Industrial Doulbe Permanent Magnet Synchronous Motor (PMSM)
Variable Frequency Converter Drive Pm VSD Inverter Screw Air
Compressor Advantage 01 Features Of permanent Magnet
Variable Frequency Air CompressorUltra-low temperature rise design,
which allows the compressor running at ultra-low frequency for a
long time.Closed-loop vector control system for faster control and
more precise speed control.The compressor unit can still operate
efficiently when the frequency is reduced by more than 50%.The
pressure is stable and the pressure fluctuation is accurately
controlled within 0.1 bar.The figure shows a comparison of several
starting methods. It can be seen that the frequency converter is
slowly accelerated to start, the starting is more stable, and the
current peak is completely avoided. 02 Air EndMore stable, no
mechanical transmission failure: high-efficiency permanent magnet
synchronous motor and screw male rotor adopt embedded-integrated
shaft direct connection structure, no gear transmission, completely
eliminate gear pitting or broken teeth; Two independent permanent
magnet motors are integrated directly drive two air ends, no
coupling failures.More energy efficient, the air end is always
running at energy-saving speed.More efficient and efficient
permanent magnet motor + no transmission efficiency loss.More
comfortable, low running noise, eliminating three sources of noise:
no-click bearing noise, no gear meshing noise, no coupling drive
noise.More compact: The permanent magnet motor is small in size and
the integrated structure saves space.Under the set frequency
conversion pressure, the unit will automatically adjust to keep the
output pressure within ± 0.1 bar, reducing unnecessary waste (the
power consumption increases by 7% for every 1 bar of pressure
increase) 03 Advantages of Permanent Magnet Motors Compared
to General Asynchronous MotorsHigh efficiency: Eliminates
excitation system losses and improves efficiency.It is still
efficient under low load conditions: the energy efficiency of a
permanent magnet motor is more than 9% higher than that of a
conventional asynchronous motor at full load operation, and its
energy efficiency remains unchanged as the speed decreases.Large
overdrive torque: The ratio of the maximum starting torque of the
permanent magnet synchronous motor to the rated torque can be more
than 3 times, while the general asynchronous motor is only 1.6
times.The control is more stable: the corresponding time of the
permanent magnet motor is
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