CN105093108A - Dynamic characteristic on-line monitoring system in motor starting process - Google Patents
Dynamic characteristic on-line monitoring system in motor starting process Download PDFInfo
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- CN105093108A CN105093108A CN201510363729.XA CN201510363729A CN105093108A CN 105093108 A CN105093108 A CN 105093108A CN 201510363729 A CN201510363729 A CN 201510363729A CN 105093108 A CN105093108 A CN 105093108A
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Abstract
The invention discloses a dynamic characteristic on-line monitoring system in a motor starting process, comprising a power supply, a voltage regulator, a comprehensive test control cabinet, a tested motor, a transient torque, a rotating speed tester, a data collection and analysis device and a control platform. The power supply is an AC power supply; the voltage regulator alternatively regulate load voltage; the comprehensive test cabinet guarantees the stability of the load circuit; the transient torque and the rotating speed tester tests the transient torque and the rotating speed of the tested motor; the data collection and analysis device collects the test data, calculates and measures the energy consumption when the motor is started; and the control platform controls the system and obtains the result. The dynamic characteristic on-line monitoring system in the motor starting process can stably collect high speed data in the motor starting process, measures the energy consumption of the motor and saves the test cost.
Description
Technical field
The present invention relates to a kind of monitoring system of motor.More particularly, the present invention relates to the on-line monitoring system of the dynamic perfromance in a kind of motor starting procedure.
Background technology
Motor is a kind of equipment electric energy being converted to mechanical energy, and motor purposes is numerous, and greatly to heavy duty industrial, little have its trace to miniature toy.Although China's motor product is of a great variety, efficiency is general not high, the serious phenomenon that there is " low load with strong power ", so high efficiency motor more and more receives publicity, the energy consumption level of test motor also becomes the problem of people's attention.
At present, in AC/DC motor and electric tool test, this testing apparatus of dynamometer machine is usually used, the parameter such as torque, rotating speed, output power of the main testing of electric motors of dynamometer machine
Due to some technical reasons, still there is a lot of problem in current electric power measurement of power technology, comprising: adopt electric eddy current dynamometer or magnetic hysteresis dynamometer machine to measure motor parameter, there is software programming complexity, the technological difficulties such as curve setting, data acquisition; Existing technology, in the accurate data of very difficult high speed acquisition, cannot obtain the dynamic perfromance in motor starting procedure; Existing detection system cost is higher, and maintenance cost is larger; In existing detection system test process, heating is large, not energy-conserving and environment-protective.
So need a set ofly both can safety and stability measure, obtained accurate results, and simplified monitoring method, the on-line monitoring system of the dynamic perfromance in cost-saving motor starting procedure.
Summary of the invention
The object of this invention is to provide the on-line monitoring system of the dynamic perfromance in a kind of motor starting procedure, to test with security and stability, obtain precise monitoring result, and enormously simplify monitoring method, reduce measurement cost.
In order to realize, according to these objects of the present invention and other advantage, providing the on-line monitoring system of the dynamic perfromance in a kind of motor starting procedure, it is characterized in that, comprising:
Power supply, it is AC power;
Pressure regulator, it is connected with power supply, is added to voltage swing on load monitoring circuit with interval sampling for controlling described power supply;
Integration test switch board, it is connected with described pressure regulator, and for receiving the output current of described pressure regulator, reometer and the first voltage table is also comprised in described integration test switch board, described reometer and the first voltage table are used for transient current value and the transient voltage value of testing tested motor input terminals respectively, and described integration test switch board is also for the break-make of control load observation circuit simultaneously;
Tested motor, it is connected with described integration test cabinet, and for receiving the output current of described integration test switch board, described tested motor is also provided with electronic thermometer;
Transient torque and rotational speed detector, it is for receiving the output current of described tested motor, and described transient torque and rotational speed detector comprise:
Magnetoelectric tachometer, it is made up of speed probe and measuring appliance, described speed probe is connected with the rotating shaft of described tested motor, when the rotating shaft of tested motor rotates, drive described speed probe synchronous axial system, the voltage and current that described tested motor produces transfers to described measuring appliance through described speed probe, described measuring appliance obtains the transient rotative speed of described tested motor by the magnitude of voltage that calculates and current value, described magnetoelectric tachometer is under the rotation situation not affecting motor rotary shaft, obtain the transient rotative speed in described tested motor starting procedure, and,
Magnetoelasticity torque meter, it comprises magnetically elastic torque sensor, metering circuit and the second voltage table, described second voltage table is for testing the transient voltage value of described tested motor output end, and by described metering circuit by measured transient voltage value transmit to magnetically elastic torque sensor, described magnetically elastic torque sensor is by calculating the transient torque of described tested motor, both can obtain the transient voltage size of described tested motor output end, transient torque in described tested motor starting procedure can have been drawn again;
Data acquisition and analyser, it tests cabinet, described tested motor and described transient torque with described Comprehensive Control respectively and rotational speed detector is connected, when described tested motor starting, described Comprehensive Control test cabinet transmits transient current value and the transient voltage value of described tested motor input terminals to described data acquisition and analyser; Described electron temperature measures transient temperature during described tested motor starting, and transfers to described data acquisition and analyser by connecting circuit; The transient voltage value of transient torque, transient rotative speed and output terminal in measured tested motor starting procedure is transferred to described data acquisition and analyser by described transient torque and rotational speed detector; Whether the transient voltage value of transient torque, transient rotative speed and output terminal in the transient current value of the described tested motor input terminals received and transient voltage value and tested motor starting procedure is analyzed in conjunction with transient temperature during described tested motor starting by described data acquisition and analyser, normal to judge the starting process of described tested motor; The data obtained carries out collecting and integrating by described data acquisition and analyser, to improve test analysis efficiency;
Control desk, it is for receiving the analysis result of described data acquisition and analyser transmission, and by the break-make of described integration test switch board control load observation circuit, with the whole test process of simple and direct efficient operation.
Preferably, also comprise adjustable frequency motor, described transient torque and rotational speed detector are to described adjustable frequency motor output AC electricity frequency signal, the ac frequency signal adjustment rotating speed of described adjustable frequency motor by receiving, the back electromotive force produced to make described adjustable frequency motor is higher than the electromotive force of described power supply, reduce energy resource consumption, reduce testing cost.
Preferably, also comprise frequency-conversion control cabinet, back electromotive force is transferred to described frequency-conversion control cabinet higher than the difference electromotive force of electromotive force of source by described adjustable frequency motor, and by described frequency-conversion control cabinet, this difference electromotive force is reverse into the alternating current with power supply same frequency, same phase, by power supply feedback grid to alternating current described in described power delivery, carry out to ensure that electric energy feedback is stable, and eliminate the harmonic pollution that electrical network is caused.
Preferably, the described frequency-conversion control cabinet other end is connected with described adjustable frequency motor, and when load monitoring circuit working, described frequency-conversion control cabinet reduces its rotating speed, to produce back electromotive force by the running frequency reducing described adjustable frequency motor.
Preferably, the voltage fluctuation of described power supply is no more than 10%, to ensure that stable testing is carried out.
Preferably; interlock is provided with in described integration test switch board; when short circuit appears in described load monitoring circuit, the connection that the interlock of described integration test switch board controls between described integration test switch board and described tested motor disconnects, to protect described load circuit.
Preferably, when the temperature that described control desk receives described tested motor is higher than 60 degrees Celsius, temperature information is fed back to described integration test switch board by described control desk, and described integration test switch board auto stop is to protect described tested motor.
The present invention at least comprises following beneficial effect: owing to comprising accurate data acquisition and analyser, therefore, it is possible to stably collect data at a high speed; Owing to comprising pressure regulator, therefore, it is possible to press interval sampling many groups test data; Owing to comprising adjustable frequency motor and frequency-conversion control cabinet, therefore, it is possible to unnecessary electric energy is effectively fed back to power supply, save testing cost effect to reach; Owing to comprising integration test switch board, therefore can ensure circuit safety, ensure that test is carried out reposefully.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the schematic circuit of the on-line monitoring system circuit of dynamic perfromance in one embodiment of the present of invention in motor starting procedure;
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to instructions word to make those skilled in the art.
Embodiment 1
Fig. 1 shows according to way of realization of the present invention, comprising:
Power supply, it is connected to 220 volt AC electrical networks, and for providing electric energy for whole circuit, in order to proof load observation circuit is stablized, the voltage fluctuation of described power supply is no more than 10%;
Pressure regulator, it is connected with power supply, voltage swing on load monitoring circuit is added to for controlling described power supply, the voltage choosing 170 volts, 180 volts, 190 volts, 200 volts, 210 volts and 220 volts during test is respectively added to load monitoring circuit, with interval image data under different voltage;
Integration test switch board, it is connected with described pressure regulator, and for receiving the output current of described pressure regulator, reometer and the first voltage table is also comprised in described integration test switch board, test transient current value and the transient voltage value of described tested motor input terminals respectively, described integration test switch board is also for the break-make of control load observation circuit simultaneously;
Tested motor, it is connected with described integration test cabinet, and for receiving the output current of described integration test switch board, described tested motor is also provided with electronic thermometer, when described tested motor starting, described electron temperature measures the transient temperature of described tested motor resistance, when the temperature of described tested motor resistance is higher than 60 degree, integration test switch board by automatic cut-off power to protect tested motor from damage; And when short-circuit conditions appears in described tested motor, the connection that the interlock of described integration test switch board controls between described integration test switch board and described tested motor disconnects, to protect described load circuit;
Transient torque and rotational speed detector, it is for receiving the output current of described tested motor, and described transient torque and rotational speed detector comprise:
Magnetoelectric tachometer, it is made up of speed probe and measuring appliance, described speed probe is connected with the rotating shaft of described tested motor, when the rotating shaft of tested motor rotates, drive described speed probe synchronous axial system, the voltage and current that described tested motor produces transfers to described measuring appliance through described speed probe, and described measuring appliance obtains the transient rotative speed of described tested motor by the magnitude of voltage that calculates and current value; And,
Magnetoelasticity torque meter, it comprises magnetically elastic torque sensor, metering circuit and the second voltage table, described second voltage table is for testing the transient voltage value of described tested motor output end, and by described metering circuit by measured transient voltage value transmit to magnetically elastic torque sensor, described magnetically elastic torque sensor is by calculating the transient torque of described tested motor;
Adjustable frequency motor, it is connected with described transient torque and rotational speed detector, and for receiving described transient torque and rotational speed detector output current, the ac frequency signal adjustment rotating speed of described adjustable frequency motor by receiving, the back electromotive force produced to make described adjustable frequency motor is higher than the electromotive force of described power supply, reduce energy resource consumption, reduce testing cost;
Frequency-conversion control cabinet, its one end is connected with described adjustable frequency motor, the other end is connected with described power supply, transformed delivery of electrical energy is given described frequency-conversion control cabinet by described adjustable frequency motor, and by described frequency-conversion control cabinet, described electric energy is reverse into the alternating current with power supply same frequency, same phase, by power supply feedback grid to alternating current described in described power delivery, carry out to ensure that electric energy feedback is stable, and eliminate the harmonic pollution that electrical network is caused;
Data acquisition and analyser, it tests cabinet, described tested motor and described transient torque with described Comprehensive Control respectively and rotational speed detector is connected, when described tested motor starting, described Comprehensive Control test cabinet transmits transient current value and the transient voltage value of described tested motor input terminals to described data acquisition and analyser; Described electron temperature measures transient temperature during described tested motor starting, and transfers to described data acquisition and analyser by connecting circuit;
The transient voltage value of transient torque, transient rotative speed and output terminal in measured tested motor starting procedure is transferred to described data acquisition and analyser by described transient torque and rotational speed detector; The transient voltage value of transient torque, transient rotative speed and output terminal in the transient current value of the described tested motor input terminals received and transient voltage value and tested motor starting procedure is analyzed in conjunction with transient temperature during described tested motor starting by described data acquisition and analyser, whether normal to judge the starting process of described tested motor, and the energy consumption level of tested motor when different loads type can be recorded and judge whether the runnability of tested motor meets national standard;
Control desk, its one end is connected with described integration test switch board, the other end is connected with described transient torque and rotational speed detector, described control desk is for receiving the analysis result of described data acquisition and analyser transmission, and by the break-make of described integration test switch board control load observation circuit, with the whole test process of simple and direct efficient operation.
Embodiment 2
Another kind of way of realization of the present invention, comprising:
Power supply, it is connected to 220 volt AC electrical networks, and for providing electric energy for whole circuit, in order to proof load observation circuit is stablized, the voltage fluctuation of described power supply is no more than 5%;
Pressure regulator, it is connected with power supply, voltage swing on load monitoring circuit is added to for controlling described power supply, the voltage choosing 170 volts, 180 volts, 190 volts, 200 volts, 210 volts and 220 volts during test is respectively added to load monitoring circuit, with interval image data under different voltage;
Integration test switch board, it is connected with described pressure regulator, and for receiving the output current of described pressure regulator, reometer and the first voltage table is also comprised in described integration test switch board, test transient current value and the transient voltage value of described tested motor input terminals respectively, described integration test switch board is also for the break-make of control load observation circuit simultaneously;
Tested motor, it is connected with described integration test cabinet, and for receiving the output current of described integration test switch board, described tested motor is also provided with electronic thermometer, when described tested motor starting, described electron temperature measures the transient temperature of described tested motor resistance, when the temperature of described tested motor resistance is higher than 60 degree, integration test switch board by automatic cut-off power to protect tested motor from damage; And when short-circuit conditions appears in described tested motor, the connection that the interlock of described integration test switch board controls between described integration test switch board and described tested motor disconnects, to protect described load circuit;
Transient torque and rotational speed detector, it is for receiving the output current of described tested motor, and described transient torque and rotational speed detector comprise:
Magnetoelectric tachometer, it is made up of speed probe and measuring appliance, described speed probe is connected with the rotating shaft of described tested motor, when the rotating shaft of tested motor rotates, drive described speed probe synchronous axial system, the voltage and current that described tested motor produces transfers to described measuring appliance through described speed probe, and described measuring appliance obtains the transient rotative speed of described tested motor by the magnitude of voltage that calculates and current value; And,
Magnetoelasticity torque meter, it comprises magnetically elastic torque sensor, metering circuit and the second voltage table, described second voltage table is for testing the transient voltage value of described tested motor output end, and by described metering circuit by measured transient voltage value transmit to magnetically elastic torque sensor, described magnetically elastic torque sensor is by calculating the transient torque of described tested motor;
Data acquisition and analyser, it tests cabinet, described tested motor and described transient torque with described Comprehensive Control respectively and rotational speed detector is connected, when described tested motor starting, described Comprehensive Control test cabinet transmits transient current value and the transient voltage value of described tested motor input terminals to described data acquisition and analyser; Described electron temperature measures transient temperature during described tested motor starting, and transfers to described data acquisition and analyser by connecting circuit;
The transient voltage value of transient torque, transient rotative speed and output terminal in measured tested motor starting procedure is transferred to described data acquisition and analyser by described transient torque and rotational speed detector; The transient voltage value of transient torque, transient rotative speed and output terminal in the transient current value of the described tested motor input terminals received and transient voltage value and tested motor starting procedure is analyzed in conjunction with transient temperature during described tested motor starting by described data acquisition and analyser, whether normal to judge the starting process of described tested motor, and the energy consumption level of tested motor when different loads type can be recorded and judge whether the runnability of tested motor meets national standard;
Control desk, its one end is connected with described integration test switch board, the other end is connected with described transient torque and rotational speed detector, described control desk is for receiving the analysis result of described data acquisition and analyser transmission, and by the break-make of described integration test switch board control load observation circuit, with the whole test process of simple and direct efficient operation.
Although embodiment of the present invention are open as above, it is not restricted to listed in instructions and embodiment utilization.It can be applied to various applicable the field of the invention completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (7)
1. an on-line monitoring system for the dynamic perfromance in motor starting procedure, is characterized in that, comprising:
Power supply, it is AC power;
Pressure regulator, it is connected with power supply, is added to voltage swing on load monitoring circuit for controlling described power supply;
Integration test switch board, it is connected with described pressure regulator, and for receiving the output current of described pressure regulator, reometer and the first voltage table is also comprised in described integration test switch board, the transient current value of described reometer and the tested motor input terminals of examination and transient voltage value, described integration test switch board is also for the break-make of control load observation circuit simultaneously;
Tested motor, it is connected with described integration test cabinet, and for receiving the output current of described integration test switch board, described tested motor is also provided with electronic thermometer;
Transient torque and rotational speed detector, it is for receiving the output current of described tested motor, and described transient torque and rotational speed detector comprise:
Magnetoelectric tachometer, it is made up of speed probe and measuring appliance, described speed probe is connected with the rotating shaft of described tested motor, when the rotating shaft of tested motor rotates, drive described speed probe synchronous axial system, the voltage and current that described tested motor produces transfers to described measuring appliance through described speed probe, and described measuring appliance obtains the transient rotative speed of described tested motor by the magnitude of voltage that calculates and current value; And,
Magnetoelasticity torque meter, it comprises magnetically elastic torque sensor, metering circuit and the second voltage table, described second voltage table is for testing the transient voltage value of described tested motor output end, and by described metering circuit by measured transient voltage value transmit to magnetically elastic torque sensor, described magnetically elastic torque sensor is by calculating the transient torque of described tested motor;
Data acquisition and analyser, it tests cabinet, described tested motor and described transient torque with described Comprehensive Control respectively and rotational speed detector is connected, when described tested motor starting, described Comprehensive Control test cabinet transmits transient current value and the transient voltage value of described tested motor input terminals to described data acquisition and analyser; Described electron temperature measures transient temperature during described tested motor starting, and transfers to described data acquisition and analyser by connecting circuit; The transient voltage value of transient torque, transient rotative speed and output terminal in measured tested motor starting procedure is transferred to described data acquisition and analyser by described transient torque and rotational speed detector; Whether the transient voltage value of transient torque, transient rotative speed and output terminal in the transient current value of the described tested motor input terminals received and transient voltage value and tested motor starting procedure is analyzed in conjunction with transient temperature during described tested motor starting by described data acquisition and analyser, normal to judge the starting process of described tested motor;
Control desk, it is for receiving the analysis result of described data acquisition and analyser transmission, and by the break-make of described integration test switch board control load observation circuit.
2. the on-line monitoring system of the dynamic perfromance in motor starting procedure as claimed in claim 1, it is characterized in that, also comprise adjustable frequency motor, described transient torque and rotational speed detector are to described adjustable frequency motor output AC electricity frequency signal, the ac frequency signal adjustment rotating speed of described adjustable frequency motor by receiving, the back electromotive force produced to make described adjustable frequency motor is higher than the electromotive force of described power supply.
3. the on-line monitoring system of the dynamic perfromance in motor starting procedure as claimed in claim 2, it is characterized in that, also comprise frequency-conversion control cabinet, back electromotive force is transferred to described frequency-conversion control cabinet higher than the difference electromotive force of electromotive force of source by described adjustable frequency motor, and by described frequency-conversion control cabinet, this difference electromotive force is reverse into the alternating current with power supply same frequency, same phase, by power supply feedback grid to alternating current described in described power delivery.
4. the on-line monitoring system of the dynamic perfromance in motor starting procedure as claimed in claim 3, it is characterized in that, the described frequency-conversion control cabinet other end is connected with described adjustable frequency motor, when load monitoring circuit working, described frequency-conversion control cabinet reduces its rotating speed by the running frequency reducing described adjustable frequency motor.
5. the on-line monitoring system of the dynamic perfromance in motor starting procedure as claimed in claim 1, it is characterized in that, the voltage fluctuation of described power supply is no more than 10%.
6. the on-line monitoring system of the dynamic perfromance in motor starting procedure as claimed in claim 1, it is characterized in that, interlock is provided with in described integration test switch board, when short circuit appears in described load monitoring circuit, the connection that the interlock of described integration test switch board controls between described integration test switch board and described tested motor disconnects.
7. the on-line monitoring system of the dynamic perfromance in motor starting procedure as claimed in claim 1; it is characterized in that; when the temperature that described control desk receives described tested motor is higher than 60 degrees Celsius; temperature information is fed back to described integration test switch board by described control desk, described integration test switch board auto stop.
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| CN107831392B (en) * | 2017-11-29 | 2023-09-08 | 卡斯柯信号有限公司 | Full-electronic interlocking hardware intelligent test system |
| CN109946605A (en) * | 2019-04-02 | 2019-06-28 | 中交机电工程局有限公司 | The on-line monitoring system of dynamic characteristic in motor starting procedure |
| CN109946605B (en) * | 2019-04-02 | 2021-02-02 | 中交机电工程局有限公司 | On-line monitoring system for dynamic characteristics in starting process of motor |
| CN112152534A (en) * | 2020-10-20 | 2020-12-29 | 华中科技大学 | Synchronous motor transient torque measuring device and method based on static measurement |
| CN112152534B (en) * | 2020-10-20 | 2022-04-01 | 华中科技大学 | Synchronous motor transient torque measuring device and method based on static measurement |
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