Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

A synchronous machine with permanent magnets starts braking from nominal speed by feeding a diode bridge, which in turn feeds a braking resistor. Since induced voltage is reduced proportional to falling speed, the braking resistance is set proportional to speed to achieve constant current and torque.

Default machine parameters are used

Parameters (4)

R	Value: 1 Type: Resistance (Ω) Description: Nominal braking resistance
wNominal	Value: 2 * pi * smpmData.fsNominal / smpmData.p Type: AngularVelocity (rad/s) Description: Nominal speed
JLoad	Value: 0.29 Type: Inertia (kg·m²) Description: Load's moment of inertia
smpmData	Value: Type: SM_PermanentMagnetData Description: Synchronous machine data

Components (15)

	smpm	Type: SM_PermanentMagnet
	ground	Type: Ground
	terminalBox	Type: TerminalBox
	inertiaLoad	Type: Inertia
	speedSensor	Type: SpeedSensor
	smpmData	Type: SM_PermanentMagnetData Description: Synchronous machine data
	currentQuasiRMSSensor	Type: CurrentQuasiRMSSensor
	diodeBridge2mPulse	Type: DiodeBridge2mPulse
	variableResistor	Type: VariableResistor
	gain	Type: Gain
	limiter	Type: Limiter
	ac2dc	Type: Gain
	starM	Type: Star
	voltageQuasiRMSSensor	Type: VoltageQuasiRMSSensor
	grounding	Type: Resistor

SMPM_Braking

Diagram

Information

Parameters (4)

Components (15)