Lust CDA3000 - Special Applications; Project Planning for Three-Phase AC Motors

Engineering Guide CDA3000
3-63
3 Selection of inverter module
DE
EN
1
2
3
4
5
6
7
A
3.3 Special
applications
3.3.1 Project
planning for
three-phase
AC motors
wide variety of three-phase AC motors can be run on the CDA3000
inverter system. Three-phase AC motors are manufactured in syn-
chronous and asynchronous design versions. The stator winding is
designed such that, when in service in a three-phase AC system, a rotat-
ing field is created in the motor which drives the rotor. The rotation speed
is determined by the following variables:
The motor type is determined by the rotor introduced into the rotating
field.
Overview of three-phase AC motors
n
s
= synchronous speed
P = number of pole pairs
f = stator frequency
A
n
s
f60⋅
P
-----------=
3-phase AC motor
Synchronous motor
Asynchronous motor
with energized rotor
Reluctance motor
Standard motor Servomotor
Energized via
slip ring
Permanently
energized
(brushless)
With damper
cage
Without damper
cage
(SYNCELL)
HF motors