The low-speed and high-torque electric dynamometer represents the pinnacle of dynamic simulation testing for power loading (or reverse dragging), leveraging cutting-edge speed and torque control technology of four-quadrant AC asynchronous motors. This advanced equipment is widely employed in complete vehicle and parts test benches. Its outstanding loading performance seamlessly accommodates both low-speed, high-torque, and high-speed, high-power testing, ensuring comprehensive performance and durability assessments across the full spectrum of speed and power ranges.
Exceptional Features of the Low-Speed and High-Torque Electric Dynamometer:
This electric dynamometer offers both driving and reversing capabilities in constant speed mode.
The dynamometer excels in constant torque mode, enabling precise dynamometer loading.
When in the loading state, the energy produced by the electric dynamometer can either be fed back into the grid or dissipated via a chopper brake resistor.
Low-Speed, High-Torque Electric Dynamometers: No Cooling Water System Required.
Test Setup: Motor Under Test ----------- Torque Transducer -------- Electric Dynamometer
Test Configuration: Engine -------------- Torque Sensor -------- Electric Dynamometer
Configuration: Drive Motors ----------- Reducers --------- Torque Sensors ---------- Electric Dynamometers
Test Arrangement: Drive Motor ----------- Reducer --------- Accompanying Test Reducer ---------- Torque Sensor ---------- Low-Speed, High-Torque Electric Dynamometer
Technical Characteristics of the Low-Speed and High-Torque Electric Dynamometer:
1. Four-Quadrant Operation: Capable of providing both driving torque (electric operation) and resistance torque (power generation operation). Outstanding loading performance: maintaining constant torque loading from zero speed to rated speed, and constant power loading above rated speed.
2. Versatile System Loading/Driving Modes: Capable of constant torque, constant speed, zero speed, fixed parameter, and computer-controlled loading/driving. The system can input load spectrum for dynamic testing, simulating diverse conditions such as uphill/downhill, start/brake, and acceleration/deceleration.
3. Speed Regulation: Bidirectional, frequency conversion speed regulation with a dynamic response time of less than 8ms (dependent on the inertia of the test piece).
4. Torque Control: Utilizing torque vector frequency conversion control with a dynamic response time of less than 5ms.
5. System Operation: Offers manual and automatic program control modes, allowing seamless switching between various control modes without disturbance.
6. Digital Test Bench Operation Modes:
a. Automatic Speed Control
b. Automatic Torque Control
c. Program-Controlled Road Resistance Simulation: Includes road condition simulation, speed control, slope control, and torque control modes.
d. Speed/Torque Control Switching: The device allows smooth switching between the two control modes during dynamic operation, with a switching time of less than 1 second.
7. Overload Capacity: Capable of 150% over-torque for ≥10 minutes and 200% over-torque for ≥1 minute. At zero speed (0Hz), it can reach 200% of the rated torque, maintaining torque without attenuation even as speed decreases to zero.
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