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Application Of Frequency Converter
- Jan 11, 2019 -

Application of frequency converter

In the era when the inverter technology is still not mature, the fans and pumps on high-performance applications are mostly variable-speed multi-speed three-phase asynchronous motors. However, due to the step-level speed regulation, it is impossible to adjust the wide range of smooth speeds. Not performance optimization. Nowadays, the application of frequency converter is very common. The frequency conversion motor specially used for the load of fan and water pump is designed and optimized, and the electrical performance such as efficiency and power factor of the whole speed regulation range can be maintained at a high level.

Fans, pumps, etc. load or output regulation triple jump

● Traditional adjustment methods. By adjusting the baffle and valve opening of the inlet or outlet to adjust the amount of air supply and water supply, the input power is large, and a large amount of energy is consumed in the interception process of the baffle and the valve.

● Variable-speed multi-speed three-phase asynchronous motor has step-by-step speed regulation. At full load operation, the variable-pole multi-speed three-phase asynchronous motor runs at high speed; the air volume or water supply needs to be adjusted hourly, the motor is switched to medium or low speed operation, and the input power is greatly reduced, achieving extremely significant energy saving effect.

● Variable frequency speed regulation three-phase asynchronous motor stepless speed regulation. When using variable frequency speed regulation, if the flow demand is reduced, the speed can be met by reducing the speed of the pump or fan. Usually, the dedicated variable frequency motor of this application has an optimized performance index within a wide speed range, and the ratio "flow/energy consumption" is always maintained at a high level.

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