CN101860070A - Uninterruptible power supply for high-frequency soft switch of locomotive air conditioner and realization method thereof - Google Patents
Uninterruptible power supply for high-frequency soft switch of locomotive air conditioner and realization method thereof Download PDFInfo
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- CN101860070A CN101860070A CN 201010157309 CN201010157309A CN101860070A CN 101860070 A CN101860070 A CN 101860070A CN 201010157309 CN201010157309 CN 201010157309 CN 201010157309 A CN201010157309 A CN 201010157309A CN 101860070 A CN101860070 A CN 101860070A
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Abstract
The invention relates to an uninterruptible power supply for a high-frequency soft switch of a locomotive air conditioner, which mainly comprises an access port of a contact network and a three-phase inverter. The uninterruptible power supply is characterized in that after passing a multiple filter network, an input voltage introduced by the access port of the contact network is converted into an output voltage by passing a primary rectification filter circuit, a high-frequency inverter, a high-frequency boost transformer, a secondary rectification filter circuit, a PWM (Pulse-Width Modulation) chopper circuit and the three-phase inverter in sequence; and a battery circuit is connected in parallel between the PWM (Pulse-Width Modulation) chopper circuit and the three-phase inverter. The invention also discloses a realization method of the uninterruptible power supply for a high-frequency soft switch of a locomotive air conditioner. The uninterruptible power supply can inhibit the peak pulse voltage of the contact network, and the PWM (Pulse-Width Modulation) chopper circuit adopts a single-phase bridge inverter booster circuit and is controlled by an analog circuit method, and thus, the uninterruptible power supply has the characteristics of good dynamic quality, high anti-jamming capability, and the like.
Description
Technical field
The present invention relates to a kind of locomotive air conditioner power supply, specifically be meant a kind of uninterruptible power supply for high-frequency soft switch of locomotive air conditioner and its implementation.
Background technology
Along with the development of railway construction in China, the quantity of national locomotive head is near 10,000.Since in the locomotive head equipment such as large power supply and actuator thereof cause the locomotive vehicle interior temperature up to 50 ℃～70 ℃, if under such temperature, there is not the locomotive air conditioner device, then will influence equipment operation safety and driver operations staff's physical and mental health greatly, very easily cause operate miss and accident.
At present, China's locomotive air conditioner group has more than 20 production unit, but its locomotive air conditioner group failure-frequency of producing is high, and its maintenance cost is also very expensive, thereby becomes the general existing difficult problem of railway interests in recent years, is not well solved so far.Through long research and analysis, it is not air-conditioning unit itself that people just find the true cause that causes the air-conditioning unit frequently to go wrong, and the fault more than 95% is caused by the electronic power conversion power supply of giving the power supply of air-conditioning unit.Because locomotive all obtains electric energy by the traction power source contact line, and there is following several drawback in the contact line electric energy: 1, output voltage waveforms seriously distorts, and harmonic component is greater than 15%; 2, voltage output amplitude change can reach ± 40%; 3, moment also can produce aciculiform peak interference voltage of 6～10 times etc.Therefore, traditional electronic power conversion air-conditioning power supply is difficult to resist the influence of contact line difference power supply, thereby causes the equipment fault of air-conditioning unit to take place frequently.
Summary of the invention
The objective of the invention is to overcome the influence that present electronic power conversion power supply is subjected to abominable quality of contact line power quality etc. easily, make the defective that the equipment fault of air-conditioning unit takes place frequently, a kind of influence that can effectively reduce aciculiform peak interference voltage etc. is provided, thereby significantly reduces the frequent uninterruptible power supply for high-frequency soft switch of locomotive air conditioner that produces of air-conditioning unit equipment fault.
Another object of the present invention provides the implementation method of this uninterruptible power supply for high-frequency soft switch of locomotive air conditioner.
Purpose of the present invention is achieved through the following technical solutions: uninterruptible power supply for high-frequency soft switch of locomotive air conditioner, the main input voltage of being introduced by the contact line incoming end is through forming output voltage behind process one-level current rectifying and wave filtering circuit, high-frequency inverter circuit, high-frequency step-up transformer, secondary current rectifying and wave filtering circuit, PWM chopper circuit and the three-phase inverting circuit successively behind the multiple filter network, simultaneously, between PWM chopper circuit and three-phase inverting circuit, also be parallel with battery circuit and form uninterrupted power supply the load of air-conditioning unit.
In order better to realize the present invention, the bridge-type high-frequency switch circuit (by Analog Electronics Technique control) of described high-frequency inverter circuit for being formed by four IGBT pipes; Described one-level current rectifying and wave filtering circuit is that common power frequency bridge rectifier filter circuit, secondary current rectifying and wave filtering circuit are the high frequency bridge rectifier filter circuit; The output inverter circuit (by DSP single chip microcomputer hardware circuit and real-time control software control thereof) of described three-phase inverting circuit for being constituted by Intelligent Power Module IPM; Described chopper circuit is to be made up of IGBT pipe, sustained diode and inductance L; Described multiple filter network is for to be in series successively by more than one LC multiple-stage filtering loop.
The implementation method of uninterruptible power supply for high-frequency soft switch of locomotive air conditioner mainly may further comprise the steps:
(a) the high pressure 27.5KV single phase alternating current power supply of contact line is transformed into the interchange main circuit power of 220V or 396V by the contact line incoming end;
(b) exchange main circuit power and after the multiple filter network carries out peak clipping, carry out bridge rectifier filtering through the one-level current rectifying and wave filtering circuit again, obtain a direct voltage with the contact line power network fluctuation;
(c) this direct voltage obtains high-frequency ac modulating wave voltage (adopt analog circuit and control the closed loop feedback circuit automatically) behind high-frequency inverter circuit and high-frequency step-up transformer;
(d) this high-frequency ac modulating wave voltage obtains the intermediate dc voltage of transformation of stable 540V behind secondary current rectifying and wave filtering circuit and PWM chopper circuit;
(e) this intermediate dc voltage of transformation generates the ac output voltage of stable 380V behind three-phase inverting circuit.
Simultaneously, in execution in step (e), also battery circuit is charged by the intermediate dc voltage of transformation.
Cut off the power supply by the phase-splitting section time for fear of locomotive, the output dc voltage of battery circuit of the present invention and intermediate dc voltage of transformation merge simultaneously to three-phase inverting circuit power supply formation uninterrupted power supply by electronics.
The present invention compared with prior art has following advantage and beneficial effect:
(1) the present invention had carried out the peak clipping processing in advance before contact line voltage is introduced the one-level current rectifying and wave filtering circuit, thereby had effectively suppressed the interference of contact line peak impulse voltage.
(2) traditional copped wave booster circuit is the boost control circuit of the single tube IGBT pipe of single science of computers control technology, its principle of boosting is to adopt the inductance accumulation of energy, because inductance is a big inertial element, the dynamically quick followability of control of adding Control Technique of Microcomputer is poor with respect to the dynamic quality of analog control technique, be very easy to step-out (particularly in the face of contact line by the low-voltage kick to high voltage time) during in the face of the big amplitude change of contact line voltage instantaneous and produce overvoltage, thereby puncture elements such as this IGBT pipe.The analog control circuit that the present invention then adopts high-frequency inverter circuit and high-frequency step-up transformer to form, therefore not only the response speed of its control is very fast, and its dynamic quality is very good, thereby has increased the security performance of output voltage.
(3) high-frequency inverter circuit of the present invention can also adopt soft switch technique (traditional single tube is impossible adopt this technology), to suppressing the du/dt that the IGBT switching tube is born, di/dt and to the switching loss of IGBT pipe caused heating has tangible effect, improved the property safe and reliable to operation of IGBT pipe.
(4) the present invention is provided with independently batteries and control circuit thereof, traditional air-conditioning power supply then is the storage battery power supply that utilizes locomotive itself, therefore avoid and prevented locomotive setting itself storage battery damage and cause defective such as locomotive control power imbalance, improved safe class.
(5) power supply of the present invention still be the high frequency booster circuit of traditional power supply all be the core of power supply, because in the face of abominable contact line power supply quality, the boost control circuit of power supply of the present invention has partly adopted the analog control circuit technology, therefore its antijamming capability is more much better than than conventional power source, thereby has further improved the stable and reliability of operation.
Description of drawings
Fig. 1 is the overall flow schematic diagram of existing locomotive air conditioner unit Flow varying power supply.
Fig. 2 is the overall flow schematic diagram of locomotive air conditioner unit Flow varying power supply of the present invention.
Fig. 3 is a particular circuit configurations schematic diagram shown in Figure 2.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the Flow varying power supply of existing locomotive air conditioner unit all is the single phase alternating current power supplies that earlier high voltage of contact line power supply 27.5KV fallen into 220V or 296V after through step-down transformer 27.5KV/220VAC or 27.5KV/396VAC, does not control the direct voltage that generates behind the rectifying and wave-filtering with voltage ripple of power network then.
This direct voltage becomes stable 540V direct voltage after managing boost chopper by micro-processor controlled IGBT, and this direct voltage removes to control three-phase air-conditioning unit in the three phase sine pulse-width modulation wave voltage output that becomes frequency, voltage variable by micro-processor controlled IGBT three-phase inverter then.
After when crossing the phase-splitting section, locomotive storage batteries group 110V being boosted, become the variable three-phase alternating voltage of voltage to frequency as the usefulness that drives air conditioner by three-phase inverter by boost chopper.Be the output current of restriction batteries, when crossing the phase-splitting section, the output frequency of three-phase inverter is reduced to 32HZ, and merit falls in air conditioner to be used.Can not fall because of being provided with the battery feed output frequency of providing for oneself yet, but the phase splitter time stagnate fault greater than can be considered locomotive more than the 15S, battery feed is with automatic disconnection.
Shown in Fig. 2,3, for the aciculiform peak interference voltage that suppresses to be produced when locomotive is crossed the phase-splitting section, the present invention had carried out multiple peak clipping by the multiple filter network in advance and has handled carried out the alternating voltage input one-level current rectifying and wave filtering circuit of step-down processing resulting 220V in back or 396V by the contact line voltage with 27.5KV before, and then the alternating voltage after will carrying out peak clipping and handling is input to the one-level current rectifying and wave filtering circuit and carries out bridge rectifier, filtering, obtains a direct voltage with contact line (external power grid) fluctuation.
Subsequently, this direct voltage obtains a high-frequency ac modulating wave voltage after high-frequency inverter circuit and high-frequency step-up transformer boost.This high-frequency ac modulating wave voltage obtains a stable 540VDC intermediate dc voltage of transformation again behind secondary current rectifying and wave filtering circuit and PWM chopper circuit, with the three-phase inverting circuit of supply, thereby obtain stable 380VAC output voltage by IPM (Intelligent Power Module) formation.The ac output voltage of this 380V then can directly be supplied with the locomotive air conditioner group and use.
When 540VDC intermediate dc voltage of transformation being supplied with three-phase inverting circuit, battery circuit is charged by the PWM chopper circuit.That is, by the reasonable break-make of the IGBT pipe in the control PWM chopper circuit, the batteries in the accumulators circuit is carried out constant current constant voltage and is rationally charged, to avoid overcharge of a battery.Accordingly, batteries by its discharging current of rational control and discharge time, is avoided battery overdischarge again by charge/discharge control circuit.
Battery discharging circuit output dc voltage and 540VDC middle dc voltage merge simultaneously by electronics powers to three-phase inverting circuit, and storage battery can switch to the purpose of storage battery to the three-phase inverting circuit power supply the continual zero-time when contact line has a power failure thereby reach.
The structure of this multiple filter network as shown in Figure 3, promptly this multiple filter network is in series successively by more than one LC filter circuit, the one end is the input of this multiple filter network, the other end is its output.The one-level current rectifying and wave filtering circuit is for to form common power frequency bridge rectifier by four diode D, two electrochemical capacitor E, two capacitor C, two resistance R and an inductance L, and its input is connected with the output of multiple filter network.27.5KV the alternating voltage of contact line voltage resulting 220V or 396V after step-down is handled as main circuit power of the present invention, and link to each other with the input of multiple filter network.
High-frequency inverter circuit constitutes high frequency single-phase bridge switch analog circuit by four IGBT pipes, and its input is connected with the output of one-level current rectifying and wave filtering circuit, and its output then is connected with the former limit of high-frequency step-up transformer.Simultaneously, each the IGBT pipe in this high-frequency inverter circuit all also is parallel with a sustained diode respectively.
The secondary current rectifying and wave filtering circuit is by four diode D, two electrochemical capacitor E, two capacitor C, two resistance R and the high frequency bridge rectifier filter circuit that inductance L is formed, the secondary of high-frequency step-up transformer then is connected with the input of this secondary current rectifying and wave filtering circuit, and the output of secondary current rectifying and wave filtering circuit then is connected with the input of PWM chopper circuit.
Described PWM chopper circuit is then by an IGBT pipe, two diode D, an inductance L, two electrochemical capacitor E and two single-phase bridge inversion boosting analog circuits that capacitor C is formed.Wherein, diode D and IGBT pipe are in parallel, as its fly-wheel diode.After two electrochemical capacitor E and two capacitor C were formed a bridge architecture, the one end was connected with the IGBT pipe through inductance L, simultaneously, another diode D then be connected the tie point of inductance L and IGBT pipe and the bridge architecture formed by electric capacity after the other end.
The output of this PWM chopper circuit is connected with three-phase inverting circuit and battery circuit respectively, wherein, three-phase inverting circuit is formed bridge circuit structure by six Intelligent Power Module IPM, its input is connected with the output of PWM chopper circuit, and output is then directly exported the three-phase alternating voltage of 380V.Wherein, this Intelligent Power Module IPM is by DSP single chip microcomputer hardware circuit and real-time control software control thereof.
Battery circuit of the present invention belongs to independently system, is direct power taking source from the PWM chopper circuit, rather than from the electric power system of locomotive the power taking source.This battery circuit is made up of battery charging circuit and battery discharging circuit two parts, wherein, battery charging circuit is managed, is connected in parallel on the sustained diode at these IGBT pipe two ends by an IGBT, the bridge architecture, big inductance L and the diode D that are made up of two electrochemical capacitor E and two capacitor C form, and the battery discharging circuit then is made up of solid state relay and diode D.
As mentioned above, just can well realize the present invention.
Claims (9)
1. uninterruptible power supply for high-frequency soft switch of locomotive air conditioner, mainly form by contact line incoming end and three-phase inverting circuit, it is characterized in that: the input voltage that this contact line incoming end is introduced is through forming output voltage successively with behind one-level current rectifying and wave filtering circuit, high-frequency inverter circuit, high-frequency step-up transformer, secondary current rectifying and wave filtering circuit, PWM chopper circuit and the three-phase inverting circuit behind the multiple filter network, simultaneously, between PWM chopper circuit and three-phase inverting circuit, also be parallel with battery circuit.
2. uninterruptible power supply for high-frequency soft switch of locomotive air conditioner according to claim 1 is characterized in that: the single-phase bridge HF switch analog circuit of described high-frequency inverter circuit for being made up of four IGBT pipes.
3. uninterruptible power supply for high-frequency soft switch of locomotive air conditioner according to claim 1 is characterized in that: described one-level current rectifying and wave filtering circuit is common power frequency bridge rectifier filter circuit, and described secondary current rectifying and wave filtering circuit is the high frequency bridge rectifier filter circuit.
4. according to each described uninterruptible power supply for high-frequency soft switch of locomotive air conditioner of claim 1～3, it is characterized in that: the output inverter circuit of described three-phase inverting circuit for being constituted by Intelligent Power Module IPM.
5. uninterruptible power supply for high-frequency soft switch of locomotive air conditioner according to claim 4 is characterized in that: the single-phase bridge inversion boosting analog circuit of described PWM chopper circuit for being made up of IGBT pipe, sustained diode and inductance L.
6. uninterruptible power supply for high-frequency soft switch of locomotive air conditioner according to claim 5 is characterized in that: described multiple filter network is for to be in series successively by more than one LC multiple-stage filtering loop.
7. the implementation method of uninterruptible power supply for high-frequency soft switch of locomotive air conditioner mainly may further comprise the steps:
(a) the high pressure 27.5KV single phase alternating current power supply of contact line is converted to the interchange main circuit power of 220V or 396V by the contact line incoming end;
(b) exchange main circuit power and after the multiple filter network carries out peak clipping, carry out bridge rectifier filtering through the one-level current rectifying and wave filtering circuit again, obtain a direct voltage with the contact line power network fluctuation;
(c) this direct voltage obtains high-frequency ac modulating wave voltage behind high-frequency inverter circuit and high-frequency step-up transformer;
(d) this high-frequency ac modulating wave voltage obtains the intermediate dc voltage of transformation of stable 540V behind secondary current rectifying and wave filtering circuit and PWM chopper circuit;
(e) this intermediate dc voltage of transformation generates the ac output voltage of stable 380V behind three-phase inverting circuit.
8. the implementation method of uninterruptible power supply for high-frequency soft switch of locomotive air conditioner according to claim 7 is characterized in that: also by the intermediate dc voltage of transformation battery circuit is charged in execution in step (e).
9. the implementation method of uninterruptible power supply for high-frequency soft switch of locomotive air conditioner according to claim 8 is characterized in that: the output dc voltage of battery circuit and intermediate dc voltage of transformation merge by electronics powers to three-phase inverting circuit simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101573093A CN101860070B (en) | 2010-04-26 | 2010-04-26 | Uninterruptible power supply for high-frequency soft switch of locomotive air conditioner and realization method thereof |
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| CN2010101573093A CN101860070B (en) | 2010-04-26 | 2010-04-26 | Uninterruptible power supply for high-frequency soft switch of locomotive air conditioner and realization method thereof |
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| CN101860070B CN101860070B (en) | 2012-08-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118050A (en) * | 2011-02-28 | 2011-07-06 | 中国船舶重工集团公司第七一二研究所 | Storage battery charge-discharge device |
| CN103219795A (en) * | 2013-05-10 | 2013-07-24 | 温州大学 | High-voltage and high-power uninterruptible power supply device |
| CN106274507A (en) * | 2016-08-29 | 2017-01-04 | 中车大连机车车辆有限公司 | Electric locomotive current transformer medium voltage Automatic adjustment method |
| CN106602887A (en) * | 2015-10-14 | 2017-04-26 | 福建省湄洲湾职业技术学校 | Single-phase alternating-current inverted three-phase alternating current inverter |
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| JPH1014252A (en) * | 1996-06-19 | 1998-01-16 | Daikin Ind Ltd | Power converter |
| CN1889322A (en) * | 2006-07-25 | 2007-01-03 | 株洲时代广创变流技术有限公司 | Locomotive air conditioner electric power controlling method and apparatus |
| CN101249801A (en) * | 2008-03-31 | 2008-08-27 | 北京交通大学 | Automobile auxiliary current transformer |
| CN101697458A (en) * | 2009-10-26 | 2010-04-21 | 株洲南车时代电气股份有限公司 | Three-phase auxiliary inverter |
| CN201682316U (en) * | 2010-04-26 | 2010-12-22 | 成都方脉科技有限公司 | High-frequency soft switching UPS of locomotive air conditioner |
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2010
- 2010-04-26 CN CN2010101573093A patent/CN101860070B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1014252A (en) * | 1996-06-19 | 1998-01-16 | Daikin Ind Ltd | Power converter |
| CN1889322A (en) * | 2006-07-25 | 2007-01-03 | 株洲时代广创变流技术有限公司 | Locomotive air conditioner electric power controlling method and apparatus |
| CN101249801A (en) * | 2008-03-31 | 2008-08-27 | 北京交通大学 | Automobile auxiliary current transformer |
| CN101697458A (en) * | 2009-10-26 | 2010-04-21 | 株洲南车时代电气股份有限公司 | Three-phase auxiliary inverter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118050A (en) * | 2011-02-28 | 2011-07-06 | 中国船舶重工集团公司第七一二研究所 | Storage battery charge-discharge device |
| CN103219795A (en) * | 2013-05-10 | 2013-07-24 | 温州大学 | High-voltage and high-power uninterruptible power supply device |
| CN106602887A (en) * | 2015-10-14 | 2017-04-26 | 福建省湄洲湾职业技术学校 | Single-phase alternating-current inverted three-phase alternating current inverter |
| CN106274507A (en) * | 2016-08-29 | 2017-01-04 | 中车大连机车车辆有限公司 | Electric locomotive current transformer medium voltage Automatic adjustment method |
| CN106274507B (en) * | 2016-08-29 | 2018-09-25 | 中车大连机车车辆有限公司 | Electric locomotive current transformer medium voltage Automatic adjustment method |
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| CN101860070B (en) | 2012-08-29 |
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