What are the advantages of an eddy current dynamometer?

　　Electric Eddy Current DynamometerIt is increasingly used in the automotive testing industry, utilizing the principle of eddy current loss to absorb power. Due to its simple structure, stable operation, and low cost, it is favored by many. Here, I will discuss the advantages of the electric eddy current dynamometer. I hope it can be of good help to you.

　　The electric eddy current dynamometer has advantages such as simple structure, stable operation, low cost, and easy maintenance. It features water cooling, low noise, and low vibration; in fact, this electric eddy current dynamometer consists of an eddy current dynamometer, with the induction part mainly composed of a rotating part and a swinging part (armature and excitation coil). The induction on the rotor shaft is gear-shaped, allowing the direct current excitation coil and the eddy current dynamometer to be coaxially installed with the rotor. Additionally, when the electric eddy current dynamometer passes through the coaxial excitation coil, the device generates magnetic flux, and the excitation coil forms a closed loop through the eddy current ring, air gap, and rotor. Since the rotor and swinging part are made of magnetic materials with low magnetic resistance, the magnetic flux density mainly depends on the size of the air gap. There are uniform teeth on the outside. When the magnetic induction at any point in the air gap and the inner surface of the armature or eddy current ring changes, a magnetic field is generated, inducing eddy currents. This heat is continuously carried away by the cooling water entering the cooling slots of the armature's inner surface or the eddy current ring. To ensure that the dynamometer can operate normally for a long time and to prevent scaling in the cooling chamber from affecting the cooling effect and damaging the dynamometer, the purification of the cooling water is very important.

　　The electric eddy current dynamometer has a wide input speed range and can be used for various types of variable frequency speed-regulating motors and dynamic mechanical tests. It uses a single-phase AC power supply, controlling low power; in fact, it also measures torque during operation. The measurement accuracy of electronic scales, pressure sensors, or high-precision torque and speed meters can be used in different situations. It can also use braking and braking torque. In addition to what we have mentioned, it can be used in environments where the ambient temperature does not exceed 40°C and the altitude does not exceed 1000 meters, or in environments where the ambient temperature is 30°C and the relative humidity does not exceed 85%. These are the advantages of the eddy current dynamometer. The electric eddy current dynamometer can also be used as a brake. The braking torque is large, and the operating environment is relatively high. The ambient temperature does not exceed 40°C, and the altitude does not exceed 1000 meters. When the ambient temperature is 30°C, the relative humidity does not exceed 85%. During use, when the internal coil of the hysteresis dynamometer passes through current, the electric eddy current dynamometer generates magnetic lines and forms a magnetic circuit to produce torque. Changing the excitation current can alter the hysteresis torque of the dynamometer, achieving the purpose of controlling the load torque and completing the load characteristic test. The dynamometer is also referred to as a dynamometer. Currently, this device is mainly used to detect the input voltage, current, power factor, frequency, input power, and other aspects of the motor.

　　The above article content describes the advantages of using the electric eddy current dynamometer, and it also shares a relatively good manufacturer of electric eddy current dynamometers. If you have such needs, you can check it out, and I hope it can be of help to you.