INVT Goodrive350A Series Operation Manual page 147

Goodrive350A series high-performance multifunction VFD
Function
Name
code
P00.14 Carrier frequency
Description
Carrier
Electro magnetic
frequency
noise
1kHz
High
10kHz
15kHz
Low
The relationship between models and carrier
frequencies is as follows:
Model
1.5–11kW
G
15–55kW
type
Higher than
75kW
2.2–15kW
P
Higher than
type
18.5kW
Advantage of high carrier frequency: ideal
current waveform, little current harmonic
wave and motor noise.
Disadvantage of high carrier frequency:
increasing the switch loss, increasing VFD
temperature and the impact to the output
capacity. The VFD needs to derate on high
carrier frequency. At the same time, the
leakage and electrical magnetic interference
will increase.
On the contrary, an extremely-low a carrier
frequency may cause unstable operation at
low frequency, decrease the torque, or even
lead to oscillation.
The carrier frequency has been properly set
in the factory before the VFD is delivered. In
general, you do not need to modify it.
When the frequency used exceeds the default
carrier frequency, the VFD needs to derate by
10% for each increase of 1k carrier frequency.
Setting range: 1.2–15.0kHz
-142-
Noise and leakage
Cooling
current level
Low Low
High High
Default carrier
frequency
8kHz
4kHz
2kHz
4kHz
2kHz
Function parameter list
Default Modify
Model
○
depended