Audited Supplier
on Line
1year
Eddy Current Testing Equipment
Digital
Changniu Technology
Automatic
Motor Testing Equipment
Spring Dynamometer
Quality Management
Bracket
Customized
0.5-0.2
45kg
0-120kw
0-20000nm
Changniu Technology
Dust Free + Wooden Box
customisable
Hangzhou, China
Product Description
| 70N.m high speed eddy current dynamometer for motor torque and power measurement |
High-speed eddy current dynamometer product introduction:
Applicable occasions of high-speed eddy current dynamometer: high-charged eddy current dynamometer is suitable for torque and power measurement of high-speed power machinery, especially suitable for simulation life test and temperature rise test of power machinery, such as compressor motors, new energy vehicle motors, air compressor motors, etc.
Applicable occasions of high-speed eddy current dynamometer: high-charged eddy current dynamometer is suitable for torque and power measurement of high-speed power machinery, especially suitable for simulation life test and temperature rise test of power machinery, such as compressor motors, new energy vehicle motors, air compressor motors, etc.
Principle of eddy current dynamometer:
The eddy current dynamometer is composed of an inductor (rotor), an armature and an excitation winding, torque, a speed sensor, a base plate, etc., and the inductor is mainly composed of a traveling part and a swing part (armature and excitation coil). The induction sub on the rotor shaft is shaped like a gear, and is coaxial with a DC excitation coil on the rotor. When the excitation coil is connected with a DC current, there is a magnetic field around it, and a closed magnetic flux is generated around the excitation group. It is evident that the inducer on the left side of the winding has one polarity and the right side has the opposite polarity.
When rotating, eddy currents are generated due to the periodic changes of the magnetic density value, and the magnetic field generated by this eddy current interacts with the magnetic field that produces it, thereby generating a braking torque that is opposite to the machine under test, which makes the armature swing and transmits the braking force to the measuring device through the force arm on the armature. A non-contact magnetoelectric speed sensor and a 60-tooth crankset mounted on the spindle are used for rotational speed measurement, which converts the rotational speed signal into an electrical signal output.
Dynamometer power calculation P = torque * speed / 9550 (Kw) in the formula torque - (Nm) n speed - (rpm/min).
Features of high-speed eddy current dynamometer:
1. Simple structure, stable operation, low price, easy to use and maintain
2. Water cooling, low noise and low vibration;
3. The input speed range is wide, which can be used for type testing of different motors and power machinery such as frequency conversion speed regulation
4. The controller adopts single-phase AC power supply, and the control power is small;
5. The device can also be used as a brake, and the braking torque is large.
