Sinus filters play a critical role in converting the output voltage of frequency converters into a sinusoidal waveform, thus bridging the gap between the frequency converter and the motor. Frequency converters generate significant electrical noise and harmonics along the motor cables, reducing the load and increasing the insulation stress on the motor. Sinus filters support electromagnetic compatibility (EMC) and reduces voltage spikes by reducing these interference signals. Unlike line filters, sinus filters improve system performance by displaying a lower cut-off frequency.

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       FUNCTIONALITY OF SINUS FILTERS

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       Motor drivers use pulse-width modulation (PWM) to create a square-wave output voltage. While effective for control purposes, this square wave can damage motor components and connected electrical systems. To overcome these challenges, sinus filters, configured as series LC networks, convert the square wave output into a more desirable sinusoidal form.

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       WAVEFORM CORRECTION

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       Converting the output voltage from square wave to sinus wave improves the motor's running smoothness and efficiency, resulting in better overall performance.

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       REDUCING HARMONICS

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       By its very nature, the square wave has harmonics of the fundamental frequency, integer multiples. These harmonics can cause excessive heat generation in the motor and unwanted noise and vibration. Sinus filters effectively attenuate these harmonics, extending motor life and providing a quieter working environment.

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       VOLTAGE RIPPLE REDUCTION

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       Voltage fluctuations during engine operation can risk the performance of adjacent electronic devices. Sinus filters stabilize these fluctuations, increasing the system's reliability and stability.

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       ELECTROMAGNETIC COMPATIBILITY (EMC)

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       Harmonics and voltage fluctuations are significant contributors to electromagnetic interference (EMI). Using sinus filters significantly reduces these interferences and ensures the equipment works harmoniously within the electronics ecosystem.

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       APPLICATIONS FOR SİNUS FILTERS

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       Industrial Motor Drives are essential for controlling motors, especially in extensive industrial environments with long cable runs.

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Inverters: Improve the quality of energy from solar systems fed into the grid.

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HVAC Systems: Regulates the motors in air conditioning and ventilation systems.

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Elevator and Escalator Systems: Promote smoother and quieter motor operations.

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Pumps: Effectively control water and wastewater management pumps.

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Crane Systems: Precisely manage motors for crane applications.

 

       BENEFITS OF SINUS FILTERS

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• Aerodynamic, structural design,

• Energy-efficient operation,

• Extended service life,

• Reduced noise and vibration levels,

• Enhanced power factor performance,

• Improved system security,

• Wide frequency range capabilities,

• High standards of durability and flexibility.

 

Incorporating sinus filters into motor control systems optimizes performance and addresses critical electrical challenges, providing an enhanced operating environment for motors and related electronics.