How does the degree of compressor bypass opening affect the frequency of the compressor motor?
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How does the degree of compressor bypass opening affect the frequency of the compressor motor (with an inverter installed)?
What compressor? What is it used for? Which bypass? Be specific
Is a compressor that can accommodate an inverter a centrifugal compressor?
V-type reciprocating compressor, used for compressing associated gases in oil fields； Bypass refers to the bypass between intake and exhaust.
First, you need to figure out what the bypass is used for Bypassing of intake and exhaust air like this is generally used: 1) during startup, to prevent system pressure from affecting the compressor’s exhaust, that is, to avoid under-compression; 2) during shutdown, as the load continues to decrease, for the same reason – to prevent under-compression. 3. It is activated when the exhaust pressure is too high. This is the case with the screw refrigeration systems I have worked with; it has nothing to do with variable frequency, but rather relates to the load, startup and shutdown processes, and system pressure
The compressors in our facility are reciprocating compressors, with the frequency converters installed in the power distribution cabinet; currently, the frequency has to be adjusted manually
What prevents system pressure from affecting the compressor exhaust during startup? What does undercompression mean?
In the case of a reciprocating machine, increasing the bypass flow raises the load on the unit; as the load increases, the frequency of the inverter goes up.
More work is done, so the frequency increases accordingly