CN2857066Y - Conversion air conditioning electrical system of bus - Google Patents
Conversion air conditioning electrical system of bus Download PDFInfo
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- CN2857066Y CN2857066Y CN 200520050000 CN200520050000U CN2857066Y CN 2857066 Y CN2857066 Y CN 2857066Y CN 200520050000 CN200520050000 CN 200520050000 CN 200520050000 U CN200520050000 U CN 200520050000U CN 2857066 Y CN2857066 Y CN 2857066Y
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- frequency converter
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Abstract
The utility model relates to an air conditioning for automobile, in particular to a frequency conversion air conditioning electrical control system of bus, wherein the control box assembly, containing PLC, controls a secondary excitation synchronous generator, a rectifier filter, a frequency converter, a top-mounted air conditioner actuator; the action routine of each link is written into the PLC programmable controller, wherein the initiating signal is connected to the PLC by an operation panel and indicates the excitation closed loop system to supply exciting current to the generator which outputs alternating voltage R, S, T to the rectifier filter to obtain direct current voltage connected to the frequency converter; the voltage U, V, W treated by inversion and frequency conversion is connected to the control switch to act the AC contactor and is also connected to the top-mounted air conditioner to refrigeration; the abnormal signal of the top-mounted air conditioner actuator is connected to the protective circuit, and then PLC emits a stop instruction.
Description
Technical field
The utility model relates to the air-conditioning that automobile is used, and refers in particular to motor bus convertible frequency air-conditioner electric control system.
Background technology
The control mode of traditional motorcar air conditioner is when cryogenic temperature reaches design temperature in the railway carriage; refrigeration compressor disconnects compressor by electromagnetic clutch; the temperature variation fluctuation is big in the railway carriage; moreover active and passive type compressor working medium all will be carried with long tube; working medium is easily revealed, and active oil consumption is big, and the both belongs to opened compressor and safeguards that environment is poor; working medium is easily revealed, very adverse environment protection.
Summary of the invention
The purpose of this utility model is improved at shortcoming that exists in the background technology and problem, provides a kind of with the novel concept design, adopts the motor bus convertible frequency air-conditioner electric control system of brushless excitation generator, roof frequency conversion refrigerating plant and PLC control.
The technical solution of the utility model: the control box assembly control secondary excitation synchronous generator, rectifier filer, frequency converter, the top-mounted air conditioner device topworks that comprise PLC, each link operation program all writes in the PLC Programmable Logic Controller, wherein enabling signal is connected to PLC instruction excitation closed-loop system by guidance panel and provides exciting current to generator, generator output AC voltage R, S, T be to rectifier filer, and by behind the rectifying and wave-filtering DC voltage being connected to frequency converter; Voltage U after inversion, the frequency conversion, V, W are connected to gauge tap again and make the A.C. contactor action, and voltage is connected to top-mounted air conditioner device refrigeration again; The abnormal signal of top-mounted air conditioner device topworks is connected to holding circuit and sends stop instruction by PLC.
Working routine of the present utility model is as follows:
1, the controlled device instruction of generator, under engine driven, send a level and smooth three-phase alternating current, behind rectifying and wave-filtering, send frequency converter assembly and control box assembly, when engine speed fluctuation and idling, fluctuation will appear in the voltage of generator output, the control box assembly will add magnet excitation automatically, make generator output voltage quickly recover to former setting valve, make three casees balances of voltage of output.
2, control of conversion device work, frequency converter work is controlled by the control box instruction, the control box assembly can be gathered the every data in railway carriage temperature and the overhead refrigeration system, unusual etc. comprehensive in addition as the temperature rise of line pressure machine, current work, the electric current that frequency converter is sent can change with instruction, when cryogenic temperature reached design temperature in the railway carriage, controller stopped the instruction compression machine, and ventilation blower is running as usual.
3, controller can instruct frequency converter to start the voltage to 50HZ380V from 0 frequency, has effectively controlled the starting current of each motor.
4, the advantage of this controller maximum concentrates on generator, the closed loop adjustment of controller frequency converter, when generator operation during at low speed, the controller instruction improves excitation voltage, when reaching when adjusting voltage, frequency converter frequency reducing work under the PC instruction, make each motor operate in operate as normal under safety frequency and the voltage, when generator output voltage is higher than setting valve, frequency converter will be stabilized in 380V50HZ to voltage automatically, to guarantee compressor, the evaporation fan condensation fan is unlikely to electric current and increases and transship, and as safe as a house this is advantage and advance in the native system design, and at present domestic all do not have this product and occur.
5, native system has very perfect defencive function, is divided into controller protection, frequency converter protection, generator protection, overhead and partly protects.1. controller protection: controller is provided with air switch, only makes overload protection, and any disconnection total system all quits work; Each motor all is provided with the arbitrary protection of heat protection and PLC occurs and immediate instruction is shut down and sent the signal indication.2. frequency converter protection: in the program that all defencive functions of this frequency converter all are provided with in PC, divide open-phase protection, overload protection, the too high protection of heating radiator temperature rise, input voltage is lower than the setting value protection, and input voltage is higher than the setting value protection.When promptly quitting work appears in any defencive function, the institute position of being out of order can appear on the display, protect very perfect.3. generator protection: this generator is provided with weak magnetic protection and overload protection, and when above-mentioned fault occurring, controller can send the protection instruction and shut down.4. overhead is partly protected: all protections of overhead part all convert electric signal to and deliver to control assembly, are undertaken comprehensive and send instruction making each motor enter defence program by the PLC controller.Overhead protection partial pressure protection and temperature protection and defrosting protection, when the protection action appearred in pressure protect and the protection of overtemperature degree, its analog quantity converted electric signal to and sends into control assembly and enter PLC, sends cutoff command, and demonstrates fault-signal.The defrosting protection only stops compressor operating when guard signal occurring, and other motor then runs well, and treats to start automatically after defrosting is finished.
Description of drawings
Fig. 1 is the utility model functional-block diagram
Fig. 2 is the utility model system electrical schematic diagram
Fig. 3 is the utility model frequency converter electrical schematic diagram
Among Fig. 2: the SIV frequency converter, the PW24V power module of voltage regulation of working, the PLC programming controller, KM11, KM12 compressor contactor, KM13, KM14 condensation fan, evaporation fan, FR13 condensation fan electrothermal relay, FR14 evaporation fan electrothermal relay, each motor air switch of QF1, the QF2 power module, ZA1 direct supply contactor, KA1 compressor train 1, solenoid valve auxiliary reclay, KA2 compressor 2, the solenoid valve auxiliary reclay, KA3 is the fault display lamp for ZA1 Contactor Starting auxiliary reclay, HL1, JQZ is a generator exciter, the ZL rectifier filer.
Among Fig. 3: V1 is soft connection module, and V3-V5 is the IGBT inverted power module, the T1-T3 current sensor, the direct high voltage connector of KM1, the Z1-Z2 out put reactor, the L1 filter inductance, M1-M6 cooling fan control printed panel divides interface board, power driving device and PC plate, X1 is the display interface device end on the interface board, X3 is working power ± 24V interface, and 303 start line end, 304 fault line ends, C1 is a filter capacitor, and R2 is a bleeder resistance.
Embodiment
As shown in Figure 1, the utility model comprises control box assembly control secondary excitation synchronous generator, rectifier filer, frequency converter, the top-mounted air conditioner device topworks of PLC, each link operation program all writes in the PLC Programmable Logic Controller, carry out coordination by instruction, wherein enabling signal is connected to PLC instruction excitation closed-loop system by guidance panel and provides exciting current to generator, generator output AC voltage R, S, T be to rectifier filer, and by behind the rectifying and wave-filtering DC voltage being connected to frequency converter; Voltage U after inversion, the frequency conversion, V, W are connected to gauge tap again and make the A.C. contactor action, and voltage is connected to top-mounted air conditioner device refrigeration again; Excitation detects link as detecting the generator voltage fluctuation, promptly sends into revised exciting current by the excitation closed-loop system to generator, makes generator send stable voltage; The topworks of top-mounted air conditioner device is unusual as occurring, and its abnormal signal is connected to holding circuit and sends stop instruction by PLC again.
A.C. contactor in the control box assembly described in the utility model comprises KM11, the KM12 that controls compressor, KM13, the KM14 of control condensation fan evaporation fan, power supply air switch QF1, QF2, the KA1 of control electromagnetic valve auxiliary reclay, KA2, whole working power 24V, Voltage stabilizing module insulating power supply 24V+24V-.Described excitation closed-loop system and excitation detect the module that link is made up of integrated circuit, resistance, electric capacity.Described holding circuit is by compressor exhaust temperature protector FT12, FT14, pressure-head switch FP11, FP13, and the defrosting temperature protector is formed.
As shown in Figure 2, air switch QF1 closes, QF2, D.C. contactor ZA1 closure, SIV and PW get electric PLC and enter preparation routine, generator also enters preparation routine under the engine rotation situation, turn gauge tap SA1-R08 ventilation blower enters running program, this moment, excitation device entered excitatory state, generator will send three-phase alternating current, after rectifier rectification filtering, send into SIV and carry out the frequency conversion preparation by the DC power contactor, No. 609 control lines of PLC programming controller this moment are promptly sent into frequency conversion instruction KM14 and are subjected to the PLC instruction closed, frequency converter promptly produces the upwards voltage of raising frequency gradually of 0 frequency, make compressor, ventilation blower upwards carries out soft start from 0 frequency, when frequency reaches 50HZ, just finished weak cold refrigeration link during voltage 380V.As long as will to control that master cock beats to R10 shelves KM12 be that the closed compressor identical time solenoid valve that will turn round is opened for No. two if enter strong cold pattern, working medium promptly enters No. two compressor starts and forces cold pattern.Shutdown mode is that master cock SA1 beats to shutdown, and promptly all motors compressor that quits work has and just all stops refrigeration work the duration of runs of the automatic vacuum of 8 seconds kind.
As shown in Figure 3, after the voltage 510V-750V direct current of adjusting inserts X1:1 * 1:2 ± 24V power connection, the KM1 D.C. contactor hits and closes the L102-L103 closed path and enter in the NBQ through the R1 power resistor, whole frequency converter is in to be prepared the frequency conversion stage, when control box is sent the enabling signal 609 of coming to and is entered 303 the end of a thread, it is the frequency converter ingoing power frequency conversion stage, the conducting of frequency converter V1 controllable silicon begin from 0 frequently progressively frequency and voltage boosting exchange three-phase output until reaching 50HZ380V, its output is delivered to the Z1-Z2 outputting inductance and is delivered to control box.When the voltage that sends when generator is lower than setting valve, the frequency converter PC detects that setting valve is low will to send steering order, the control trigger reduces frequency conversion frequency and output AC voltage, PC instruction triggers device frequency stabilization when input direct voltage is higher than setting valve, voltage stabilizing pattern work limit is exported at frequency 50HZ380V voltage.When machine intimate breaks down, will send one group of electric signal 304 to control box, control box is quit work.Every data of the very complete output of display port 2 functions all can be presented on the display, wherein have input voltage, output current, electric voltage frequency, IGBT temperature, fault to show power KW number etc.A stopping signal de-interfaced 303 line ends get final product, and that is to say that control box do not send 609 signals, and frequency converter promptly quits work to enter and treats starting state.
The principle of work of the utility model circuit: 4 contactors, the closed loop energized circuit and the generator commutation circuit ZL of 3 auxiliary reclays and generator, the circuit signal trend is that control panel SA1 sends the operation start instruction, PLC promptly instructs closed loop field regulator BHLZTJQ to send exciting current by LZ+LZ-to generator in the case, generator drives backspin at the automobile sustainer and transfers three-phase alternating voltage S, R, T, behind rectifier ZL rectifying and wave-filtering, send into frequency converter by D.C. contactor ZA, under the PC instruction, become three casees adjustable AC power of a frequency accidental and send into control box again, each contactor auxiliary reclay action is distributed to each compressor with three-phase alternating voltage under the instruction of PLC, evaporation fan, condensation fan, control electromagnetic valve, open solenoid valve, so just finished whole startup process of refrigerastion and in railway carriage, carried cold air.Top-mounted air conditioner divides right-hand man's device just the same, if weak cold link PLC machine is used on one side following of control panel control, strong cold finger order just all runnings of each actuating motor of right-hand man down, if fluctuation appears in engine speed, three casees alternating voltages of generator output can be followed fluctuation, the DC voltage of rectifier output also can fluctuate, excitation detection link promptly can detect the DC voltage and the comparative voltage of fluctuation and compare, relatively the back energized circuit promptly can be sent revised field voltage, make generator revise the voltage that sends immediately and be maintained to setting valve, if generator does not also reach the voltage of adjusting, then frequency converter can change frequency and output voltage, and each actuating motor is worked under safety frequency and voltage.Be provided with high-voltage switch gear, low tension switch, defrost switch in the overhead, arbitrary switch exceeds setting valve and is about to signal and sends in the control box, and the PLC instruction stop is also lighted signal lamp and reported to the police.The defrost switch exceeds its electric signal of setting valve, and to send into PLC be that the instruction compression machine stops and to treat Auto Power On after the defrost.When the instruction compression machine is started shooting, frequency converter is until the 50HZ380V voltage of adjusting from the zero frequency starting, the starting current of effectively having controlled each motor, when generator does not reach setting valve because of rotating speed is too low, frequency converter reduces frequency and voltage, make the operation of each motor safety, if when generator exceeds setting valve, frequency converter frequency-and voltage-stabilizing under the PC instruction is operated in 50HZ380V.
Claims (4)
1, a kind of motor bus convertible frequency air-conditioner electric control system, it is characterized in that by the control box assembly control secondary excitation synchronous generator, rectifier filer, frequency converter, the top-mounted air conditioner device topworks that comprise PLC, each link operation program all writes in the PLC Programmable Logic Controller, wherein enabling signal is connected to PLC instruction excitation closed-loop system by guidance panel and provides exciting current to generator, generator output AC voltage R, S, T be to rectifier filer, and by behind the rectifying and wave-filtering DC voltage being connected to frequency converter; Voltage U after inversion, the frequency conversion, V, W are connected to gauge tap again and make the A.C. contactor action, and voltage is connected to top-mounted air conditioner device refrigeration again; The abnormal signal of top-mounted air conditioner device topworks is connected to holding circuit and sends stop instruction by PLC.
2, motor bus convertible frequency air-conditioner electric control system according to claim 1, it is characterized in that the A.C. contactor in the described control box assembly comprises KM11, the KM12 that controls compressor, KM13, the KM14 of control condensation fan evaporation fan, power supply air switch QF1, QF2, the KA1 of control electromagnetic valve auxiliary reclay, KA2, whole working power 24V, Voltage stabilizing module insulating power supply 24V+24V-.
3, motor bus convertible frequency air-conditioner electric control system according to claim 1 is characterized in that the module that described excitation closed-loop system is made up of integrated circuit, resistance, electric capacity.
4, motor bus convertible frequency air-conditioner electric control system according to claim 1 is characterized in that described holding circuit by compressor exhaust temperature protector FT12, FT14, pressure-head switch FP11, FP13, and the defrosting temperature protector is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050000 CN2857066Y (en) | 2005-05-12 | 2005-05-12 | Conversion air conditioning electrical system of bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050000 CN2857066Y (en) | 2005-05-12 | 2005-05-12 | Conversion air conditioning electrical system of bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2857066Y true CN2857066Y (en) | 2007-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520050000 Expired - Lifetime CN2857066Y (en) | 2005-05-12 | 2005-05-12 | Conversion air conditioning electrical system of bus |
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| Country | Link |
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| CN (1) | CN2857066Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100468947C (en) * | 2007-03-16 | 2009-03-11 | 南京航空航天大学 | AC motor matrix type controller with DC excitation function |
| CN102736621A (en) * | 2012-07-05 | 2012-10-17 | 中南大学 | Detection system of electrical equipment of urban rail vehicle |
| CN108649530A (en) * | 2018-07-11 | 2018-10-12 | 安徽华茂纺织股份有限公司 | A kind of threephase motor temperature control light current and forceful electric power isolation circuit |
| CN109649427A (en) * | 2019-01-30 | 2019-04-19 | 重庆中车长客轨道车辆有限公司 | Track train and its empty spring device |
-
2005
- 2005-05-12 CN CN 200520050000 patent/CN2857066Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100468947C (en) * | 2007-03-16 | 2009-03-11 | 南京航空航天大学 | AC motor matrix type controller with DC excitation function |
| CN102736621A (en) * | 2012-07-05 | 2012-10-17 | 中南大学 | Detection system of electrical equipment of urban rail vehicle |
| CN102736621B (en) * | 2012-07-05 | 2014-07-02 | 中南大学 | Detection system of electrical equipment of urban rail vehicle |
| CN108649530A (en) * | 2018-07-11 | 2018-10-12 | 安徽华茂纺织股份有限公司 | A kind of threephase motor temperature control light current and forceful electric power isolation circuit |
| CN108649530B (en) * | 2018-07-11 | 2024-04-09 | 安徽华茂纺织股份有限公司 | Temperature control weak current and strong current isolation circuit of three-phase motor |
| CN109649427A (en) * | 2019-01-30 | 2019-04-19 | 重庆中车长客轨道车辆有限公司 | Track train and its empty spring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN HUAQIANG ELECTRICAL APPLIANCES CO., LTD. Free format text: FORMER OWNER: YUEYANG VAQOUNG ELECTRIC POWER + ELECTRONIC CO., LTD. Effective date: 20090522 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090522 Address after: Hunan City, Yuelu District province Changsha Changsha high tech Development Zone Lugu mountain pine road base, zip code: 410205 Patentee after: Hunan Huaqiang Electrical Appliance Co., Ltd. Address before: 8, Hubin Avenue, Yueyang, Hunan, China: 414000 Patentee before: Huaqiang Power Electronic Co., Ltd., Yueyang |
|
| C56 | Change in the name or address of the patentee |
Owner name: HENAN HUAQIANG ELECTRIC CO., LTD. Free format text: FORMER NAME: HU NAN VAQOUNG ELECTRICAL APPLIANCE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 410205 Hunan city high tech Development Zone Changsha Changsha Mountain Pine Valley base Road No. 669 Patentee after: Hunan Vaqoung Electric Co. Ltd. Address before: Yuelu District City, Hunan province 410205 Changsha Changsha high tech Development Zone Lugu Mountain Pine Road Base Patentee before: Hunan Huaqiang Electrical Appliance Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Conversion air conditioning electrical system of bus Effective date of registration: 20110720 Granted publication date: 20070110 Pledgee: Pudong Development Bank of Shanghai, Limited by Share Ltd, Changsha branch Pledgor: Hunan Vaqoung Electric Co. Ltd. Registration number: 2011990000240 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150512 Granted publication date: 20070110 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150626 Granted publication date: 20070110 Pledgee: Pudong Development Bank of Shanghai, Limited by Share Ltd, Changsha branch Pledgor: Hunan Vaqoung Electric Co. Ltd. Registration number: 2011990000240 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model |