CN103259345A - Parallel resonance series composition of non-contact power supply system of traveling car - Google Patents
Parallel resonance series composition of non-contact power supply system of traveling car Download PDFInfo
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- CN103259345A CN103259345A CN2013101873710A CN201310187371A CN103259345A CN 103259345 A CN103259345 A CN 103259345A CN 2013101873710 A CN2013101873710 A CN 2013101873710A CN 201310187371 A CN201310187371 A CN 201310187371A CN 103259345 A CN103259345 A CN 103259345A
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Abstract
Parallel resonance series composition of a non-contact power supply system of a traveling car is composed of a soft switching power supply, a non-contact power supply primary side circuit and a secondary side electricity pickup circuit. The switching power supply is the soft switching power supply and is composed of a rectifier bridge, a filter circuit, an EMI circuit, an inverter bridge, a switching power supply resonance circuit, a high-frequency transformer and the like. The non-contact primary side circuit is composed of a filter inductor (14), a parallel resonance capacitor (16), a non-contact power supply primary side circuit cable (4) and the like. The non-contact secondary side electricity pickup circuit is composed of an electricity pickup, a commutating and voltage-stabilizing circuit and the like. The parallel resonance series composition of the non-contact power supply system of the traveling car has the advantages that a primary side current (22) which is larger than the current of an output circuit (20) of the soft switching power supply (1) is generated trough a small-capacity IGBT under the function of parallel resonance, the cost of the soft switching power supply is reduced, and the efficiency of the system is improved. The soft switching power supply is adopted, the voltage output to the high-frequency transformer is close to a sine wave, and the cost of a filter is reduced.
Description
Technical field
The present invention relates to a kind of contactless power supply system that adopts the series parallel resonance method to constitute, belong to travelling car power supply, the charging device in non-contact power field.
Background technology
For travelling car can be used in various adverse circumstances and particular surroundings, break away from and use the charger charging, change troubles such as battery and mobile device traction power line, the demand of non-contact power technology (CPS) is more and more.At present, contactless power supply device practicability and come into our daily life gradually progressively.Realize that the non-contact electric energy transmission technology mainly comprises three kinds of forms: 1, induction coupled mode; 2, radio acceptance type; 3, resonance type.
The travelling car power supply motor-driven carrier (EMS of system, Electrified Monorail System) is also referred to as the electric monorail conveying system, it is the automated system that has conveying, transports goods, combine with technology such as mechanical, electric, information, be widely used in that automobile, metallurgy, electronic product etc. are in enormous quantities, on the flow production line of many kinds, in extensive storage process, also bringing into play important effect in addition.
Travelling car has three kinds of supply power modes at present, sliding contacting mode, cable-pulling chain mode, battery charge.The shortcoming that these modes have is, needs to safeguard, operating cost is than higher, reliability, fail safe deficiency in cleannes under the high and inflammable and explosive environment.Adopt the non-contact power mode can imitate the shortcoming that has overcome above-mentioned three kinds of supply power modes.The advantage of non-contact power is: 1) high mobility, flexibility, and unrestricted to speed and the range ability of motor-driven carrier, be applicable to the circuit that layout is complicated simultaneously.2) operating cost is low, and cost once drops into, and can reach almost non-maintaining.3) safe: as not electrically contact and nuditing wire, avoid potential safety hazards such as electric spark and electric shock, can be used for various adverse circumstances and particular surroundings.4) environmental friendliness: noiseless and dust discharge, and have got rid of the battery relevant environment and have polluted green safety.5) reliability height: system does not have the physics friction, has exempted physics loss and chemical corrosion, and reliability service is guaranteed.
Non-contact power of the present invention belongs to induction coupled mode, its principle mainly is the adjacent certain distance with second siding ring of first siding ring, in first siding ring, add the high frequency AC great current, be that media induces electromotive force at second siding ring with the electromagnetic field, through over commutation, filtering, voltage stabilizing, be portable terminal power supply or charging, thereby realize the electric energy transmission.First siding ring can be laid along the orbit of travelling car, perhaps be laid on the fixedly charge position of travelling car, and secondary coil is installed on the travelling car on the FERRITE CORE of an E type or shape such as U-shaped.In order to reduce cost and to raise the efficiency, the present invention has adopted the method for parallel resonance series compensation to constitute contactless power supply system.
Summary of the invention
In order to bring into play the advantageous characteristic of non-contact power, expand its scope of application, the problem to be solved in the present invention is to reduce the cost of contactless power supply system, improves its electric energy efficiency of transmission.Technical scheme of the present invention is as follows:
A kind of contactless power supply system of electronic travelling car (comprises that optional high-frequency isolation transformer, the former limit of non-contact power circuit (cable of the former limit circuit that lays by former limit compensating circuit with along travelling car orbit or charge position is formed), non-contact power secondary circuit form by soft switching power.
Soft switching power of the present invention mainly is made up of rectifier bridge, filter circuit, EMI circuit, inverter bridge, Switching Power Supply series resonance inductance, Switching Power Supply series resonance electric capacity and high-frequency isolation transformer etc., and its effect is to produce the required high frequency electric source of the former limit of non-contact power circuit and play buffer action.Adopt soft switching power, not only improved the efficient of Switching Power Supply, also make the input and output voltage of high frequency transformer approach sine wave, simplified the required Filter Structures of the former limit of non-contact power circuit, reduced system cost, improved the efficient of system.
The magnetic core of high-frequency isolation transformer can consider to select for use ultracrystallite material and ferrite, and coil adopts enamel-cover twisted wire (Litz-wire), to overcome kelvin effect, reduces loss.
The former limit of the non-contact power of native system circuit, the cable of former limit circuit is the load of former limit circuit, lays the fixedly charge position of the travelling car that perhaps is laid in along the orbit of travelling car.Parallel resonance electric capacity, current limliting small inductor constitute antiresonant circuit with the connecting of cable of additional inductor/building-out capacitor and former limit circuit.Wherein additional inductor/building-out capacitor is optional device.When the cable of former limit circuit more in short-term, its inductance is less, then needs the additional inductor of connecting, and induction reactance of itself and the series connection of former limit cable is equated with the capacitive reactance of parallel resonance electric capacity 16, satisfies the parallel resonance condition; When the cable of former limit circuit was long, its inductance was bigger, then needs series compensation capacitance, offset the induction reactance of a part of former limit cable, satisfied the parallel resonance condition.When the cable length of former limit circuit is very long, be limited to the withstand voltage and cost of building-out capacitor, can adopt the mode of a plurality of building-out capacitors of series connection, reach condition of resonance.The current limliting small inductor is to stop higher harmonic current to inject parallel resonance electric capacity, to protect not overcurrent of parallel resonance electric capacity.The effect of filter inductance is the harmonic wave of filtering Switching Power Supply, reduces the voltage harmonic that is added on parallel resonance electric capacity, the current limliting small inductor branch road.The variation of the cable data of the former limit circuit that is brought by load, and the variation of the capacitance of the parallel resonance electric capacity that causes of temperature, building-out capacitor etc. make circuit break away from resonance point, solve by the frequency of automatic by-pass cock power supply.
Because the former limit circuit of contactless power supply system needs the big electric current of high frequency, when designing, system adopted parallel resonance, its objective is with the inductive current in the cable of the former limit of the condenser current compensation circuit in the parallel resonance electric capacity, phase relation for each electric current of antiresonant circuit, the phase phasic difference of capacitance current and inductive current is near 180 ℃, under the condition of resonance, though cable and the current ratio in the parallel resonance electric capacity of former limit circuit are bigger, the output voltage same-phase of the output current of Switching Power Supply and Switching Power Supply, be the active current that this system consumes, be far smaller than the needed current value of cable of former limit circuit.The power designs that the capacity of Switching Power Supply can consume according to load and system.Make the capacity of switching tube, high-frequency isolation transformer and filter inductance etc. reduce greatly, system cost declines to a great extent.Adjust design parameter, make inductive current in the cable of the electric current of parallel resonance electric capacity, former limit circuit much larger than the output current of Switching Power Supply, just can when exporting smaller electric current, Switching Power Supply produce the primary current of very big contactless power supply system, to induce bigger power.
The non-contact power secondary circuit of native system is made up of electricity pickup and rectification, filtering, voltage stabilizing circuit.The electricity pickup coil is received the rectifier bridge that is made of Ultrafast recovery diode through pi type filter.Pi type filter is made of inductance, electric capacity and electric capacity, with the filtering high-frequency harmonic.From the direct current of rectifier bridge output, through inductance, capacitor filtering, obtain the higher direct voltage of quality through voltage stabilizing circuit again, use for load.
The present invention is by the effect of parallel resonance, can produce the required electric current in the former limit of bigger non-contact power, even can produce non-contact power primary current than the big several times of nominal current of the used IGBT of soft switching power, and the output current of soft switching power only is smaller active current.Reduce the cost of soft switching power, high-frequency isolation transformer and filter inductance effectively, improved the efficient of system.Owing to adopt soft switching power, it is sinusoidal wave that the voltage that outputs to high frequency transformer is approached, and Filter Design is simplified, even can only just can obtain good sine wave with filter inductance, reduced its cost and energy loss.
Description of drawings
Fig. 1 is travelling car non-contact power overall structure figure of the present invention
Fig. 2 is the structure diagram of soft switching power.
Fig. 3 is the noncontact former limit circuit diagram of powering.
Fig. 4 is the vectogram of the former limit of explanation non-contact power circuit diagram parallel resonance.
Fig. 5 is noncontact power supply secondary circuit figure.
Among the figure: 1 soft switching power, 2 high-frequency isolation transformer, the former limit of 3 non-contact powers compensating circuit, the former limit of 4 non-contact powers circuit cable, 5 non-contact power secondary circuits, 6 mains supplies, 7 rectifier bridges, 8 filter circuits, 9EMI circuit, 10 inverter bridge, 11IGBT, 12 Switching Power Supply series resonance inductance, 13 Switching Power Supply series resonance electric capacity, 14 filter inductances, 15 current limliting small inductors, 16 parallel resonance electric capacity, 17 additional inductors, 18 building-out capacitors, the electric current of 19 parallel resonance electric capacity, the output current of 20 Switching Power Supplies, the output voltage of 21 Switching Power Supplies, the inductive current in the cable 4 of 22 former limit circuit, 23 electricity pickup coils, 24,26 pi type filter electric capacity, 25 pi type filter inductance, 27 secondary circuit rectifier bridges, 28 secondary circuit filter inductances, 29 secondary circuit filter capacitors, 30 voltage stabilizing circuits.
Embodiment
Below be described in detail specific embodiments of the invention by technical scheme and accompanying drawing.
Present embodiment is the travelling car contactless power supply system of a 10kW, mainly is divided into soft switching power, the former limit of non-contact power circuit, non-contact power secondary circuit.
Soft switching power as shown in Figure 1, power supply adopts 380 volts of AC power 6 of three-phase, by rectifier bridge 7, compositions such as filter circuit 8, EMI circuit 9, inverter bridge 10, Switching Power Supply series resonance inductance 12, Switching Power Supply series resonance electric capacity 13 and high frequency transformer 2, its effect are to produce the required high frequency electric source of the former limit of non-contact power circuit and play buffer action.Switching Power Supply series resonance inductance 12 wherein, the resonance frequency of Switching Power Supply series resonance electric capacity 13 are designed to 20kHz, the operating frequency of soft switching power is that 30kHz is adjustable, namely adopt the operating frequency of Switching Power Supply to be higher than the working method of resonance frequency, be to belong to the continuous working method of electric current, be suitable for the needs of the former limit of non-contact power circuit.
The former limit of non-contact power circuit as shown in Figure 3, filter inductance 14 adopts metal magnetic powder cores to make magnetic core in this example, does coil winding with the Litz line.In this example, the current design of the former limit of non-contact power circuit is effective value 100A, and frequency is 30kHz.The output voltage of high frequency transformer secondary side after filter inductance 14 filtering, is the sine wave of effective value 180V.The capacity of parallel resonance electric capacity 16 is elected 3 μ F as, elects 0.5 μ H as with the current limliting small inductor 15 of parallel resonance capacitances in series.For the validity of invention is described, the length of the former limit of non-contact power circuit cable 4 has been selected two kinds: 20 meters and 40 meters, be arranged in by the track of automatic carriage operation.Length is that 20 meters actual measurement inductance is 9.7 μ H, when the operating frequency of Switching Power Supply is 29.5kHz, has reached resonance condition.In this case, the additional inductor 17 in the accompanying drawing 3, building-out capacitor 18 all need not add.Length is that 40 meters cable actual measurement inductance is 19.3 μ H, at this moment need the building-out capacitor 18 in the accompanying drawing 3 to add, so that the series inductance of building-out capacitor 18 and former limit circuit cable 4 is about 9.7 μ H, when the operating frequency of Switching Power Supply is 29.4kHz, reached resonance condition.In actual applications, the capacitance of the inductance of former limit circuit cable 4, parallel resonance electric capacity 16 and additional capacitor 18 etc. is subjected to the influence of environment etc. to have certain change, Switching Power Supply in this example can detect former limit circuit automatically and whether be operated in resonance condition, and adjusts operating frequency at any time and make circuit working in resonance condition.Also can to work in order making near resonance condition, can to select the power tube IGBT of Switching Power Supply more greatly.
The non-contact power secondary circuit as shown in Figure 5, the inductance 23 among the figure is the electricity pickup coil, is made of E type ferrite magnetic core and the winding on E type magnetic core center pillar.Because the voltage waveform on former limit is better, the induction voltage waveform of actual measurement electricity pickup coil 23 is smooth sine wave, so the output of electricity pickup coil 23 directly connects the rectifier bridge 27 that is made of Ultrafast recovery diode, be filtered into direct current through inductance 28, electric capacity 29, use for travelling car through voltage stabilizing circuit 30 output constant DC sources again.
Claims (3)
1. the contactless power supply system of the travelling car of a parallel resonance series compensation, this contactless power supply system comprises high-frequency soft switch power supply (1), the former limit of non-contact power circuit (3) and non-contact power secondary circuit (5); It is characterized in that,
The former limit of non-contact power circuit is antiresonant circuit, and soft switching power is added to this antiresonant circuit as power supply by a high-frequency inductor filter;
Antiresonant circuit comprises parallel resonance electric capacity (16), additional inductor (17)/building-out capacitor (18), the former limit of non-contact power circuit cable (4) series connection;
When the former limit of non-contact power circuit cable was long, its inductance was bigger, and the building-out capacitor that then needs to connect is at least offset the induction reactance of a part of circuit cable, satisfies the parallel resonance condition;
The non-contact power secondary circuit is made up of electricity pickup coil, rectifier bridge, filter circuit, voltage stabilizing circuit.
2. the contactless power supply system of travelling car according to claim 1 is characterized in that, described soft switching power operating frequency range is 10kHz-60kHz.
3. the contactless power supply system of travelling car according to claim 1 and 2 is characterized in that, the parallel resonance capacitances in series current limliting small inductor of described antiresonant circuit.
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| CN201310187371.0A CN103259345B (en) | 2013-05-18 | 2013-05-18 | A kind of contactless power supply system of travelling car of parallel resonance series compensation |
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| CN201310187371.0A CN103259345B (en) | 2013-05-18 | 2013-05-18 | A kind of contactless power supply system of travelling car of parallel resonance series compensation |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414259A (en) * | 2013-08-23 | 2013-11-27 | 广西电网公司电力科学研究院 | Current-mode IPT system efficiency optimizing control circuit and method |
| CN103633747A (en) * | 2013-11-12 | 2014-03-12 | 天津工业大学 | Electromagnetic resonance wireless power supply system for subway |
| CN104578439A (en) * | 2013-10-21 | 2015-04-29 | 台达电子企业管理（上海）有限公司 | Device for wireless charging circuit |
| CN106411105A (en) * | 2016-06-17 | 2017-02-15 | 安徽长远绿色能源有限公司 | Soft-switching circuit topology based on charging and discharging of capacitor |
| CN106849369A (en) * | 2017-04-05 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | The energy taking device and method of the built on stilts lightning protection ground wire of the transmission line of electricity based on CT power takings |
| US9923584B2 (en) | 2015-09-03 | 2018-03-20 | Qualcomm Incorporated | Rectifiers for wireless power transfer with impedance inverting filters for reduced electromagnetic interference |
| CN109802498A (en) * | 2019-02-22 | 2019-05-24 | 上海鹄恩信息科技有限公司 | A kind of power supply system based on radio frequency electromagnetic collection of energy, method and device |
| US20190237248A1 (en) * | 2016-10-07 | 2019-08-01 | Bayerische Motoren Werke Aktiengesellschaft | Coil Unit for Inductively Charging a Vehicle |
| CN112994487A (en) * | 2021-02-07 | 2021-06-18 | 重庆中车长客轨道车辆有限公司 | Direct current power supply device |
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| JPH11178248A (en) * | 1997-12-05 | 1999-07-02 | Shinko Electric Co Ltd | Power circuit for non-contact power supply |
| CN102157973A (en) * | 2011-04-08 | 2011-08-17 | 东南大学 | High-power induction charging converter of electric vehicle and control method thereof |
| CN102611206A (en) * | 2012-03-13 | 2012-07-25 | 崔玉龙 | Kilowatt-level wireless electric energy transmitting device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414259A (en) * | 2013-08-23 | 2013-11-27 | 广西电网公司电力科学研究院 | Current-mode IPT system efficiency optimizing control circuit and method |
| CN103414259B (en) * | 2013-08-23 | 2015-04-22 | 广西电网公司电力科学研究院 | Control method for current-mode IPT system efficiency optimizing control circuit |
| CN104578439A (en) * | 2013-10-21 | 2015-04-29 | 台达电子企业管理（上海）有限公司 | Device for wireless charging circuit |
| CN104578439B (en) * | 2013-10-21 | 2018-10-09 | 台达电子企业管理（上海）有限公司 | Device for wireless charging link |
| US9627917B2 (en) | 2013-10-21 | 2017-04-18 | Delta Electronics (Shanghai) Co., Ltd | Device for wireless charging circuit |
| CN103633747A (en) * | 2013-11-12 | 2014-03-12 | 天津工业大学 | Electromagnetic resonance wireless power supply system for subway |
| CN103633747B (en) * | 2013-11-12 | 2017-02-15 | 天津工业大学 | Electromagnetic resonance wireless power supply system for subway |
| US9923584B2 (en) | 2015-09-03 | 2018-03-20 | Qualcomm Incorporated | Rectifiers for wireless power transfer with impedance inverting filters for reduced electromagnetic interference |
| CN106411105A (en) * | 2016-06-17 | 2017-02-15 | 安徽长远绿色能源有限公司 | Soft-switching circuit topology based on charging and discharging of capacitor |
| CN106411105B (en) * | 2016-06-17 | 2019-03-15 | 安徽长远绿色能源有限公司 | A kind of soft switch circuit topology based on capacitor charge and discharge |
| US20190237248A1 (en) * | 2016-10-07 | 2019-08-01 | Bayerische Motoren Werke Aktiengesellschaft | Coil Unit for Inductively Charging a Vehicle |
| US11908616B2 (en) * | 2016-10-07 | 2024-02-20 | Bayerische Motoren Werke Aktiengesellschaft | Coil unit for inductively charging a vehicle |
| CN106849369A (en) * | 2017-04-05 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | The energy taking device and method of the built on stilts lightning protection ground wire of the transmission line of electricity based on CT power takings |
| CN106849369B (en) * | 2017-04-05 | 2024-05-03 | 贵州电网有限责任公司电力科学研究院 | Energy taking device and method for overhead lightning protection ground wire of power transmission line based on CT electricity taking |
| CN109802498A (en) * | 2019-02-22 | 2019-05-24 | 上海鹄恩信息科技有限公司 | A kind of power supply system based on radio frequency electromagnetic collection of energy, method and device |
| CN112994487A (en) * | 2021-02-07 | 2021-06-18 | 重庆中车长客轨道车辆有限公司 | Direct current power supply device |
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