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Brake resistor


Starter resistors are used for wound-rotor induction motors or for squirrel-cage stator motors (normally one step) to limit peak current during starting. The resistor topology can be a three-phase resistor with fixed ohmic value or a multiple three-phase topology with different resistor-value steps.


Brake resistors are used in many Traction, Marine (e.g thrusters and winches) and industrial Drive applications. During braking, power is generated via the electronic inverter and must be dissipated (if not absorbed by the supply) in order to prevent damage to the power electronics. Brake resistors ratings range from a few hundred watts up to several MW and the demands on these resistors are highly application dependent.

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