Variable Speed Ac Motor Drive

Title:

YVFE3 VARIABLE FREQUENCY LV MOTOR

Brief Introduction

To judge "which is the most important" in the variable speed ac motor drive performance indicators, the core depends on the application scenario and load requirements of the motor-there is no absolute "first important" indicator, only the "most critical for a particular scenario" indicator.In different scenarios, the core requirements vary greatly, resulting in completely different performance indicators with the highest priority. The specific details can be analyzed and understood through typical scenarios. If it is a scenario that drives heavy-load start-up or low-speed operation, then torque is the most important indicator.The core requirement of this kind of scenario is to "be able to drive heavy loads to move". If the torque is insufficient, even if the motor power is large and the speed is high, the load cannot be started, and the motor will even stall and overheat and burn down due to "immobility".For example, a crane motor, the primary requirement is to output a sufficiently large torque at low speed to ensure that heavy objects can be hoisted smoothly, but the speed of the speed is not the key.

If it is a scenario that is sensitive to operating efficiency and energy consumption, then efficiency is the absolute core indicator.In such scenarios, variable speed ac motor drive usually need to run continuously for a long time, and small differences in efficiency will bring huge energy consumption and cost gaps: in the industrial field, motors account for about 40% of the world's total power consumption, and high-efficiency motors are 5%-10% more efficient than ordinary motors. A 11kW high-efficiency motor can save thousands of kWh of electricity a year; in new energy vehicles, for every 1% increase in the efficiency of the drive motor, the range may increase by 5-10 kilometers, which is essential to the user experience. At this time, even if the motor power and speed meet the requirements, if the efficiency is low, it will be eliminated. If it is a scene with extremely high requirements for speed accuracy and stability, then speed is the most important indicator.

The core requirement of this kind of scenario is "precise control of the rotation speed". If the rotation speed fluctuates too much, it will directly lead to acceleration. The size deviation of industrial parts, for example, leads to uneven thickness of textile fabrics, distortion of medical equipment testing data and other problems.

Main Technical Parameters

Applications

Cement

Chemistry

Pump

Water conservation

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