Motor Driver Input Reactors
Motor Driver Input Reactors
Motor drives (VFD/Inverter), which are widely used in industrial facilities, can negatively affect energy quality by injecting harmonic currents into the network. Sudden current changes and voltage fluctuations also have negative effects on both the drive and connected equipment.
Motor driver input reactors are an important protection and remediation piece of equipment that minimizes these negative effects by connecting to the driver input.
These reactors:
Motor driver input reactors are an important protection and remediation piece of equipment that minimizes these negative effects by connecting to the driver input.
These reactors:
- It reduces harmonic currents spreading to the grid.
- It limits sudden current changes.
- It protects the driver’s equipment.
- It regulates the interaction between the grid and the driver.
- It increases system efficiency.
Description
Drive Output Reactors
Voltage waveforms generated by motor drives can cause serious electrical stress on motor windings. The dv/dt effect, high-frequency components, and voltage spikes can significantly shorten motor service life.
Drive output reactors are connected between the drive and the motor to reduce these adverse effects and ensure healthier motor operation.
Connected between the drive and the motor, drive output reactors:
- Limit dv/dt voltage rise rates,
- Protect motor insulation and windings,
- Reduce harmonic current effects and limit peak currents,
- Prevent excessive heating,
- Extend the service life of motor and drive equipment,
- Improve system efficiency and reliability.


