2022

Study of Measurement Uncertainty Evaluation Method of Three-phase Induction Motor Efficiency

by EMLAB on Jul 11, 2022
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저자 Yong-Joon Park
Jin Hur
논문지명 The Transactions of
the KIEE
Study of Measurement Uncertainty Evaluation Method of Three-phase Induction Motor Efficiency
삼상유도전동기 효율의 측정불확도 평가방법 연구
Yong-Joon Park ․ Jin Hur

Abstract
In this paper, we propose a method of calculating the measurement uncertainty for the result calculated through the loss separation
method, which is one of the efficiency measurement methods of three-phase induction motors. The proposed algorithm calculates the
uncertainty for the factors that affect the calculation of each input quantity and then proceeds according to the procedure in Table 2
using a mathematical model. To prove the validity, the efficiency of a 2.2kW three-phase induction motor was measured. The true
value of efficiency considering the proposed measurement uncertainties was estimated to be in the range of 88.17 to 88.55%. By the
way, considering the tolerance range (1-η)×(-15)% for the reference value 89.5% for measuring the efficiency of the three-phase
induction motor, the allowable efficiency reference value is 87.93%. Therefore the estimated efficiency true value should be judged
to satisfy the minimum consumption efficiency.

Key Words
Efficiency, Loss seperation method, Test method, Three-phase Induction motor, Uncertainty

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