CN101237215B - Car air-conditioner frequency conversion control system and its method - Google Patents
Car air-conditioner frequency conversion control system and its method Download PDFInfo
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- CN101237215B CN101237215B CN2007100033306A CN200710003330A CN101237215B CN 101237215 B CN101237215 B CN 101237215B CN 2007100033306 A CN2007100033306 A CN 2007100033306A CN 200710003330 A CN200710003330 A CN 200710003330A CN 101237215 B CN101237215 B CN 101237215B
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Abstract
The invention provides a vehicle air conditioner frequency conversion control system and a method thereof. A vehicle DC power supply is led directly; a stabilized voltage supply of the air conditioner is used to directly output a DC to a converter plant; each set of frequency transformators of the converter plant provides a threephase AC to a system unit of the air conditioner to drive each system unit of the conditioner to run in a mode of frequency conversion. The invention realizes the simplification of the conversion process of the vehicle air conditioner using the power supply, effectively reduces the energy consumption, raises the utilization efficiency of the power supply, greatly reduces the capacity of the power supply transfer device on the vehicle and reduces the volume of the air conditioner control circuit. The stabilized voltage supply of a voltage control module is directly led to the vehicle DC power supply; the DC power output terminal of the stabilized voltage supply is directly connected with the converter plant which is connected with an MCU by an asynchronous communication bus. The converter plant at least comprises two sets of frequency transformators; the power supply input terminals between frequency transformators are connected in parallel and are connected with the MCU by a common communication bus.
Description
Technical field
The present invention relates to a kind of frequency-changing control system and method thereof, on rail vehicle, directly introduce direct current net voltage source specifically to air-conditioning power supply and employing frequency-changeable compressor.
Background technology
On various rail vehicles, adopt constant speed single-cooling type air-conditioning system at present at large; The power supply that uses is AC380V; Its main power source power supply flow process is shown in the accompanying drawing 1 of back; First is vehicle power supply conversion equipment (subordinate inverter), its input be that net is pressed DC750V, correspondingly have the situation of the 250V that fluctuates up and down.Through the chopper step-down, produce AC380V voltage through inverter again.
Second portion is the controller of air conditioner, and existing air conditioner for vehicles generally adopts independently control cubicle, and the controller of air conditioner is placed in the control cubicle.To supply power AC380V process inverter to the third part system unit through controller, three-phase alternating current will be provided like compressor, ventilation blower and condensation fan etc.Wherein, inverter be a direct current carrying out that frequency conversion when conversion also need the AC380V power source conversion, detects the three-phase alternating current of system power regulation voltage duty ratio with the output corresponding frequencies according to main control MCU again.
Existing vehicle air conditioning like above scheme; The employed AC380V power supply of air-conditioning unit is via the rectification of net straightening stream 750V power supply elder generation, inversion again; Import through air-conditioner controller frequency conversion conversion; Not only in multi-group power conversion, cause bigger energy loss, efficient low, and the related circuit complex structure of vehicle power supply conversion equipment (subordinate inverter) and air-conditioner controller, take more configuration space, be unfavorable for the miniaturization of vehicle and air-conditioning unit, integrated design.
And; Existing vehicle air conditioning depends on the certain input power supply of frequency that vehicle power supply provides, thus mostly adopt be still constant speed compressor, this just is difficult to adapt to the climatic environment that multiple rail vehicle moves; The adjustment of vehicle air conditioning is unreasonable, is difficult to realize accurate temperature adjustment.
Summary of the invention
Car air-conditioner frequency conversion control system of the present invention and method thereof; Be to address the above problem and the vehicle DC power supply is directly introduced; Directly export a direct current through the stabilized voltage power supply of air-conditioning and give converter plant; Many groups frequency converter by converter plant provides three-phase alternating current to the system unit of air-conditioning separately, moves under variable mode to drive each system unit of air-conditioning.
The objective of the invention is to; Simplify the flow path switch that vehicle air conditioning uses power supply, reduce energy loss effectively, improve the power supply service efficiency, owing to do not use the subordinate inverter on the vehicle; Greatly reduce the use capacity of vehicle subordinate inverter, and improved its reliability.Reduce the structure of ac control circuit simultaneously.
Another goal of the invention is, realizes the VFC of vehicle air conditioning, can adopt frequency-changeable compressor to adapt to multiple climatic environment through changing supply frequency, reaches distributing rationally of air-conditioner temperature adjusting.
For realizing the foregoing invention purpose, described car air-conditioner frequency conversion control system mainly has following structure:
Include main control module and energy supply control module, the main control MCU of said main control module, an one of which PORT COM is connected with central controller, vehicle communication bus through the RS485 circuit, and its another PORT COM is connected with line control machine through the asynchronous communication bus.
Improvements of the present invention are that the stabilized voltage power supply of described energy supply control module is directly introduced the vehicle DC power supply, and the dc power output end of stabilized voltage power supply directly connects converter plant, and converter plant is through being connected with main control MCU through the asynchronous communication bus.
Converter plant comprises two groups of frequency converters at least, and frequency converter power input each other is connected in parallel, and the output of frequency converter connects the system unit of vehicle air conditioning separately.
Like above-mentioned scheme characteristic; The employed driving power of vehicle air conditioning is the vehicle net voltage source of directly introducing; Be DC750V; Carry out voltage stabilizing, rectification and to the converter plant output DC through energy supply control module, then converter plant can come the regulation voltage duty ratio according to the control of main control module a wider frequency, to export the three-phase alternating current of different magnitudes of voltage to the vehicle air conditioner parts.
Further improvement project is, described stabilized voltage power supply comprises two groups of pressurizers at least, and the input and output side between the pressurizer is connected in parallel separately.
Because the net piezoelectricity of vehicle input presses fluctuation bigger; Need voltage stabilizing in advance after the power supply input; Stabilized voltage power supply of the present invention adopts " N+1 " parallel redundancy structure, organizes independently Voltage stabilizing module more, and its input and output are connected in parallel separately; Through the inner automatic current equalizing technology of each modular unit, make the power of output voltage can mutual superposition.Even a certain pressurizer breaks down and from parallel system, withdraws from, but also operate as normal of all the other modules.
Use above-mentioned control system scheme, vehicle air conditioning method for controlling frequency conversion according to the invention, its main flow process is:
The vehicle DC power supply directly is introduced into the energy supply control module of air-conditioning frequency-changing control system; Export a direct current through the voltage stabilizing of stabilized voltage power supply and give converter plant; Many groups frequency converter by converter plant provides three-phase alternating current to the system unit of air-conditioning separately, moves under variable mode to drive each system unit of air-conditioning.
Wherein, said stabilized voltage power supply has " N+1 " parallel redundancy structure, and the input and output side of organizing pressurizer is connected in parallel separately.
Described vehicle air conditioning has two cover independent compressed machine cooling system devices, and the frequency-changeable compressor of every suit refrigerating system device provides three-phase alternating current by a frequency converter, under variable mode, to move independently.
Content to sum up, the advantage of said car air-conditioner frequency conversion control system and method thereof is:
1, do not rely on power supply change-over device (subordinate inverter) on the vehicle, simplified the power source conversion flow process, thereby reduce energy loss effectively, improve the power supply service efficiency.
2, realize the VFC of vehicle air conditioning, can adopt frequency-changeable compressor to adapt to multiple climatic environment, reach distributing rationally of air-conditioner temperature adjusting through changing supply frequency.
3, adopt the two cover compressor cooling circulatory systems and organize the redundant parallel configuration of pressurizer more, can more effectively guarantee the stability of vehicle air conditioning operation.
Description of drawings
Fig. 1 is the power supply control sketch map of existing vehicle air conditioning;
Fig. 2 is the module map of car air-conditioner frequency conversion control system according to the invention;
Fig. 3 is the structural representation of said stabilized voltage power supply;
Fig. 4 is the structural representation of said converter plant.
Embodiment
Main control module 20 comprises main control MCU 3, central controller 4, and line control machine 5, sensor circuit 6 is from initialization circuit 7, two cover cross valve controls 12, two cover electronic expansion valve controls 13, two cover heat tapes 14, air returning valve 15 and new air-valve 16.
The main control MCU 3 of said main control module 20, an one of which PORT COM is connected with central controller 4, vehicle communication bus through the RS485 circuit, and its another PORT COM is through asynchronous communication bus and line control machine 5, and converter plant 2 is connected.
Energy supply control module 30 comprises stabilized voltage power supply 1, converter plant 2, A compressor 8, B compressor 9, outdoor fan 10 and indoor fan 11.
Described energy supply control module 30, its stabilized voltage power supply 1 are directly introduced the vehicle DC power supply, and the dc power output end of stabilized voltage power supply 1 directly connects converter plant 2, and converter plant 2 is connected with main control MCU 3 through the asynchronous communication bus.
Described stabilized voltage power supply 1 comprises two groups of pressurizers at least, and the input and output side between the pressurizer is connected in parallel separately.
The pressurizer of said stabilized voltage power supply 1, its leading-in end of introducing the vehicle DC power supply are connected after safeties FU1, the filter LB1 successively, and IGBT carries out the HF switch conversion through controller control; And through the output of transformer TR1 isolation coupling; Two outputs of transformer TR1 are respectively through linking together behind diode D1, the D2; And the input of access filter inductance L1; Capacitor C 3 is connected in parallel on the centre tap place of output and the transformer TR1 of filter inductance L1, promptly is connected in parallel on the output two ends of stabilized voltage power supply 1.The output of stabilized voltage power supply 1 connects the power input of converter plant 2.
Operation principle is direct current net voltage source DC750V process insurance FU1, behind the filter LB1, carries out the HF switch conversion through controller control insulated gate bipolar transistor IGBT, makes transformer output HF switch waveform.Through diode D1 and D2 rectification, after inductance L 1 and capacitor C 3 filtering, export galvanic current then.
Controller is through detecting output voltage, and through calculating, and with the conducting of decision IGBT with end, comes stable defeated
Go out.After the power supply output negative terminal of pressurizer passes through serial connection one over-current detection resistance R 3, be connected the input negative terminal of converter plant 2, over-current detection resistance R 3 is connected between the over-current detection end of controller simultaneously.Controller operates in the normal current margin to guarantee power supply through the detection of overcurrent resistance R 3, prevents overcurrent.Detected fault like controller, then exported fault message and give master control borad, master control borad control air-conditioning turns round with low frequency.
The frequency converter of said converter plant 2; Include 6 igbts (IGBT), form 6 brachium pontis of inversion, only need the periphery that driving power and drive signal are provided; Just can be easily according to drive signal; The three-phase alternating current that output frequency is adjustable comes Driven Compressor 8 and 9, and indoor fan 11, outdoor fan 10.Each pin definitions of its module and function are:
Pin Vup1, Vvp1 and Vwp1 are respectively last three brachium pontis driving power positive terminals;
Pin Vupc, Vvpc and Vwpc are respectively last three brachium pontis driving power negative pole ends;
Pin Vn1 is following three brachium pontis driving power positive terminals;
Pin Vnc is following three brachium pontis driving power negative pole ends;
Pin Up, Vp and Wp are the driving signal input of last three brachium pontis;
Pin Un, Vn and Wn are the driving signal input of following three brachium pontis;
Pin P is the input positive terminal of the whole DC power supply of frequency converter;
Pin N is the input negative pole end of the whole DC power supply of frequency converter;
Pin U, V and W are respectively the outputs of the whole three-phase alternating current of frequency converter;
Pin Ufo, Vfo and Wfo are respectively the failure output terminals of last three brachium pontis;
Pin Fo is the fault common output end of following three brachium pontis.
Frequency converter adopts IPM module PM25CLA120 chip (25A/1200V), and its peripheral components is less, can cooperate Single-chip Controlling.
Described vehicle air conditioning method for controlling frequency conversion; The vehicle DC power supply directly is introduced into the energy supply control module 30 of air-conditioning frequency-changing control system; Export a direct current through the voltage stabilizing of stabilized voltage power supply 1 and give converter plant 2; Many groups frequency converter by converter plant 2 provides three-phase alternating current to the system unit of air-conditioning separately, moves under variable mode to drive each system unit of air-conditioning.
Said stabilized voltage power supply 1 has " N+1 " parallel redundancy structure, and the input and output side of organizing pressurizer is connected in parallel separately.
Owing to the net piezoelectricity on the vehicle presses fluctuation bigger, after the power supply input, to carry out voltage stabilizing earlier and handle, the net straightening stream power supply that fluctuates is stabilized in about DC540V.
Stabilized voltage power supply adopts modularized design; And take " N+1 " parallel redundancy design form; Be divided into two or more independently pressurizers, input and output are connected in parallel separately, through the inner automatic current equalizing technology of each modular unit; Both ensured working alone of each module, output can be superposeed by power.
If some pressurizers break down and automatically from parallel system, withdraw from, but also operate as normal of all the other pressurizers, and whole air-conditioning system still can be fallen appearance work.
Described vehicle air conditioning has two cover independent compressed machine cooling system devices, and the compressor of every suit refrigerating system device provides three-phase alternating current by a frequency converter, under variable mode, to move independently.
Two frequency-changeable compressors 8 of said vehicle air conditioning and 9 and indoor fan 11, outdoor fan 10 all drive through frequency converter independently separately.
Each frequency changer is identical, is address code difference separately, and address code is set through the toggle switch on the module.
Above-mentioned 4 frequency converters all are connected on the asynchronous communication bus, and this communication bus can continue to expand load, are equally applicable to three press system, four press and multiple pressure machine control system more, and versatility is stronger.
Under the normal operation; After main control MCU receives the power-on command of central controller 4 or line control machine 5; Whether detect stabilized voltage power supply 1, converter plant 2 and each temperature sensor through sensor detection circuit 6 normal; If each transducer is all normal, then through communicating circuit, the operation of 4 frequency converters of control or stop.
Every cover compressor assembly is respectively with 1 electric expansion valve throttling, and effectively control energy is distributed.Through regulating the switch of air returning valve 15 and new air-valve 16, regulate the content of new wind.
Every cover system has 1 four-way change-over valve 12, is used for refrigeration, heats switching.
Claims (9)
1. car air-conditioner frequency conversion control system; Include main control module (20) and energy supply control module (30); The main control MCU (3) of said main control module (20); An one of which PORT COM is connected with central controller (4), vehicle communication bus through the RS485 circuit, and its another PORT COM is connected with line control machine (5) through the asynchronous communication bus
It is characterized in that: described energy supply control module (30); Its stabilized voltage power supply (1) is directly introduced the vehicle DC power supply; The dc power output end of stabilized voltage power supply (1) directly connects converter plant (2), and converter plant (2) is connected with main control MCU (3) through the asynchronous communication bus; Converter plant (2) comprises two groups of frequency converters at least, and frequency converter power input each other is connected in parallel, and the output of frequency converter connects the system unit of vehicle air conditioning separately.
2. car air-conditioner frequency conversion control system according to claim 1 is characterized in that: described stabilized voltage power supply (1) comprises two groups of pressurizers at least, and the input and output side between the pressurizer is connected in parallel separately.
3. car air-conditioner frequency conversion control system according to claim 2; It is characterized in that: the pressurizer of said stabilized voltage power supply (1); Its leading-in end of introducing the vehicle DC power supply is connected after safeties (FU1), the filter (LB1) successively, and IGBT carries out the HF switch conversion through controller control; And through the output of transformer (TR1) isolation coupling; Two outputs of transformer (TR1) are respectively through linking together behind diode D1, the diode D2; And the input of access filter inductance (L1); Electric capacity (C3) is connected in parallel on the centre tap place of the output and the transformer (TR1) of filter inductance (L1), promptly is connected in parallel on the output two ends of stabilized voltage power supply (1);
The output of stabilized voltage power supply (1) connects the power input of converter plant (2).
4. car air-conditioner frequency conversion control system according to claim 3; It is characterized in that: after the power supply output negative terminal of pressurizer passes through serial connection one over-current detection resistance (R3); Be connected the input negative terminal of converter plant (2), over-current detection resistance (R3) is connected between the over-current detection end of controller simultaneously.
5. according to claim 1,2,3 or 4 described car air-conditioner frequency conversion control systems; It is characterized in that: the frequency converter of said converter plant (2); Adopt IPM module PM25CLA120 chip; Include upper and lower each three brachium pontis that 6 igbts (IGBT) are formed, each is exported each mutually and is made up of a upper and lower brachium pontis.
6. car air-conditioner frequency conversion control system according to claim 5 is characterized in that: used each pin of IPM module of frequency converter is respectively:
Pin Vup1, Vvp1 and Vwp1 are respectively last three brachium pontis driving power positive terminals;
Pin Vupc, Vvpc and Vwpc are respectively last three brachium pontis driving power negative pole ends;
Pin Vn1 is following three brachium pontis driving power positive terminals;
Pin Vnc is following three brachium pontis driving power negative pole ends;
Pin Up, Vp and Wp are the driving signal input of last three brachium pontis;
Pin Un, Vn and Wn are the driving signal input of following three brachium pontis;
Pin P is the input positive terminal of the whole DC power supply of frequency converter;
Pin N is the input negative pole end of the whole DC power supply of frequency converter;
Pin U, V and W are respectively the outputs of the whole three-phase alternating current of frequency converter;
Pin Ufo Vfo and Wfo are respectively the failure output terminals of last three brachium pontis;
Pin Fo is the fault common output end of following three brachium pontis.
7. vehicle air conditioning method for controlling frequency conversion; It is characterized in that: the vehicle DC power supply directly is introduced into the energy supply control module (30) of air-conditioning frequency-changing control system; Export a direct current through the voltage stabilizing of stabilized voltage power supply (1) and give converter plant (2); Many groups frequency converter by converter plant (2) provides three-phase alternating current to the system unit of air-conditioning separately, moves under variable mode to drive each system unit of air-conditioning.
8. vehicle air conditioning method for controlling frequency conversion according to claim 7 is characterized in that: said stabilized voltage power supply (1) has the parallel redundancy structure, and the input and output side of organizing pressurizer is connected in parallel separately.
9. vehicle air conditioning method for controlling frequency conversion according to claim 8; It is characterized in that: described vehicle air conditioning has two cover independent compressed machine cooling system devices; The compressor of every suit refrigerating system device provides three-phase alternating current by a frequency converter, and under variable mode, moves independently of one another.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100033306A CN101237215B (en) | 2007-02-02 | 2007-02-02 | Car air-conditioner frequency conversion control system and its method |
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| CN2007100033306A CN101237215B (en) | 2007-02-02 | 2007-02-02 | Car air-conditioner frequency conversion control system and its method |
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| CN101237215A CN101237215A (en) | 2008-08-06 |
| CN101237215B true CN101237215B (en) | 2012-01-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5533772B2 (en) * | 2011-04-19 | 2014-06-25 | 株式会社デンソー | Air conditioner for vehicles |
| CN103684000A (en) * | 2012-09-11 | 2014-03-26 | 山东朗进科技股份有限公司 | Power supply technology for passenger train air conditioning unit, and power supply device for passenger train air conditioning unit |
| CN103661456A (en) * | 2012-09-11 | 2014-03-26 | 山东朗进科技股份有限公司 | Novel direct-current power supply passenger train variable frequency air conditioner |
| CN104143921B (en) * | 2014-07-02 | 2018-01-19 | 核工业理化工程研究院 | Combined modular frequency converter and electric power system |
| CN112009512A (en) * | 2020-09-01 | 2020-12-01 | 中车青岛四方车辆研究所有限公司 | Environment regulation control device and method for passenger room of urban rail vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213814A1 (en) * | 2000-12-11 | 2002-06-12 | Valeo Climatisation | Electric power distribution to vehicle elements particularly to an air conditioning system |
| CN1412022A (en) * | 2001-10-19 | 2003-04-23 | 马蕙芳 | Air-conditioning system for automobile |
| JP2004343875A (en) * | 2003-05-14 | 2004-12-02 | Denso Corp | Power unit for vehicle |
| CN201032709Y (en) * | 2007-02-02 | 2008-03-05 | 莱芜市三和科技有限公司 | Vehicle air conditioner frequency conversion controller |
-
2007
- 2007-02-02 CN CN2007100033306A patent/CN101237215B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213814A1 (en) * | 2000-12-11 | 2002-06-12 | Valeo Climatisation | Electric power distribution to vehicle elements particularly to an air conditioning system |
| CN1412022A (en) * | 2001-10-19 | 2003-04-23 | 马蕙芳 | Air-conditioning system for automobile |
| JP2004343875A (en) * | 2003-05-14 | 2004-12-02 | Denso Corp | Power unit for vehicle |
| CN201032709Y (en) * | 2007-02-02 | 2008-03-05 | 莱芜市三和科技有限公司 | Vehicle air conditioner frequency conversion controller |
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Effective date of registration: 20080627 Address after: No. 105 Middle East Avenue, hi tech Zone, Shandong, Laiwu Applicant after: Longertek Technology Ltd. Address before: No. 105 Middle East Avenue, hi tech Zone, Shandong, Laiwu Applicant before: Laiwu Sanhe Technology Co., Ltd. |
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