Advantage of high carrier frequency: ideal
current waveform, little current harmonic wave
and motor noise.
Disadvantage of high carrier frequency:
increasing switch loss, increasing inverter
temperature, and impact to output capacity. The
inverter needs to derate on high carrier
frequency. Besides, the leakage and electrical
magnetic interference increases. Applying low
carrier frequency is contrary to the above. Too
low carrier frequency will cause unstable
running, torque decreasing and surge.
A reasonable carrier frequency has been set in
factory. In general, you do not need to modify
the parameter. When the frequency used
exceeds the default one, the inverter needs to
derate 20% for each additional 1kHz carrier
frequency. Setting range: 1.2–15.0kHz
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