Energy Efficient Industrial Screw Compressor With Direct Drive
Permanent magnetic motor
- Reasonable structure and high power density
- Very small rotator inertia and very fast response speed
- Ultrahigh intrinsic coercive rare earth permanent magnetic material
with strong anti demagnetizing capacity
- Possible constant torque output within scope of locked rotator and
rated rotating speed
- Special asymmetrical magnetic circuit design, making
low-rotating-speed torque ripple small
- High balancing precision, stable and high-speed operation, low
noise and small vibration
- Full-sealed or high protection-grade appearance structural design
Highly efficient magnetic steel of permanent magnetic motor
Punching uses high-performance low-loss silicon, we conduct
simulation analysis of mechanical strength with finite element
method so as to make rotator inertia reach the minimum on the
condition that enough mechanical rigidity and mechanical strength.
Rotator magnetic steel adopts high-performance NdFeB permanent
magnetic material to form sine wave air-gap field.
Axial flow uses the processing method of embedded bond, which
simultaneously meets requirements of optical axis and bond axis.
It tracks system gas volume changes automatically, and adjusts the
revolving speed of compressor accurately with the use of PID
(proportional, differential, integral), to keep the system pressure
Start without stamping
- The variable frequency starting method reduces the impact of the
start of the compressor on the power grid and mechanical parts
greatly, thus extending the life of the machine.
- Eliminate invalid transitional period from full-load power to
- Avoid excessive no-load power consumption
- Maintain the net pressure section
- Reduce the overall average operating pressure
- System pressure is low, making the system leak declined to a
- It accelerates with the use of soft-start motor gradually, to
improve flexibility, thus avoiding the surge
Similarly, for two models with above rated power 37kw, when load
rate is only 605, input power of power-frequency model under
ordinary air inflow throttling control is 39.2kw; while shaft power of permanent magnetic power-frequency motor is
23.6kw with electricity saving ratio being 37.5%. If we calculate
according to 40,000 operating hours per year, annual electric
charge of ordinary asynchronous power-frequency model is RMB
107,200, however, annual electric charge of permanent magnetic
synchronous servo model is RMB 65,800, saving RMB 41,400 in each
Industrial Screw Compressor Parameters
1. Before quoting, what should users offer?
1). Discharge pressure (Bar, Mpa or Psi)
2). Air discharge/Air flow/Air capacity (m3/min or CFM)
3). Power supply (220/380V, 50/60Hz, 3Phase)
2. If I don't know the pressure and air flow, what should I do?
1). Take the picture of nameplate, we will advise the suitable air
compressor to you.
2).T ell us what industry you are, we can advise the suitable one
(so as to air tank / air dryer / air filters).