Variable speed drive control for heat pump system
Superheat 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 p...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2017
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| Online Access: | http://hdl.handle.net/10356/71672 |
| _version_ | 1826127051924439040 |
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| author | Fang, Zhenghua |
| author2 | Wang Youyi |
| author_facet | Wang Youyi Fang, Zhenghua |
| author_sort | Fang, Zhenghua |
| collection | NTU |
| description | Superheat 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. |
| first_indexed | 2024-10-01T07:02:26Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/71672 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:02:26Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/716722023-07-07T17:30:31Z Variable speed drive control for heat pump system Fang, Zhenghua Wang Youyi School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Superheat 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. Bachelor of Engineering 2017-05-18T07:38:22Z 2017-05-18T07:38:22Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/71672 en Nanyang Technological University 53 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Fang, Zhenghua Variable speed drive control for heat pump system |
| title | Variable speed drive control for heat pump system |
| title_full | Variable speed drive control for heat pump system |
| title_fullStr | Variable speed drive control for heat pump system |
| title_full_unstemmed | Variable speed drive control for heat pump system |
| title_short | Variable speed drive control for heat pump system |
| title_sort | variable speed drive control for heat pump system |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | http://hdl.handle.net/10356/71672 |
| work_keys_str_mv | AT fangzhenghua variablespeeddrivecontrolforheatpumpsystem |