Mode motor rotation speed control

Post by: Admin Dept: BBT Nôi dung máy nén khí Date posted: 08/06/2016

This is a method of scientific control using a variable
frequency controls the rotational speed of the compressors with power saving purposes.
The following parameters are known based on the performance characteristics of the
compressor.
Q1 / Q2 = n1 / n2
H1 / H2 = (n1 / n2) 2
P1 / P2 = (n1 / n2) 3
here:
Q: What is the flow of air supplied to the pipeline by air compressor .
H: the pressure pipeline system capacity
P: power consumption of the motor
n: rotational speed of the compressors
It can be seen from the above expression, when the motor rotation speed decreased
80% compared to the rotational speed of norms, supply air flow system
by pipeline compressors also fell 80%, to reduce pipeline pressure
(80%) 2 and the power consumption of the motor decrease (80%) 3, ie 51.2 %.
excluding the iron loss and loss of motor co bulbs save electricity, the efficiency
reaches 40%. This is the principle of power-saving method by changing
the frequency.
This has been proved by the fact for a long time, the application
inverter used in gas supply systems and use technology to change the frequency
of change the rotational speed of compressors to adjust flow to replace
the valve can be achieved using effective in saving power.
normally, electricity savings of more than 30%. In addition, functional boot
features soft and smooth speed adjustment of the inverter can perform
flow control and reduce vibration stability startup longevity
for the entire plant and pipeline.

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