Development of variable frequency drive module for compressors

Meeting & Discussion

Technology Introduction:
• Technological Innovation – The 7kW compressor variable frequency drive module for heating uses field-oriented control (FOC) without sensors, and a boost circuit architecture with active power factor correction (APFC) is installed in the front stage to improve the power factor. Users can control the compressor speed through RS485 communication or speed modulation command (PWM interface). The rated power is 1.3kW, and the drive efficiency is ≧93%.
• Competitive or Intellectual Property Advantages – Special inverter for refrigerant compressor with Taiwan's production line.
• Important Achievements / Awards – The MIT solution and supply chain for compressors of HVAC application.
Industry Applicability:
This module develops wide-range capacity-adjustable compressor drive control technology, with a compressor load capacity range of 20~130%. This helps to improve electromechanical module technology, open variable-frequency electromechanical drive firmware, support the domestic heat pump industry's electromechanical control software/hardware independent capabilities, and establish a complete compressor/drive controller supply solution.

Industrial Technology Research Institute

ITRI is a world-leading applied technology research institute with more than 6,000 outstanding employees. Its mission is to drive industrial development, create economic value, and enhance social well-being through technology R&D. Founded in 1973, it pioneered in IC development and started to nurture new tech ventures and deliver its R&D results to industries. ITRI has set up and incubated companies such as TSMC, UMC, Taiwan Mask Corp., Epistar Corp., Mirle Automation Corp., and Taiwan Biomaterial Co.