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Xi S.,Chinese Academy of Agricultural Sciences | Xi S.,State Key laboratory of Soil Plant Machine System Technique | Zhang T.,Chinese Academy of Agricultural Sciences | Zhang T.,State Key laboratory of Soil Plant Machine System Technique | And 3 more authors.
Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering | Year: 2013

The loss analysis is one of the high precision methods for measurement of pump shaft power, and the procedures of measurement and data processing are very complex. Therefore, a discussion of an approximate calculation method was discussed in this paper. Based on theoretical derivation of loss analysis as well as the author's many years' experience in testing technology of water pumps, parts of the loss analysis process were simplified and simple measurement formulas were obtained. 3 submersible electric pumps with different power levels were randomly chosen to conduct a test in the national laboratory, and then the experimental results were compared with the theoretical calculation results. Comparison results show that the pump shaft power calculated by the approximate formula is very close to the result by loss analysis method; the average deviation between two methods for 3 pump shaft power (actual output power of motor) is not more than 0.15%. The loss analysis can be used for the calculation of actual output power and efficiency of the pump motor for electric submersible pump in factory test, and the accuracy of this approximate calculation method is verified. Source

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