Brushless DC Motor Torque Constant vs Speed Constant: How Kt and Kv Relate

BLDC motor torque constant Kt and speed constant Kv comparison showing their inverse relationship

Motor constants like the torque constant (Kt) and speed constant (Kv) are often misinterpreted, which can lead to suboptimal motor selection. They don’t define a motor’s power, but rather how a specific DC motor winding converts electrical energy into mechanical motion. The torque constant (Kt) and speed constant (Kv) of a brushless DC motor are […]

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