Hi everyone,

In essence, flux braking is a regenerative braking technique used in electric drive systems, where the motor’s flux and magnetizing current are enhanced during braking to generate electrical energy. This method is guided by the direct torque control (DTC) principle, which allows for precise control of the braking process without the need for additional hardware, making it both efficient and cost-effective.

One thing to keep in mind, though, is that frequent use of flux braking can subject the motor to increased thermal stress, potentially reducing its longevity and overall performance. However, for low-power motors, flux braking is particularly efficient, making it a valuable tool in many applications.

Flux braking is quite different from DC injection braking, which relies on injecting direct current (DC) into the motor. Unlike flux braking, DC injection braking does not modulate the motor’s flux during the braking phase. This gives flux braking a clear advantage, allowing for a swift transition between braking and motoring power. However, the braking power in flux braking is directly influenced by the motor’s resistance value—as the resistance increases, the braking power decreases, impacting the system's performance and efficiency.