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Product Description
High speed and low power dynamometer System Solution
High speed and low power dynamometer System- Model Selection of High Speed Dynamometer
Generally, The S1 working curve of dynamometer is selected according to the peak curve of the tested motor. The overload capacity of dynamometers is generally measured by S6 (40%) as the overload curve of dynamometers.
Parameter table of air-cooled dynamometer: | Type | Tr(N.m) | Pr(kW) | nr(rpm) | n2(rpm) | nmax(rpm) | Pmax(kW)@nmax | Accuracy class |
| LD-AF1 | 3.6 | 4.5 | 12000 | 15000 | 24000 | 2 | 0.1%FS |
| LD-AF2 | 5.1 | 7.0 | 13000 | 19000 | 24000 | 4 | 0.1%FS |
| LD-AF3 | 14 | 7.5 | 3600 | 20000 | 20000 | 6 | 0.1%FS |
| |
| LD-BF1 | 37 | 14 | 3600 | 18000 | 18000 | 14.0 | 0.05%FS |
| LD-BF2 | 49 | 30.5 | 6000 | 9500 | 15000 | 24.0 | 0.05%FS |
| |
| LD-CF2 | 73 | 100 | 8185 | 13000 | 20000 | 100 | 0.05%FS |
| |
| LD-DF1 | 150 | 100 | 6366 | 12000 | 12000 | 100 | 0.05%FS |
| LD-DF3 | 210 | 132 | 6000 | 16500 | 16500 | 132 | 0.05%FS |
| Type | Tr(N.m) | Pr(kW) | nr(rpm) | n2(rpm) | nmax(rpm) | Pmax(kW)@nmax | Accuracy class |
| LD-AW1 | 0.76 | 6 | 75000 | 75000 | 75000 | 6 | 0.1%FS |
| LD-AW2 | 1.95 | 6 | 29400 | 40000 | 40000 | 6 | 0.1%FS |
| LD-AW3 | 1.97 | 10.5 | 51000 | 60000 | 60000 | 10.5 | 0.1%FS |
| LD-AW4 | 3 | 2.8 | 9000 | 15000 | 24000 | 2 | 0.1%FS |
| LD-AW5 | 3.5 | 11 | 30000 | 42000 | 50000 | 9 | 0.1%FS |
| LD-AW6 | 4.2 | 13 | 30000 | 30000 | 30000 | 13 | 0.1%FS |
| LD-AW7 | 8 | 8.4 | 10000 | 24000 | 24000 | 8.4 | 0.1%FS |
| LD-AW8 | 6.36 | 20 | 30000 | 30000 | 30000 | 20 | 0.1%FS |
| LD-AW9 | 10.2 | 32 | 30000 | 50000 | 50000 | 10.2 | 0.1%FS |
| |
| LD-BW1 | 20 | 12.1 | 5777 | 13000 | 24000 | 5 | 0.05%FS |
| LD-BW2 | 30.7 | 20 | 6215 | 24000 | 24000 | 9.0 | 0.05%FS |
| LD-BW3 | 35 | 22 | 6000 | 20000 | 20000 | 22 | 0.05%FS |
| |
| LD-CW1 | 50.8 | 25 | 4700 | 18000 | 18000 | 25 | 0.05%FS |
| LD-CW2 | 58 | 63 | 10400 | 24000 | 24000 | 63 | 0.05%FS |
| LD-CW3 | 67.8 | 29 | 4083 | 16000 | 16000 | 29 | 0.05%FS |
| LD-CW4 | 95.5 | 30 | 3000 | 10000 | 10000 | 30 | 0.05%FS |
| |
| LD-DW1 | 115 | 32 | 2650 | 5800 | 15000 | 10 | 0.05%FS |
| LD-DW2 | 131.8 | 34 | 2500 | 12000 | 12000 | 34 | 0.05%FS |
| LD-DW3 | 120 | 94 | 7500 | 18000 | 18000 | 94 | 0.05%FS |
| Tested motor parameters |
| Customer | |
| Rated power(kW)(S1) | | Rated torque(N.m)(S1) | |
Maximum rotation speed
(rpm)(S1) | | Maximum rotation speed @ max torque(N.m)(S1) | |
| Maximum voltage (V) | | Maximum current (A) | |
| Auxiliary system |
Battery simulator
DC Power | Output Voltage range(V) | |
| Output Current range(A) | |
| Power analyzer | Voltage measurement range(V) | |
| Current measurement range(A) | |
| Measurement accuracy | |
| Number of channels | |
| Cooling system | Cooling medium type | |
| Temperature control range(ºC) | |
| Temperature control accuracy | |
| Cooling power(kW) | |
| Climate chamber | Temperature control range(ºC) | |
| Humidity control range(%) | |
| Average heating rate(ºC/min) | |
| Average cooling rate(ºC/min) | |
| Volume(L*W*H)(m3) | |
| Installation of tested motor |
| Axle Diameter Range of tested motor(mm) | |
| L-type mounting bracket | Length * width(mm) | |
| Positioning circle diameter(mm) | |
| Outside Size of Motor(mm) | |
| Motor weight(kg) | |
| Special Requirements for Motor Installation | |
| Laboratory status |
| Laboratory space size(L*W*H)(m) | |
| Laboratory Foundation load-bearing capacity (kg) | |
| Laboratory Transportation Door Size(W*H)(m) | |
| Environmental temperature range in laboratory(ºC) | |
- Main test items
- Load characteristic test: measure the characteristics of the test motor under different loads. The measured data include:
- Torque
- Speed
- Current
- Voltage
- Power
- Map efficiency diagram
- Power factor
- Temperature
- Motor response characteristic test(optional)
- Harmonic analysis(optional)
- No load test, disconnect the dynamometer coupling, and the measurement data include:
- Current
- Voltage
- Speed
- Locked rotor test, dynamometer shaft locked rotor, measurement data include::
- Locked current
- Locked torque
- Locked voltage
- Back EMF constant and waveform
- Electromechanical time constant
- Measurement control accuracy
- Torque measurement control accuracy:±0.05%FS/±0.1%FS
- Speed sensor pulse resolution:max 2048ppr
- Torque control accuracy:±0.5%FS~±1%FS
- Steady state speed control accuracy:±1rpm(≤10000rpm),±0.1%FS(>10000rpm)
- DAQ sampling rate:1kHz
- User data acquisition system channel: optional
- Temperature sensor measuring range:-50ºC~200ºC
4. System Framework
The test bench is composed of high dynamic electric dynamometer, four quadrant feedback driver, high-precision torque measurement system, electric parameter tester, power analyzer, test piece power supply, data acquisition system, mechanical bench, test piece tooling fixture, monitoring software, etc.5. Mechanical System Brief Description
The mechanical system of high-speed motor test system consists of mechanical bench base, dynamometer installation base, high-speed coupling, high-speed bearing support, locked rotor mechanism, test motor installation tooling, protective device and other parts.According to the different specifications of dynamometer and the installation type of tested parts, different types of mechanical bench and installation fixture can be provided.
6. Measurement and control system
The measurement and control system consists of monitoring system, data acquisition system, sensor measurement system, frequency converter control system, test-bed auxiliary equipment control system, safety monitoring system, etc. The measurement and control system adopts real-time bus as the main communication network and CAN bus for communication with the controller of the test motor (other communication modes can be selected).The monitoring system communicates with the data acquisition system and the frequency converter control system controls the dynamometer dynamically in real time by Ethercat, collects the data of each sensor at high speed, analyzes and processes it. The monitoring system communicates with each auxiliary test system (such as cooling system, power supply, etc.), controls the auxiliary test system, and collects the sensor data of each safety monitoring at high speed, such as motor temperature, bearing temperature, coolant temperature, cooling pressure, etc.; The system sends an emergency stop command, and cuts off the power supply of the corresponding system to ensure the safety of the system.The data monitoring system is responsible for the data acquisition of each sensor, including the acquisition, processing, storage and display of torque, speed, pressure, temperature and other signals; At the same time, it can communicate with the main control system. If the monitoring system monitors abnormal data, it shall notify the main control system in real time and take corresponding treatment measures.Vibration sensors are installed on the dynamometer and the installation tooling of the tested motor, which can monitor the vibration state of the system in real time.6.1 Dynamometer
Using four quadrant electric energy feedback control driver, the dynamometer can be controlled in four quadrants, which can be controlled in either driving mode or load mode. As a load mode control, the generated electric energy can be fed back to the power grid, and the power quality fed back to the power grid meets the requirements of international standards. The four quadrant driver communicates with the host computer through bus or Ethernet to realize the real-time dynamic and accurate control of the driver. The upper computer monitoring system can realize the closed-loop control of motor speed and torque.6.2 Power supply
We can provide programmable power supply for the tested motor. The power output mode is divided into constant voltage (CV) mode, constant current (CC) mode and constant power (CP) mode. The output mode depends on the set values of output voltage, current and power and the size of load resistance.
The power parameters can be configured according to the needs of customers. One way or feedback power supply can be selected, and braking resistance can also be configured to consume the electric energy generated by the tested product when generating power.
6.3 Power analyzer
The electric parameter measurement system adopts high-precision power analyzer and current transformer, which can synchronously access torque and speed signals to measure the efficiency, current, voltage and other parameters of motor and controller. The power analyzer adopts Yokogawa or ZLG power analyzer.| Model | PA2000mini | PA5000H | PA6000H | WT300E | WT1804E | WT5000 |
| Number of input Channels | 1-4 | 1-7 | 1-7 | 1/2/3 | 1-6 | 1-7 |
| Basic Power Accurancy(60Hz) | 0.05% of reading+0.05% of range | 0.05% of reading+0.05% of range | 0.01% of reading+0.01% of range | 0.1% of reading+0.05% of range | 0.05% of reading+0.05% of range | 0.01% of reading+0.02% of range |
| Bandwidth | DC,0.1Hz to 500kHz | DC,0.1Hz to 5MHz | DC,0.1Hz to 2MHz | DC,0.1Hz to 100kHz | DC,0.1Hz to 1MHz | DC to 1MHz |
6.4 DAQ System
The data acquisition system is carried in the real-time controller and has the functions of analog quantity, digital quantity and high-speed counting. These high-speed I / O modules also participate in the control of the real-time controller.
The data acquisition system includes the user's field data acquisition system and the test-bed body data acquisition system. The data acquisition system used by the user on site adopts the field data acquisition box mode and uploads the data to the upper computer through the real-time bus. The data acquisition system of the test-bed body is used to monitor the data of the fixed sensors of the test-bed, such as the oil temperature, oil pressure, torque speed and other signals of the gearbox.
The configuration of the data acquisition system of the test-bed body is as follows:- Analog input channel: 12 channels, 16bit
- Digital channel: 32 channel Dio
- Temperature sensor measurement channel: 32 channels, 16bit
- High speed counting channel: 2 channels, 30MHz
- Communication mode: real-time bus
- DAQ Sampling rate: 1ksps
6.5 Security
In order to protect the safety of personnel and equipment during the operation of the bench, the test bench system adopts the following measures to ensure the safety of the system:
1) A closing detection sensor is installed on the protective cover of the high-speed rotating part to detect whether the protective cover is closed in place;
2) The electrical system has the protection functions of leakage, short circuit and power failure;
3) A fault warning light shall be installed near the test bench and operation bench, and a red emergency stop button that cannot be reset shall be installed.
4) If the monitoring data of torque, rotating speed, pressure, temperature, vibration and other sensors are abnormal, the system will automatically alarm and then make an emergency stop;
5) In case of emergency, you can manually press the emergency stop button on the control cabinet panel to quickly stop the motor. The control cabinet is equipped with working and alarm display devices. When the system alarms, it will send out buzzer and red flashing light; When the system operates normally, it will emit green light;
6) In order to prevent the loss of test data caused by sudden power failure of the power grid, UPS power supply is used as the backup power supply in the control system, which can temporarily supply power to the industrial computer after power failure, and the test personnel can save the test data in time. 7. Software
The main functional modules of the software include: system control module, data acquisition module, data recording module, data display module, communication module, data playback module, print processing module, sensor calibration module, function setting module, help document module.The main control system of the test bench is mainly used to control the actuator of the test bench, including dynamometer, cooling system, DC power supply, etc. The dynamometer can adopt torque and speed control modes. The control interface of the test-bed displays the torque and speed of the dynamometer, various electrical parameters, vibration signal, temperature signal, efficiency and so on in real time. Through the control interface, the functions of emergency braking and test time control of the motor can also be realized. The test control interface does not display other monitoring data. Most of the monitoring data is displayed on the display interface of the data monitoring computer.
Address:
Anhui Province, Hefei City, High-Tech Zone, 15 Tianhuroad, Hefei, Anhui, China
Business Type:
Manufacturer/Factory
Business Range:
Electrical & Electronics, Industrial Equipment & Components
Company Introduction:
Anhui Jingke Testing Technology Co., Ltd. is located in the science and Technology Park of Anhui National University. The company has established a long-term cooperative partnership with famous universities such as Zhejiang University and Hefei University of technology and well-known research institutes in the field of aerospace. It is engaged in the development and production of high-tech products in the fields of electromechanical integration, testing and control technology, digital simulation analysis and structural optimization.
The staff of Anhui Jingke Testing Technology Co., Ltd. is composed of three parts: The first part is a scientific research team composed of senior engineers, mainly responsible for the research of theory and methods, the formulation and review of plans; The second part is the engineering and technical personnel team composed of professional mechanical design engineers, mechanical process engineers, electrical engineers, CAE analysis engineers, software engineers, sales engineers and after-sales service engineers; The third part is composed of the production personnel of the processing base. Anhui Jingke Testing Technology Co., Ltd. is a truly integrated unit of production, learning and research, with strong innovation, development, production and after-sales service capabilities. The company has a special manufacturing and processing base and after-sales service team, which can provide a strong guarantee for the timely and high-quality completion of the contract project and the subsequent timely and excellent after-sales service.
Our goal is to continuously innovate and create the best social, economic and environmental benefits through leading technology solutions. We will adhere to the work philosophy of hard work, adhere to the customer-oriented, and continue to create the maximum value for customers.
Our core technologies include: High-speed and high dynamic transmission system design technology, actual working condition dynamic simulation technology, high dynamic motor closed-loop control technology, vibration and noise simulation analysis technology, digital simulation analysis technology, customized test system solution, high-pressure and large flow hydraulic system design technology, EMC / EMI shielding technology.
Our company is mainly engaged in non-standard testing and testing bench for power system, hydraulic system, transmission system and other testing systems. The main users are various automobile main engine plants and main supporting plants, military enterprises, aerospace enterprises, scientific research institutes and universities.
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