Of Co <sub> 2 </ Sub> Refrigerant Heat Pump Water Heater Heat Pump Electrical Control System

Can be the kitchen, public baths and subterranean heat to provide hot water according to the hot pump water- heater of the CO₂ work.The water of the subterranean heat can circulate an usage, raising the utilization of the water resources thus.Pass the control toward the CO₂ dischargeses, the water current quantities, each electromagnetism valve etc, make the temperature that the water of the run off attains to set in advance.The development is suitable for CO₂ hot pump water- heater efficiently compressor,enduring high pressure of change the hot machine and perfect control strategy efficiently will be later the CO₂ hot to pump a water- heater a research of three greatest point.But the textual research point is the research that the hot pump electricity controls system and controls strategy up.This text research according to CO₂ work of hot pump water- heater the hot pump electricity control system.Introduce the research, the application background and motor related technical development, analyzed a hot pump electricity control the composing and the work principle of the system, introduced to have composing, principle, mathematics model of brushless direct current motor control system and circulate characteristic in detail among them, analyze system want to carry out of function, elaborate the control strategy of the system, pass to imitate and really experimented to examine the control strategy of the usefulness and electricity control whether system attain or not want to complete of function.For carrying out according to the hot pump water- heater of the CO₂ work request of function, design to take the American Microchip company dsPIC30F6010 as the hardware electric circuit of the core controller, not only apply PID and on-line from whole settle the fuzzy PID control strategy to draw up the software procedure and carry on adjusting to try, but also brushless dc motor model verification control strategy through the MATLAB software establishment and carry on imitate really, control the rationality and the usefulness of strategy by examination;Take the dsPIC30F6010 as the quality and the insulation degree of the power supply power supply of the core controller for the sake of assurance in the meantime, adopt the switch power supply technique, develop many roads to insulate to output DC-DC switch power supply;Complete the controller hardware electric circuit design and the control program design.Constructed a more complete motor to adjust soon system, carry out according to the function request by the hot pump water- heater of the CO₂ work.