Carrier Frequency - Veichi Electric AC60 series Manual

upgrade. Low frequency torque voltage upgrade compensation changes by follow
the change of the motor stator current. The greater the stator current is the
higher lower frequency torque voltage upgrades.
E-20

Carrier frequency

This function is mainly used to improve situation of the noise and vibration
which possible occur during the inverter operation .When the carrier frequency
is high, the current waveform is very ideal and the motor noise is very small.
It is very applicable for the place need silent operation. But at this time,
the switch of the main components loss is large and machine generates large
heat while efficiency decreased and effort reduced. Meanwhile, radio
interference is large. Another question of high carrier frequency operation
is capacitive leakage current increasing. If there is leakage protection
devices, it may cause maloperation, and may also give rise to over-current.
When frequency carrier is low, it is contrary to the phenomenon mentioned
above.
Different motor response to carrier frequency differently. The motor need
to be adjusted according to the actual situation to gain the best carrier
frequency. With the increase of the electrical capacity, smaller carrier
frequency should be selected.
Our company reserved the right to restrict the maximum carrier frequency.
range：0.07KHz～15.0KHz
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Factory
setting：※