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Home > Issues > RetrievePower Consumption Analysis and Miniaturization Design of Permanent Magnet Synchronous Motor for Washing Machine with respect to Gear Use
Journal of Magnetics, Volume 25, Number 1, 31 Mar 2020, Pages 56-63
Jeonghyun Cho (Department of Electrical and Computer Engineering, Pusan National University, Busan 46241, Republic of Korea), Hongsik Hwang (Department of Electrical and Computer Engineering, Pusan National University, Busan 46241, Republic of Korea), Cheewoo Lee * 
(Department of Electrical and Computer Engineering, Pusan National University, Busan 46241, Republic of Korea)
(Department of Electrical and Computer Engineering, Pusan National University, Busan 46241, Republic of Korea)
Abstract
In this paper, the energy consumption of PMSM was compared simultaneously in direct and indirect drive systems,
considering the efficiency of the operating point in the washing and dehydration modes. DD (Direct
Drive) washing machines have the disadvantage of high-power consumption due to the difference in driving
point efficiency of washing and dehydration. Therefore, in this paper, a method of changing the washing operation
point using a gear is proposed. Two types of miniaturization models that satisfies the output level under
two gear conditions are designed, and energy consumption with respect to the operating mode of the washing
machine is analyzed and compared. From the viewpoint of power consumption, optimal stacking and gear
combination model is selected. In conclusion, the energy consumption of the optimum gear model is decreased
about 97 Wh and material cost of the motor down by 57.3 % compared with base DD motor.
considering the efficiency of the operating point in the washing and dehydration modes. DD (Direct
Drive) washing machines have the disadvantage of high-power consumption due to the difference in driving
point efficiency of washing and dehydration. Therefore, in this paper, a method of changing the washing operation
point using a gear is proposed. Two types of miniaturization models that satisfies the output level under
two gear conditions are designed, and energy consumption with respect to the operating mode of the washing
machine is analyzed and compared. From the viewpoint of power consumption, optimal stacking and gear
combination model is selected. In conclusion, the energy consumption of the optimum gear model is decreased
about 97 Wh and material cost of the motor down by 57.3 % compared with base DD motor.
Keywords: washing machine; energy consumption; gear
DOI: https://doi.org/10.4283/JMAG.2020.25.1.056
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