Svpwm Control - INVT Goodrive 35 Series Operation Manual

Goodrive35 inverters
Function
code
P03.30 Low-speed friction torque
P03.31 High-speed friction torque
Corresponding frequency of
P03.32
high-speed friction torque

7.4 SVPWM control

Goodrive35 series inverters provide internal SVPWM control which can be used in the cases where it
does not need high control accuracy. It is also recommended to use SVPWM control when one
inverter drives multiple motors.
Goodrive35 series inverters provide multiple V/F curve modes. The user can select the corresponding
V/F curve to the site needs. Or they can set the corresponding V/F curve to their own needs.
Suggestions:
1. For the load of constant torque, such as the conveyor belt which runs linearly. It is properly to select
linear V/F curve because it needs constant torque.
2. For the load of decreasing torque, such as fans and water pumps, it is properly to select
corresponding 1.3th, 1.7th or 2th power of V/F curve because the actual torque is 2-squared or
3-squared of the rotating speed.
Goodrive35 series inverters provide multi-dots V/F curve, the user can change the output V/F curve
by setting the voltage and frequency of three middle dots. The whole curve is consisted of 5 dots.
The starting dot is (0 Hz, 0 V), and the ending dot is (the basic frequency of the motor, the rated
voltage of the motor). During the setting processing: 0≤f
≤ V ≤ V ≤the rated voltage of the motor.
V
1 2 3
Name
0: Disabled
1: Enabled
Thousands: Torque command filter
0: Inertis filter
1: Linear ACC/DEC filter
0 – 50.0%
0 – 50.0%
1.00 Hz – 500.00 Hz
Detailed instruction of parameters
≤f ≤f ≤the basic frequency of the motor; 0≤
1 2 3
135
Basic operation instruction
Default
value
0.0%
0.0%
50.00 Hz