modelTorqueControlledMachine

Signal torque input machine

Extends from ElectroMechanicalDrives.Icons.Machine.

Information

This is an idealized torque controlled electric machine model. The actual torque of the electric machine can be adjusted by means of the signal input.

Fig. 1: Principle of controlled machine model without gear

The following variables are calculated in the model

Machine

aMachine = angular acceleration of machine
phiMachine = mechanical angle of machine
wMachine = angular velocity of machine
tauMachine = (electrical) torque of machine
powerMachine = power of machine

This machine model considers the following effect:

Optional field weaking is considered by
- the maximum torque of the machine, tauLimit for w ≤ wBase
- the base speed limit wBase
- torque reduction proportial to wBase/w for w > wBase

Parameters

Type	Name	Default	Description
Boolean	useFieldWeakening	false	True, if field weakening is considered
Modelica.Units.SI.Torque	tauLimit	Modelica.Constants.inf	Torque limit
Modelica.Units.SI.AngularVelocity	wBase	Modelica.Constants.inf	Base angular frequency

Connectors

Type	Name	Default	Description
Modelica.Mechanics.Rotational.Interfaces.Flange_b	flange		Shaft flange
Modelica.Blocks.Interfaces.RealInput	tau_ref		Reference torque as input signal

Components

Type	Name	Default	Description
Modelica.Mechanics.Rotational.Sources.Torque	torque
TorqueLimiter	torqueLimiter
Modelica.Units.SI.AngularVelocity	wMachine	speedMachineSensor.w	Angular velcocity of machine
Modelica.Units.SI.Angle	phiMachine		Absolute rotation angle of machine
Modelica.Units.SI.AngularAcceleration	aMachine		Absolute rotational acceleration of machine
Modelica.Units.SI.Torque	tauMachine	torqueMachineSensor.tau	Torque of machine
Modelica.Units.SI.Power	powerMachine	powerMachineSensor.power	Power of machine
Modelica.Mechanics.Rotational.Sensors.SpeedSensor	speedMachineSensor
Modelica.Mechanics.Rotational.Sensors.TorqueSensor	torqueMachineSensor
Modelica.Mechanics.Rotational.Sensors.PowerSensor	powerMachineSensor