The deep-bar rotor induction motor is one of the most popular motors in the high starting-torque group of three-phase squirrel-cage induction motors. This motor is commonly fitted with deep-bars, of the wedge-form, on the rotor-side. Optimising the dimensions of these bars is a tedious work, especially when the motor is required to exert a strting-torque which exceeds the normal range. This paper presents a computer aided design of the wedge-type rotor-bar to fulfill this requirement. The design concept, relating the bar-dimensions to the basic group of the motor specifications, is given by taking into consideration the skin -effect just at starting. The iterative method employed to obtain the proper cross-section area of the conductor , as well as the method of checking the preliminary dimensions, are also explained in this paper. The design process is written in form of a digital program which gives for a given output power, the proper bar-dimensions for an extended range of starting-torque ratios. The results show that for a given output power, a starting-torque ratio higher than usual can be obtained on the expense of a little increase in the starting-current ratio.
Abou-Tabl, H. (2020). A Computer Aided Design of Wedge-Type Rotor-Bars in Squirrel-Cage Induction Motor.. MEJ- Mansoura Engineering Journal, 10(2), 53-69. doi: 10.21608/bfemu.2021.177217
MLA
Hassan Ali Abou-Tabl. "A Computer Aided Design of Wedge-Type Rotor-Bars in Squirrel-Cage Induction Motor.". MEJ- Mansoura Engineering Journal, 10, 2, 2020, 53-69. doi: 10.21608/bfemu.2021.177217
HARVARD
Abou-Tabl, H. (2020). 'A Computer Aided Design of Wedge-Type Rotor-Bars in Squirrel-Cage Induction Motor.', MEJ- Mansoura Engineering Journal, 10(2), pp. 53-69. doi: 10.21608/bfemu.2021.177217
VANCOUVER
Abou-Tabl, H. A Computer Aided Design of Wedge-Type Rotor-Bars in Squirrel-Cage Induction Motor.. MEJ- Mansoura Engineering Journal, 2020; 10(2): 53-69. doi: 10.21608/bfemu.2021.177217
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