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9.14 Sine-wave Filters
When a motor is controlled by a frequency converter, resonance noise will be heard from the motor. This noise, which is the result of the design of the motor,
arises every time an inverter switch in the frequency converter is activated. The frequency of the resonance noise thus corresponds to the switching frequency
of the frequency converter.
The filter reduces the accel time of the voltage, the peak load voltage U
PEAK
and the ripple current
Δ
I to the motor, which means that current and voltage become
almost sinusoidal. Consequently, the acoustic motor noise is reduced to a minimum.
The ripple current in the Sine-wave Filter coils, will also cause some noise. Solve the problem by integrating the filter in a cabinet or similar.
AF-650 GP Design Guide
180
9
Содержание AF-650 GP Series
Страница 5: ...AF 650 GP Design Guide 4 1...
Страница 53: ...AF 650 GP Design Guide 52 4...
Страница 97: ...Please note airflow directions 6 1 5 Mechanical Dimensions AF 650 GP Design Guide 96 6...
Страница 98: ...Please note airflow directions AF 650 GP Design Guide 97 6...
Страница 99: ...Please note airflow directions AF 650 GP Design Guide 98 6...
Страница 100: ...Please note airflow directions AF 650 GP Design Guide 99 6...
Страница 173: ...Max cable length 150 m AF 650 GP Design Guide 172 9...
Страница 179: ...AF 650 GP Design Guide 178 9...