This dissertation has studied and designed the DC motor without brush fire by night, element method The purpose of design and Simulation of DC motor without brush in the development in the design. Manufacture and study of DC motor without brush to the comparison of the simulation result, designed by the finite element method of electric motor products directly without carbon brush. Before construction, we can save as much from the program. Ansys-Maxwell in motor design that we use the finite element method is the use of computer facilities in finding the past due thermal analysis in motor. In order to reduce the complexity and to facilitate problem solving. Specify the properties of the materials and conditions of use and solved by using a mathematical equation is the design and test for the values we designed DC motor without brush with the pattern slots, slot 4 models to find thermal magnetic field intensity all losses and efficiency. The comparison.From the style design of slots which are all 4 Charlotte model to evaluate the efficiency of the motor, the คือรูปแบบ slots that 1 Charlotte loss all 163.326 watts. Effective 85.96 percent are patterns that have the best form of slots and Charlotte that 3 have lose all 210.378 watts. Effective 82.62 percent. It was concluded the value if there are huge losses to the efficiency of the motor decreases.
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