Single-chip heat-pump control system based on an MCS-51 microcontroller core

Abstract

Heat pumps are typically controlled by a programmable logic controller (PLC). However, PLCs are generally expensive and large. This work uses an MCS-51-based controller to control a heat pump, so that the size of the controller of a heat-pump system can be reduced markedly. Moreover, the proposed MCS-51-based controller can detect the status of each heat pump’s sensor automatically, so that a user can know whether a sensor is normal or abnormal, thereby protecting the heat-pump compressor. Knowing the number of a faulty sensor also helps during maintenance. Experimental results demonstrate that the proposed MCS-51-based controller can replace a PLC-based controller and control a heat pump successfully, achieving an inexpensive and effective solution for controlling heat pumps.

Keywords

Heat pump MCS-51

Get full access to this article

View all access options for this article.

References

Benstead, R. , 1988, ‘‘Industrial heat pumps,’’ Power Engineering Journal 2(3), 173-178.

Domijan, A. , Hancock, O. , and Maytrott, C. , 1992, ‘‘A study and evaluation of power electronic based adjustable speed motor drives for air conditioners and heat pumps with an example utility case study of the Florida Power and Light Company, ’’ IEEE Transactions on Energy Conversion 7(3), 396-404.

Huang, B.J. , 2000, ‘‘Solar-assisted heat pump water heater,’’ in Proceedings of the National Solar Energy Conference , Taipei, Taiwan.

Lee, S.W. , Jeong, M.J. , Jang, B.I. , Yoo, C.H. , Kim, S.G. , and Park, Y.S. , 1998, ‘‘Fuzzy precompensated PI controller for a variable capacity heat pump,’’ IEEE International Conference on Control Application 2, 953-957.

Reed, J.H. , Broadwater, R.P. , and Chandrasekaran, A. , 1989, ‘‘Load control experiments with heat pumps during the winter,’’ IEEE Transactions on Power Deliver 4(1), 646-652.

Shaffer, J.E. , 1985, ‘‘Heat pump water heater control,’’ IEEE Transactions on Industrial Applications IA-21 (5), 1254-1256.

Yuanyuan, S. , Jia, L. , and Runsheng, L. , 2001, ‘‘Single-chip speech recognition system based on 8051 microcontroller Core,’’ IEEE Transactions on Consumer Electronics 47(1), 149-153.