse, and the reference duty ratio of described k subharmonic should deduct Dead Time equivalence duty ratio.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123552A (en) * | 2016-11-29 | 2018-06-05 | 三星电机株式会社 | Wireless power transmitter |
| CN110870190A (en) * | 2018-03-15 | 2020-03-06 | 岛田理化工业株式会社 | Inverter device and control method of inverter device |
| CN112204866A (en) * | 2019-08-29 | 2021-01-08 | 深圳市大疆创新科技有限公司 | Drive circuit, drive circuit board and driver |
| CN112491277A (en) * | 2020-11-25 | 2021-03-12 | 青岛鼎信通讯股份有限公司 | Method for improving efficiency of power electronic transformer through dead time self-adaption |
| CN113972843A (en) * | 2021-10-25 | 2022-01-25 | 珠海格力电器股份有限公司 | Frequency tracking control method and device and power supply |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318926A (en) * | 2006-05-26 | 2007-12-06 | Mitsubishi Electric Corp | Power conversion device |
| CN202424570U (en) * | 2012-01-12 | 2012-09-05 | 河南科技大学 | Inductance-capacitance (LC) resonant driving circuit for ultrasonic motor |
-
2012
- 2012-10-25 CN CN201210414333.XA patent/CN102969928B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318926A (en) * | 2006-05-26 | 2007-12-06 | Mitsubishi Electric Corp | Power conversion device |
| CN202424570U (en) * | 2012-01-12 | 2012-09-05 | 河南科技大学 | Inductance-capacitance (LC) resonant driving circuit for ultrasonic motor |
Non-Patent Citations (2)
| Title |
|---|
| 刘汉奎等: "一种数字化小功率金卤灯电子镇流器的研究", 《电力电子技术》, vol. 40, no. 6, 31 December 2006 (2006-12-31) * |
| 李华峰等: "基于LC谐振的超声电机驱动器的研究", 《中国电机工程学报》, vol. 25, no. 23, 31 December 2005 (2005-12-31) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123552A (en) * | 2016-11-29 | 2018-06-05 | 三星电机株式会社 | Wireless power transmitter |
| CN108123552B (en) * | 2016-11-29 | 2021-08-10 | 株式会社Wits | Wireless power transmitter |
| CN110870190A (en) * | 2018-03-15 | 2020-03-06 | 岛田理化工业株式会社 | Inverter device and control method of inverter device |
| CN110870190B (en) * | 2018-03-15 | 2023-12-05 | 岛田理化工业株式会社 | Inverter device and control method for inverter device |
| CN112204866A (en) * | 2019-08-29 | 2021-01-08 | 深圳市大疆创新科技有限公司 | Drive circuit, drive circuit board and driver |
| CN112491277A (en) * | 2020-11-25 | 2021-03-12 | 青岛鼎信通讯股份有限公司 | Method for improving efficiency of power electronic transformer through dead time self-adaption |
| CN112491277B (en) * | 2020-11-25 | 2023-02-17 | 青岛鼎信通讯股份有限公司 | Method for improving efficiency of power electronic transformer through dead time self-adaption |
| CN113972843A (en) * | 2021-10-25 | 2022-01-25 | 珠海格力电器股份有限公司 | Frequency tracking control method and device and power supply |
| CN113972843B (en) * | 2021-10-25 | 2023-10-10 | 珠海格力电器股份有限公司 | Frequency tracking control method, device and power supply |
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