Svpwm Control Mode - IMO HD2 IP Series Instruction Manual

HD2 IP55 High-ingress Protection Series Inverters
Function
code
P03.36
P03.37
P03.38
P03.39
P17.32

5.5.4 SVPWM control mode

The HD2IP series inverter also carries built-in SVPWM control function. SVPWM mode can be
used in cases where high control precision is not required. In cases where an inverter needs to
drive multiple motors, it is also recommended to adopt SVPWM control mode.
The HD2IP series inverter provides multiple kinds of V/F curve modes to meet different field
needs. Users can select corresponding V/F curve or set the V/F curve as needed.
Suggestions:
1. For the load featuring constant moment, eg, conveyor belt which runs in straight line, as the
moment should be constant during the whole running process, it is recommended to adopt
straight-type V/F curve.
2. For the load featuring decreasing moment, eg, fan and water pump, as the relation between
its actual torque and speed is squared or cubed, it is recommended to adopt the V/F curve
corresponds to power 1.3, 1.7 or 2.0.
The HD2IP series inverter also provides multi-point V/F curve. Users can alter the V/F curve
outputted by inverter through setting the voltage and frequency of the three points in the middle.
The whole curve consists of five points starting from (0Hz, 0V) and ending in (fundamental
motor frequency, rated motor voltage). During setup, it is required that 0≤f1≤f2≤f3≤fundamental
motor frequency, and 0≤V1≤V2≤V3≤rated motor voltage.
Name
ASR differential gain
High-frequency ACR
proportional coefficient
High-frequency ACR
integral coefficient
ACR high frequency
switching threshold
Flux linkage
Output voltage
V
b
Straight-type
Description
0.00–10.00s
In the closed-loop vector control mode
(P00.00=3), when the frequency is lower
than the ACR high-frequency switching
threshold (P03.39), the ACR PI
parameters are P03.09 and P03.10; and
when the frequency is higher than the ACR
high-frequency switching threshold
(P03.39), the ACR PI parameters are
P03.37 and P03.38.
Setting range of P03.37: 0–65535
Setting range of P03.38: 0–65535
Setting range of P03.39: 0.0–100.0% (in
relative to the maximum frequency)
0.0–200.0%
Torque -down V/F curve (1.3
Torque -down V/F curve (1.7
Torque -down V/F curve (2.0
Square-type
Output frequency
f
b
-54-
Basic Operation Instructions
Default
value
0.00s
100.0%
th order)
th order)
th order)
1000
1000
0.0%