9
SUPPORTED MOTORS
9 SUPPORTED MOTORS
This chapter presents the types of motors compatible with the MVW01 and the respective control strategies.
9.1 INDUCTION MOTOR
The MVW01 is a high performance product designed for speed and torque control of three-phase induction motors. Motors of this type can
be controlled by the following control strategies:
Scalar control (V/f);
Vector control (for details, see Section 11.3 INCREMENTAL ENCODER on page 11-14 );
Vector control without encoder (’sensorless’).
For more detailed information on the controls, refer to the Programming Manual available at www.weg.net.
9.2 SYNCHRONOUS MOTOR
In order to allow driving synchronous motors, the MVW01 introduces a number of software functions and new hardware elements for com-
manding and controlling these motors.
Figure 9.1 on page 9-1 presents the general diagram for driving the synchronous motor using the MVW01 . For more details on the ex-
citation control system and the direct connection of the motor to the line, refer to the electrical project of the inverter.
Rede de
alimentação
E
Y Y
- +
MS
Intertravado
Conversor CA-CC
Sistema de
controle de
excitação
Crowbar
MVW01
MVC3
MVC4
RSSI
Power
supply
AC-DC converter
Excitation
control
system
Interlocked
Auxiliar network
Figure 9.1: General diagram of the inverter for synchronous motor
9.2.1 ABSOLUTE ENCODER WITH RSSI BOARD
In synchronous machine drive applications, it is necessary to use an absolute encoder so as to obtain the exact rotor position in relation to the
stator, since the incremental encoder is not able to provide such information.
MVW01 | 9-1
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