dc.contributor.authorFang, Zhenghua
dc.date.accessioned2017-05-18T07:38:22Z
dc.date.available2017-05-18T07:38:22Z
dc.date.issued2017
dc.identifier.urihttp://hdl.handle.net/10356/71672
dc.description.abstractSuperheat control play a primary role in refrigeration and air conditioning systems. Good superheat regulation able to optimizing system efficiency and prevent the component from damaging. However, it is a challenging problem to control superheat due to the lack of understanding towards components parameters. This report reveals independent control method for heat pump system by using Proportional-Integral-Derivatives(PID) controller to control superheat. In heat pump system, there are two variables to be controlled. Decoupling model was used to eliminate the interfering loops between these two variables so that the PID controller can be designed individually. The two controlled variables are Superheat and heater tank temperature which are respectively control by Electric Expansion Valve(EEV) and compressor frequency to save energy and enhance system performance. For a respectively controlled variable to meet the set point, empirical data is collected from the experiments and analyze to obtain First Order Plus Time Delay(FOPTD) transfer function. PID Controller for the variable then can be design based on FOPTD.en_US
dc.format.extent53 p.en_US
dc.language.isoenen_US
dc.rightsNanyang Technological University
dc.subjectDRNTU::Engineering::Electrical and electronic engineeringen_US
dc.titleVariable speed drive control for heat pump systemen_US
dc.typeFinal Year Project (FYP)en_US
dc.contributor.supervisorWang Youyien_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.degreeBachelor of Engineeringen_US


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