PMVQ Permanent Magnet Variable Frequency Series Air Compressor
Difference Between Kaishan Permanent Magnet Variable Frequency Screw Air Compressor and Power Frequency Screw Air Compressor
No matter how high the energy efficiency of a power frequency screw air compressor is, its efficiency will decrease to varying degrees once it deviates from the rated working condition, making even energy-saving air compressors inefficient. Kaishan permanent magnet variable frequency technology can adjust the motor speed according to the change of air consumption, and then adjust the air displacement, so that the air compressor can maintain high efficiency under any air consumption condition. Therefore, compared with ordinary power frequency screw air compressors, when the system air consumption fluctuates, the permanent magnet variable frequency screw air compressor has obvious energy-saving advantages, and the greater the fluctuation, the more obvious the energy-saving effect, with a comprehensive energy saving of up to 50%.
Kaishan PMVQ Series New Product Upgrade Launch
Optimized in appearance and structural layout based on the PMVFQ series, the entire PMVQ series also adopts an integrated design of oil-cooled motor and main unit, minimizing energy loss to the lowest level. The main unit is designed with 9 imported SKF bearings, ensuring the stability of the main unit operation and a longer service life. The entire PMVQ series meets the GB/19153-2019 Level 1 energy efficiency standard, delivering excellent energy-saving performance and helping you reduce operational costs while complying with global energy efficiency requirements.
With patented weak magnetic control, pressure control and simple and stable open-loop control of permanent magnet motor, it can adapt to various harsh working conditions and make the system more stable. It does not need a rotor angle position sensor, which not only simplifies the system but also improves the stability of the system. Torque compensation can be performed at any angle within 360 degrees to achieve perfect torque control.
The bus voltage utilization rate is more than 93%, far exceeding that of ordinary frequency converters on the market. The advanced PID control algorithm is adopted to speed up the control speed and improve the control accuracy, providing customers with more stable air supply pressure. The constant power control technology makes full use of the motor power. When the set pressure is lower than the maximum pressure, the motor speed can be increased to obtain more air displacement.
Special rare earth permanent magnet materials are adopted, which have a wider adjustment range and higher efficiency. It adopts a fully enclosed structure design with a built-in oil cooling system (protection level IP65), featuring better reliability, higher efficiency, longer service life and lower noise. The heat resistance temperature is as high as 180°C, which is 50% higher than 120°C of similar domestic products, ensuring no demagnetization under any circumstances.
The realization of rare earth permanent magnetization ensures no slip, no electric excitation, and no fundamental wave iron-copper loss of the rotor. The motor does not need to draw excitation current from the power grid, and the power factor is close to 1. It has high speed regulation accuracy, with a speed regulation error of 1/30000, which greatly reduces the fluctuation of compressor discharge pressure.