PLECS 1.3 Online Help

Round Rotor Synchronous Machine

Purpose

Detailed model of a synchronous machine with round rotor.

Library

Machines

Description

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There are two different models for the Round Rotor Synchronous Machine, which are mathematically equivalent. The standard model can only be used with the continuous state-space method. The discretizable model can be used with both the continuous and the discrete state-space method.

The machine is modeled in the rotor reference frame. It operates as a motor or generator; the sign of the mechanical torque determines the mode of operation (positive for motoring, negative for generating). All electrical variables and parameters are viewed from the stator side. In the component icon, phase a of the stator winding and the positive pole of the field winding are marked with a dot.

Electrical System

pict

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Stator flux linkages:

'd = Llsid + Lm;d id + i0f + i0k;d


'q = Llsiq + Lm;q iq + i0g + i0k;q

Electromagnetic torque:

Te = 3p ('d iq   'qid)
     2

Mechanical System

Mechanical rotor speed !m:

       1
!m  = J- (Te    F!m    Tm)

m  = !m

Parameters and Dialog Box

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Most parameters for the Salient Pole Synchronous Machine are also applicable to this round rotor machine. Only the following two parameters differ:
Field resistance
A two-element vector containing the field winding resistance Rf0 and Rg0 of the d-axis and the q-axis. The values in ohms (_O_) are referred to the stator side.
Field leakage inductance
A two-element vector containing the field winding leakage inductance Llf0 and Llg0 of the d-axis and the q-axis. The values in henries (H) are referred to the stator side.

Inputs and Outputs

Same as for the Salient Pole Synchronous Machine.