A motor protection reactor is connected between a drive and a motor to help protect motors by acting as a buffer between them.

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       A standard Pulse Width Modulated (PWM) driver converts the waveform with sharp edges in waveform transitions into a square wave-like shape and transmits it to the motor. The driver generates a usable waveform to change the speed of the motor. Because the rise times of IGBTs at switching moments are in the order of nanoseconds, overvoltage values occur depending on the switching, no matter how short the drive-motor supply cables are kept.

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       This causes the motors to overheat and malfunction; drive output reactors (dV/dT output filter modules) reduce the high voltage peaks caused by the cables between the motor drive and the motor. Motor protection reactors are commonly used with motor drives, uninterruptible power supplies, solar inverters, and active harmonic filters.

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       BENEFITS OF LOAD REACTORS:

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• It suppresses voltage increases and reduces them to a tolerable level.

• Lowers the dv/dt rating.

• Increases engine operating efficiency.

• Reduces the noise level of the engine

• It prolongs the working life of the engine by preventing overheating.

• It makes it easier to drive the engine even if the cabling is long.

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       AFTER ALL

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       Motor drive reactors act as a buffer between the driver and the motor to smooth out the sharp-edged waveform produced by the drive and reduce the voltage stress on the motor. By conditioning the waveform to a more appropriate profile, they prevent overheating of the motor and supply cables and ensure that less load is applied to the drive's current-carrying components.