DC Motor

DC Motor Basics

Until the 1980s the conventional (brushed) d.c. machine was the automatic choice where speed or torque control is called for, and large numbers remain in service despite a declining market share that reflects the move to inverter-fed induction motors. Applications range from steel rolling mills, railway traction, to a very wide range of industrial drives,

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Speed Control of DC Motor

The base speed listed on a DC motor’s nameplate is an indication of how fast the motor will run with rated armature voltage and rated load amperes at rated field current. DC motors can be operated below base speed by reducing the amount of voltage applied to the armature and above base speed by reducing

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Operation of BLDC Motor

Unlike a brush DC motor, a brushless DC (BLDC) motor, as the name suggests has no brushes. Because there are no brushes, a BLDC motor produces little electrical and acoustic noise, and does not suffer from the wear of brushes and the need to replace them periodically. Thus a BLDC motor is more reliable than

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Characteristics of DC Motor

The performance of a DC motor can be judged by its characteristics and a motor for any particular application can be selected easily. The performance characteristics of DC motor are: Torque versus armature current (T v/s Ia) Speed versus armature current (N v/s Ia) Torque versus speed (T v/s N) Characteristics of DC Motor While

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