CN104236916A - Load test system of generator for engine - Google Patents
Load test system of generator for engine Download PDFInfo
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- CN104236916A CN104236916A CN201410486184.7A CN201410486184A CN104236916A CN 104236916 A CN104236916 A CN 104236916A CN 201410486184 A CN201410486184 A CN 201410486184A CN 104236916 A CN104236916 A CN 104236916A
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Abstract
The invention discloses a load test system of a generator for an engine. The load test system comprises the generator for the engine, a controller, an engine operation detection module, voltage and current sensors, a power regulating module, a resistive load and an over-temperature and overcurrent protection module. The power regulating module comprises an inverter booster, a voltage regulator, a voltage regulation driving control module and an overcurrent, overvoltage and undervoltage protection module. Because a variable current and voltage are provided for the load by the adjustable power regulating module, the output of the power regulating module can be regulated according to the actual loads of different generators. The defect that when a load is simulated by an existing high-accuracy high-power resistor, the load value cannot be changed conveniently is overcome, and the load test system is particularly suitable for situations of continuous real-time changing high-power output.
Description
Technical field
The present invention relates to car, ship engine generator test technical field, particularly relate to a kind of engine generator loading pilot system.
Background technology
In the electrical system of automobile, generator provides all power supplys to car load.It is responsible for converting mechanical energy to electric energy, ensures the power supply of each circuit, element.In order to provide more comfortable environment by bus to passenger inside the vehicle, existing vehicle on the market is nearly all furnished with air-conditioning, and compressor of air conditioner is then that the vitals of whole air-conditioning system is quite as the heart of the mankind.Therefore, a kind of test unit is needed to carry out analysis and evaluation to the generator of installed engine, air-conditioning, air compressor machine reliability.
Existing generator of engine load test equipment is made up of control knob, contactor and ohmic load mostly.Manually operate at the other scene of engine, the connection of controlling resistance carrys out fictitious load size, and air-conditioning, air compressor machine are all generally dry run or a fixing load.Each engine start and stop or return idle running time all need testing crew to on-site manual open, close experimental provision.The personal safety that engine test room temperature is high, noise is large, the high existence of rotating speed is certain is dangerous.The size of linear regulation load can not can only reduce or the mode that increases progressively with dead load, without overvoltage/undervoltage, overload protection, automatically can not run, can not be integrated into without compunication Long-distance Control the pilot system of engine with the start and stop of engine.
Chinese invention patent application (CN 103698131 A) discloses a kind of engine accessory power rating load simulation system, its goal of the invention is to provide a kind of engine accessory power rating load simulation system, by the air compressor machine load simulation module in engine accessory power rating, air conditioner load analog module and generator loading analog module are integrated into a system, when carrying out engine rig test, can these load simulation modules be controlled separately or be controlled simultaneously, each load simulation module can be provided in the load of change in certain limit, and system can carry out electrodeless adjustment to load, thus make the versatility of this system very thus make the versatility of this system very strong, to avoid existing load simulation system because needing to transplant the defect of the poor universality that load has.But because it lacks the effective monitoring device to engine condition, load test equipment can not automatically run with the start and stop of engine and regulate, and without overvoltage/undervoltage, overload protection, experiment can not be stopped when running into fault in time, cause systemic breakdown.Meanwhile, the power bracket that existing power conditioning module can regulate very limited (DC30V0 ~ 0.6KW), cannot adapt to the situation that generator loading power is increasing.
Summary of the invention
For the deficiency that above-mentioned prior art exists, technical matters to be solved by this invention is to provide a kind of intelligence generator of engine load test system reliably, be specially adapted to the situation needing high-power adjustment (0 ~ 6KW), according to engine different rotating speeds and generator different model setting actual loading, and can regulate according to the loading of the stopping of engine, idling, the automatic control load testing equipment of running and watt level.
For achieving the above object, the technical scheme that the present invention takes is: a kind of engine generator loading pilot system, comprises generator of engine, for pilot system provides direct current power;
Controller, to whole pilot system implementing monitoring, and to the data analysis collected, completes test according to the program-control test system pre-set, provides early warning information simultaneously, assign out code, protection test system;
Engine running detection module, is connected with controller, for sending present engine working condition to controller;
Voltage, current sensor, for gathering the charge condition that generator sends, deliver to controller;
Power conditioning module, comprises inversion boosting device, pressure regulator, pressure regulation drive control module and overcurrent, overvoltage, under-voltage protective module; Described inversion boosting device is used for the low-voltage DC that sent by generator and changes High Level AC Voltage into, and by pressure regulator output voltage and electric current to ohmic load end; Described pressure regulation drive control module is used for the size controlling pressure regulator output voltage and electric current according to controller instruction; Described overcurrent, overvoltage, under-voltage protective module detect inversion boosting device, send the data to controller simultaneously and also receive the protection act signal of self-controller to protect inversion boosting device;
Ohmic load, realizes linear regulation by controller, the voltage and current that received power adjustment module exports, and completes test; And
Excess temperature, overcurrent protection module, when ohmic load occur cooling exception or resistance overcurrent time, for by signal feedback to controller, controller gives the alarm, and stops the control of pressure regulator to export simultaneously.
Further, also comprise engine air-conditioning, and the air conditioning test module be attached thereto.
Further, also comprise engine air compressor, and the Air Compressor Test module be attached thereto.
The present invention has following remarkable advantage: provide variable current, a voltage owing to adopting power-adjustable adjustment module to load, exported by the actual loading Modulating Power adjustment module according to different generator, when overcoming existing high-accuracy high-power resistance fictitious load, load value changes inconvenient shortcoming, is especially applicable to the situation of the high-power output of continuous real-time change simultaneously.
Three tentative modules of this equipment can follow the startup of engine, stopping, running and automatically running, and be brought together by the operated from a distance of computer terminal and block testing stand, control simple and clear, in the test that can very easily the control integration of each tentative module be run to engine program controlled automatic.
Accompanying drawing explanation
Fig. 1 is the present invention one complete embodiment system connection diagram;
Fig. 2 is the present invention one complete embodiment System Working Principle figure;
Fig. 3 is a preferred embodiment of the present invention system connection diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail.
Fig. 1 is the system connection layout of a kind of engine generator loading of the present invention pilot system complete embodiment, the all environment will simulated when adding generator of engine work, include controller, described controller is connected with manual operation alarm module 106 with Operation display module 105, is used for carrying out personal monitoring and operation to system.
Described controller is connected with engine monitoring modular 124, power conditioning module 122, voltage, current sensor 121, ohmic load 123, air conditioning test module 131, Air Compressor Test module 141 respectively by self digital I/O module 111, analog input module 112, analog output module 113, carries out data acquisition, monitoring and analysis to whole pilot system.The engine air-conditioning 130 of described air conditioning test module 131, Air Compressor Test module 141 difference connecting analog test and engine air compressor 140.
The positive-negative output end of generator of engine 120 is connected with the positive and negative of power conditioning module 122; by the CPU programmed control numeral I/O module 111 in controller; control multichannel protective device again to connect; and export analog control signal by analog output module 113 and control power conditioning module 122, simulate the load of generator.
By the size of Modulating Power adjustment module 122, the size realizing load simulates the change of power load on car load; Change air conditioner refrigerating cooling fan rotation speed and simulate air conditioner refrigerating load; Air compressor machine exhaust solenoid valve is regulated to control air compressor machine load.Through evaluating the reliability of generator 120, engine air-conditioning 130 compressor, air compressor machine 140 the long circulation experiment of generator of engine 120, engine air-conditioning 130 compressor, air compressor machine 140.
Working-flow as shown in Figure 2, the whole zero setting S201 of generator loading pilot system opening initialization.The local S203 or computer long-distance control S204 of S202 is selected according to control mode; select on the touch-screen of equipment, directly click controlling value, Protection parameters setting S205 during local control, seletion calculation machine remote control room is then directly clicked the corresponding button and is arranged and export on the software of computer end.
After engine start (by being greater than idling setting value 600 ~ 1000r/min to engine running monitoring S207) runs; after CPU carries out calculation process according to current control setting value and parameter protection value, control corresponding module by each module channels output and automatically run.
Run by the current controlling value set during each function test module operation work; as emerged in operation warning, fault S206; CPU carries out discriminant alarm by pre-set parameter and program and still protects shutdown action; and shown by touch-screen, pilot lamp, computing machine by current fault-signal simultaneously and remind testing crew, and determine warning or guilty culprit reason fast.
During engine stop S211, each module can stop exporting by system automatically, waits for that engine runs modules when again running automatically.Now, if tested S212 to be judged as "Yes", then generator loading testing equipment has received stop signal, and system will close S213, not in each module of operation and by standby after high temperature resistance load region time delay cooling.
Fig. 3 is the embodiment that the present invention is applied in separately generator of engine (DC24 ~ 30V 0 ~ 200A power 6KW), describe the composition of the power conditioning module 122 of pressure regulation or unsteady flow in detail, DC24V ~ 30V direct current for realizing generator 120 to send first carries out inversion boosting and carries out the mode of load regulation closed-loop control again to complete test objective to AC220V, simultaneously by controlling automatic operation and the load of power conditioning module 122 to the operation supervision of engine.
The both positive and negative polarity output terminal of generator 120 and the corresponding connection of power conditioning module 122 both positive and negative polarity of generator loading pilot system; when engine running drive electrical generators 120 running sends electric energy; the AD acquisition module delivering to controller 301 through voltage, current sensor 121 collection carries out process and becomes AD signal and deliver to CPU and carry out calculation process, virtual voltage, electric current are shown and carry out reporting to the police, Protection parameters and engine operating state contrast and protect.
When electric energy is through inversion boosting device 306, controller 301 differentiates the operating condition of engine by engine running detection module 124 pairs of engine running testing results, control inverter boosting 306 work.The overcurrent of inversion boosting device 306, overvoltage, under-voltage protective module 303 detect simultaneously, and send the data to controller 301 and receive the protection act signal of self-controller 301 to protect inversion boosting device 306.
DC24 ~ 30V voltage becomes through inversion boosting device 306 the AC220V power supply that we commonly use, and receives signal that controller 301 sends and comes regulation output voltage and electric current to ohmic load 123 end, realize the linear regulation of generator loading by pressure regulator 307.
When controller 301 receives control setting value; controller 301 is by differentiating the operating condition (shutdown, idling, operation) of engine to the detection of engine running; voltage raises by control inverter work; the value that AD acquisition module is sent here and control setting value and compare and export AD signal to pressure regulation drive control module 304 convert the corresponding 0 ~ 6KW of 4 ~ 20mA to control the output of pressure regulator 307 after PID arithmetic; and undertaken contrasting real-time adjustment by sensor sample above, reach setup control value.
If when cooling exception or resistance overcurrent appear in ohmic load, excess temperature, overcurrent protection module 305 are by signal feedback to controller 301, and controller 301 gives the alarm, and stop the control of pressure regulator 307 to export simultaneously.
The specific embodiment of the invention is in sum only the preferred embodiment of the present invention, is not intended to limit the restriction of scope.Therefore, any do within technical characteristic of the present invention change, modification, substitute, combination or simplify, all should be equivalence substitute mode, be included within protection scope of the present invention.
Claims (3)
1. an engine generator loading pilot system, is characterized in that, comprise
Generator of engine, for pilot system provides direct current power;
Controller, to whole pilot system implementing monitoring, and to the data analysis collected, completes test according to the program-control test system pre-set, provides early warning information simultaneously, assign out code, protection test system;
Engine running detection module, is connected with controller, for sending present engine working condition to controller;
Voltage, current sensor, for gathering the charge condition that generator sends, deliver to controller;
Power conditioning module, comprises inversion boosting device, pressure regulator, pressure regulation drive control module and overcurrent, overvoltage, under-voltage protective module; Described inversion boosting device is used for the low-voltage DC that sent by generator and changes High Level AC Voltage into, and by pressure regulator output voltage and electric current to ohmic load end; Described pressure regulation drive control module is used for the size controlling pressure regulator output voltage and electric current according to controller instruction; Described overcurrent, overvoltage, under-voltage protective module detect inversion boosting device, send the data to controller simultaneously and also receive the protection act signal of self-controller to protect inversion boosting device;
Ohmic load, realizes linear regulation by controller, the voltage and current that received power adjustment module exports, and completes test; And
Excess temperature, overcurrent protection module, when ohmic load occur cooling exception or resistance overcurrent time, for by signal feedback to controller, controller gives the alarm, and stops the control of pressure regulator to export simultaneously.
2. a kind of engine generator loading pilot system according to claim 1, is characterized in that, also comprise engine air-conditioning, and the air conditioning test module be attached thereto.
3. a kind of engine generator loading pilot system according to claim 1, is characterized in that, also comprise engine air compressor, and the Air Compressor Test module be attached thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410486184.7A CN104236916B (en) | 2014-09-22 | 2014-09-22 | Load test system of generator for engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410486184.7A CN104236916B (en) | 2014-09-22 | 2014-09-22 | Load test system of generator for engine |
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| CN104236916A true CN104236916A (en) | 2014-12-24 |
| CN104236916B CN104236916B (en) | 2017-01-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104931264A (en) * | 2015-06-11 | 2015-09-23 | 滁州市西控电子有限公司 | Novel engine data acquisition and monitoring system |
| CN107817407A (en) * | 2017-12-13 | 2018-03-20 | 株洲中车电气科技有限公司 | A kind of locomotive load test method and load testing apparatus |
| CN108919115A (en) * | 2018-05-15 | 2018-11-30 | 中国航发湖南动力机械研究所 | adjustable resistance load, loading system and loading method |
| CN112722321A (en) * | 2020-12-25 | 2021-04-30 | 中国船舶重工集团公司第七0三研究所 | Intelligent loading method for airplane high-voltage direct-current generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931264A (en) * | 2015-06-11 | 2015-09-23 | 滁州市西控电子有限公司 | Novel engine data acquisition and monitoring system |
| CN107817407A (en) * | 2017-12-13 | 2018-03-20 | 株洲中车电气科技有限公司 | A kind of locomotive load test method and load testing apparatus |
| CN108919115A (en) * | 2018-05-15 | 2018-11-30 | 中国航发湖南动力机械研究所 | adjustable resistance load, loading system and loading method |
| CN108919115B (en) * | 2018-05-15 | 2020-10-23 | 中国航发湖南动力机械研究所 | Adjustable resistance load, loading system and loading method |
| CN112722321A (en) * | 2020-12-25 | 2021-04-30 | 中国船舶重工集团公司第七0三研究所 | Intelligent loading method for airplane high-voltage direct-current generator |
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| CN104236916B (en) | 2017-01-18 |
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Effective date of registration: 20181228 Address after: 410005 Advanced Energy Storage and Energy Conservation Creative Demonstration Industrial Park No. 169, Second Section of Renmin East Road, Changsha Economic Development Zone, Hunan Province, 6 buildings 104 Patentee after: Hunan Advantech Electromechanical Equipment Co., Ltd. Address before: 410000 Yangjia Formation, Kaihui Village, Kaihui Township, Changsha County, Hunan Province Patentee before: CHANGSHA YANCHUANG ELECTRICAL CO., LTD. |