Abstract
In this paper we have designed a fuzzy logic controller for the speed control of bidirectional brushless DC motor (BLDC). The speed control is achieved by using fuzzy controller. The fuzzy logic control is used in three phase BLDC motor in order to control the four quadrants operations without any loss of power. In fact energy is conserved during the regenerative period and storage of excess energy created during regenerative braking condition in the battery. The bidirectional DC-DC converters are oftenly used for the battery charging and discharging application. The bidirectional dc-dc converter can be operated in buck boost mode. The stored energy in the battery provides maximum power to the BLDC motor, while during regenerative braking operation the energy is fed back to the source by the same bidirectional buck-boost converter. The simulation will be done for Brushless DC motor with fuzzy logic controller using MATLAB/Simulink software.
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