DC Inverter Control System For VRV Application And Research

With the national energy saving requirements and the development of refrigeration technology , as a large energy consumption products, Direct impact on the energy consumption of air conditioning to the normal operation of the national economy and development.In particular, more and more energy-efficient central air-conditioning the public's concern and attention. A new, efficient, energy-saving light commercial air conditioning- VRV system more and more applications in buildings, offices and villas and other commercial establishments.With the control of technology upgrading, particularly the emergence of DC inverter technology is more energy efficiency for VRV system play a very crucial role in upgrading.Paper introduces the principle of VRV products, classification, advantages and trends;Designed a DC Inverter VRV control system , Including DC inverter compressor, DC inverter driver IC ---- IRMCF341 specific analysis and design of introduction of the principle,New IPM (Intelligent Power Module) Selection and Application of PS22A78.Also designed and implemented A VRV System indoor and outdoor communication circuit RS485 and procedures designed to ensure stable and reliable indoor and outdoor unit of information exchange and processing.The outdoor part of the paper control for multi-object multi-line, high reliability features of a dual MCU + DC inverter driver IC dedicated structure,DC inverter to achieve a better cooling system, efficient, stable and reliable operation, And adopted and ,also set aside part of the network interface for subsequent expansion and building automation system (BA) used;...