来源：http://www.jnmcd.com 发布时间：2019-05-31 浏览：次
1. Frequency conversion motor is more energy-saving
The household appliances in the motor work, have different levels of harmonic voltage and current, so that the motor works under non-sinusoidal voltage and current. The higher harmonics will cause the increase of copper loss of stator, rotor, iron loss and additional loss of motor, which is obviously the copper loss of team. Because the common AC asynchronous motor rotates at the synchronous speed corresponding to the fundamental frequency, the high-order harmonic voltage cuts the rotor guide bar with a large slip, which will cause a large rotor loss. In addition, additional copper consumption due to skin effect needs to be considered. These losses will be suitable for motor rated heating, power drop, output power reduction, but assuming the use of frequency conversion motor, its energy consumption can be reduced by about 20% - 30%.
2. The Harmonic Electromagnetic Noise and Jitter of Frequency Converter Motor are Less
The vibration and noise caused by electromagnetic, mechanical, ventilation and other factors of ordinary asynchronous motors become more and more complex. Various time harmonics contained in the variable frequency power supply and the inherent space harmonics of the electromagnetic part of the motor interact with each other, forming various electromagnetic exciting forces. When the frequency of electromagnetic force wave and the inherent vibration frequency of the motor block are close together, the resonance phenomenon will occur, and then the noise will be increased. Due to the wide frequency planning and large speed change planning of the motor, it is difficult to avoid the inherent dithering frequency of various components of the motor. But variable frequency motors can be useful in dealing with these problems.
3. Frequency conversion motor can respond to frequency initiation and braking
Frequency conversion motors can deal with the power, temperature rise, insulation strength, noise and shaking and cooling of ordinary asynchronous motors, as well as the weariness and aging of mechanical and insulation structures caused by frequency initiation and braking. They can also be used to drop the instantaneous voltage of the motor when it is starting. Variable-frequency motor can be continuously variable speed stepless speed regulation is from continuous to * fast, or from * fast to continuous, no gear, is gradually faster or slower. Other full direct current frequency converters can divide the motor speed gear into many gears through the converter to control the motor speed and theoretical requirements, while the * multi-gears of AC brush motors can not achieve the effect of frequency conversion as long as three gears of wind speed scheduling.
4. Longer life of AC variable frequency motor
When the motor works, the carrier frequency is about thousands to tens of kilohertz, which makes the stator winding of the motor accept a high voltage rise rate, which is equivalent to the impact voltage applied by the motor with a large steepness, so that the inter-turn insulation of the motor can be tested more severely, while the frequency conversion motor can operate under the voltage filtered by rectifier, and its performance can be more stable, and its life is longer. 。
5. Variable-frequency motor with infinitely variable speed
Poleless speed regulation is from continuous to * fast speed, or from * fast to continuous, no gear, is gradually becoming faster or slower, other full DC frequency conversion motor can be divided into many gears through the frequency converter to control the motor speed and theoretical requirements, and AC brush motor * multi-gears as long as three-speed wind speed scheduling can not complete the effect of frequency conversion.
With the summary of Shandong automatic door motor, I hope it will be helpful to our customers. If you don't understand or ask for help, please click on our official website: http://www.jnmcd.com or call for consultation. We will try our best to solve it for you.
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