YVF3 Series Variable Frequency Three Phase AC Asynchronous Induction Electric Motor

YVF3 series variable frequency 3 phase induction motor is based on YE3 motor. According to the design characteristics of variable frequency motor, appropriate insulation structure, mechanical structure and electromagnetic scheme are made derived from adjustment.

YVF3 series motor adopts high-strength cast iron structure, which has the characteristics of high reliability, wide speed regulation range and high precision. It is equipped with an independent cooling fan to ensure that the motor has a good cooling effect at different speeds.

The main structure, performance index, appearance, installation size, etc. of this series of motors are basically the same as those of YE3, so as to facilitate interchangeability.

As an important product in the field of motor system energy saving, the low-voltage and high-power variable frequency speed regulation three-phase asynchronous motor has the advantages of safety, reliability, long life and excellent performance.

The characteristics of YVF3 variable frequency motor

YVF3 variable frequency motor can change the speed according to the load adjustment frequency. In low voltage places, the frequency of YVF3 variable frequency motor can be reduced, so that the motor can start reliably. In light load places, the YVF3 variable frequency motor can be used to reduce the frequency, reduce the speed and current, and save energy. YVF3 variable frequency motor can change the frequency of the motor according to the work requirements to meet the required speed requirements. Of course, some working conditions also need to add a forced cooling fan to ensure the cooling of the motor at low frequency and low speed for a long time, and to prevent the motor from burning out due to excessive temperature rise.

YVF3 variable frequency motor can be continuously variable speed.

Infinite speed adjustment is from stop to maximum speed, or from maximum speed to stop, without gears, it gradually becomes faster or slower. In addition, the full DC variable frequency motor can control the motor speed and actual demand by dividing the motor speed gear into multiple gears through the inverter. However, the maximum number of gears for AC brushed motors is only 3. Wind speed adjustment cannot achieve the effect of frequency conversion.

The harmonic electromagnetic noise and vibration of YVF3 variable frequency motor are small.

The vibration and noise of ordinary asynchronous motors due to electromagnetic, mechanical, ventilation and other factors have become more complicated. Each time the harmonics contained in the variable frequency power supply will interfere with the inherent spatial harmonics of the electromagnetic part of the motor, thereby forming various electromagnetic exciting forces. When the frequency of the electromagnetic force wave is equal to or close to the natural vibration frequency of the motor body, resonance will occur, thereby increasing noise. Because the motor has a wide operating frequency range and a large range of speed changes, it is difficult for the frequency of various electromagnetic force waves to avoid the natural vibration frequency of each component of the motor. However, the YVF3 variable frequency motor can effectively solve these problems. YVF3 variable frequency motor can cope with frequent starting and braking. The variable frequency motor can solve the efficiency, temperature rise, insulation strength, noise, vibration and cooling problems of ordinary asynchronous motors. Frequent starting and braking will bring fatigue and accelerated aging to the mechanical structure and insulation structure. , Can also effectively reduce the instantaneous voltage when the motor starts.

YVF3 variable frequency motor has a long service life.

When the motor is running, the carrier frequency is about several thousand to ten thousand Hz, which makes the stator winding of the motor withstand a high rate of voltage rise, which is equivalent to the steep impulse voltage applied by the motor, which makes the motor’s turn insulation Withstand a more severe test. However, the YVF3 variable frequency motor can work under rectified and filtered voltage, with more stable performance and longer service life.

YVF3 variable frequency motor saves more energy.

All household appliances produce harmonic voltage and current to varying degrees during the operation of the motor, so that the motor runs under non-sinusoidal voltage and current. High-order harmonics will lead to the increase of rotor copper loss, iron loss and additional motor stator loss, the most significant of which is the team copper loss. Because the ordinary AC asynchronous motor rotates at a synchronous speed close to the fundamental frequency, the high-order harmonic voltage will cut off the rotor bar with a large slip rate, resulting in large rotor loss. In addition, the extra copper consumption caused by the skin effect should also be considered. These losses apply to the additional heating of the motor, thereby reducing efficiency and output power. However, if the YVF3 variable frequency motor is used, its energy consumption can be reduced by about 20%-30%.