Two-Stage Rotary Screw Air Compressor

Advantages of the Permanent Magnet Variable Frequency (PM VSD) Air Compressor

1. Features of the Permanent Magnet Variable Frequency Air Compressor:

• Ultra-low heat generation design, allowing the compressor to operate at an extremely low frequency for prolonged periods.

• Closed-loop vector control system, ensuring faster response and more precise speed regulation.

• Efficient operation even when frequency is reduced by more than 50%.

• Stable pressure control, with fluctuations precisely maintained within ±0.1 bar.

2. Compression Unit:

- Enhanced stability with zero mechanical transmission errors: The high-efficiency permanent magnet synchronous motor and male screw rotor utilize an integrated direct-drive shaft structure, eliminating gear transmission and preventing issues such as pitting or gear tooth breakage.

- Dual independent permanent magnet motors directly drive the two air-end compression stages, ensuring error-free coupling.

- Superior energy efficiency, with the compression unit always operating at an optimal energy-saving speed.

- Higher operational efficiency, eliminating drive transmission losses.

- Lower noise levels, eliminating three primary noise sources:

• Silent bearings

• No gear meshing noise

• No coupling transmission noise

- Compact design, with a small-size permanent magnet motor and integrated structure, optimizing space utilization.

- Smart frequency conversion pressure control, automatically maintaining output pressure within ±0.1 bar, minimizing unnecessary energy waste (every 1-bar increase in pressure results in a 7% rise in power consumption).

3. Advantages of Permanent Magnet Motors Over Conventional Asynchronous Motors:

• Higher efficiency, eliminating excitation system losses and improving overall performance.

• Energy efficiency remains high even under low-load conditions: The permanent magnet motor achieves 9% greater energy efficiency than conventional asynchronous motors at full load and maintains consistent efficiency at lower speeds.

• Exceptional overload torque capacity: The peak starting torque-to-rated torque ratio of a permanent magnet synchronous motor is over three times greater than that of a conventional asynchronous motor (which is typically 1.6 times).

• More stable control, with a motor response time of less than 50ms, ensuring instantaneous adjustments for highly stable air pressure.

4. Stainless Steel Piping System:

• Streamlined and aesthetically optimized layout.

• Corrosion-resistant stainless steel piping, effectively preventing rust accumulation and eliminating safety hazards caused by pipeline leaks.

5. Advanced Technology & Enhanced Inverter Performance:

• Equipped with a high-frequency reactor, reducing high-frequency interference generated by the inverter.

• Soft-start inverter technology, minimizing peak startup current for smoother operation and significantly reducing power costs.

• Forced cooling system for the inverter, preventing shutdown due to high temperatures during summer months.

• Standardized dust filtration system, with circuit board surface coating treatment, ensuring high efficiency and durability against dust and moisture.

• Specialized heat dissipation design for the inverter, guaranteeing stable operation in high-temperature environments.

• No idle operation under any load conditions, achieving optimal energy savings.

• Real-time pressure monitoring, maintaining fluctuations within ±0.1 bar, ensuring precise air supply and energy optimization.

6. Oil Filtration System:

Imported high-quality filters, reliably removing contaminants from lubricating oil to maintain a smooth and efficient oil circulation system, with filtration accuracy of 0.1 micron.

7. Air Filtration System:

• Premium imported air filters, effectively removing dust and airborne particles.

• Filtration precision up to 99.99%, controlling airborne particle size below 0.3 microns.