Reciprocating Air Compressor VFD Variable Frequency Drive 3 Phase

KY900E Series V/F Control Air Compressor Dedicated Variable Frequency Drive

V/F Control Air Compressor Dedicated Drive with Variable Frequency Drive is a specialized drive device for air compressors that combines V/F control technology and variable frequency drive technology. It can adjust the motor speed according to actual needs, achieving energy-saving, efficient, and stable operation.

Voltage/Frequency Control is the most fundamental control method for frequency converters, which adjusts the ratio of output voltage to frequency (V/F curve) to control the motor speed.

Characteristic

• Simple and reliable: The control logic is simple, suitable for situations where speed regulation accuracy is not required.
• Lower cost: Compared to vector control or direct torque control, V/F control frequency converters are more affordable in price.
• Widely applicable: Suitable for constant torque or square torque loads such as fans, water pumps, air compressors, etc.

Technical characteristics

Based on the operating characteristics of air compressors, V/F control dedicated variable frequency drives typically have the following functions:

• Constant pressure gas supply control: Real time monitoring of compressed air pressure through pressure sensors, automatic adjustment of motor speed, and maintenance of pressure stability.
• Energy saving operation: Adjust the motor speed according to actual gas demand to avoid running the motor at rated speed and reduce energy consumption.
• Soft start/soft stop: reduces the impact of starting current and extends the life of motors and equipment.
  Multi speed control: supports multi speed operation under different pressure or flow requirements.
• Protection function: overload, overvoltage, undervoltage, overcurrent, overheating and other protections to ensure the safe operation of the equipment.

Application advantages

• Significant energy-saving effect: Air compressors are usually designed according to maximum demand, and in actual operation, they are mostly in a non full load state. The V/F controlled variable frequency drive can adjust the motor speed according to actual pressure requirements, avoiding frequent loading and unloading and reducing energy waste.
• Extend equipment lifespan: Soft start and soft stop functions reduce mechanical impact, lower equipment wear, and extend the service life of compressors and motors.
• Improve system stability: Through pressure closed-loop control, the output pressure fluctuation is small, the gas supply quality is stable, and the production efficiency is improved.
• Reduce noise: Variable frequency drive reduces the motor speed, reduces mechanical vibration and noise, and improves the working environment.
• Simplified maintenance: Reduce frequent start stop of equipment, lower maintenance costs and failure rates.

Application scenarios and selection suggestions

• Application scenarios:
  V/F controlled variable frequency drives are suitable for small and medium-sized air compressors, especially in applications where speed regulation accuracy is not high and energy saving is the main goal, such as factory gas supply systems, textiles, chemicals, food processing and other industries.
• Selection suggestion:
  Select the appropriate frequency converter based on the power, voltage level, and operating environment of the air compressor.
  Consider the protection level of the frequency converter (such as IP20, IP54, etc.) to adapt to different installation environments.
  Choose a frequency converter with built-in PID control function to facilitate constant pressure gas supply control.
  Pay attention to the overload capacity and heat dissipation performance of the frequency converter to ensure long-term stable operation.