PermanentMagnetLosses

Model of permanent magnet losses dependent on current and speed

    PermanentMagnetLosses

Library

Modelica/Electrical/Machines/Losses/InductionMachines

Description

Permanent magnet losses are modeled dependent on current and speed.

The permanent magnet losses are modeled such way that they do not cause a voltage drop in the electric circuit. Instead, the dissipated losses are considered through an equivalent braking torque at the shaft.

The permanent magnet loss torque is

  tau = PRef/wRef * (c + (1 - c) * (i/IRef)^power_I) * (w/wRef)^power_w

where i is the current of the machine and w is the actual angular velocity. The parameter c designates the part of the permanent magnet losses that are present even at current = 0, i.e. independent of current. The dependency of the permanent magnet loss torque on the stator current is modeled by the exponent power_I. The dependency of the permanent magnet loss torque on the angular velocity is modeled by the exponent power_w.

See also

Permanent magnet loss parameters

If it is desired to neglect permanent magnet losses, set strayLoadParameters.PRef = 0 (this is the default).

Parameters

PermanentMagnetLosses_0

NameLabelDescriptionData TypeValid Values

mo_m

m

Number of phases

Scalar

mo_permanentMagnetLossParameters

permanentMagnetLossParameters

Permanent magnet loss parameters

FromModelica('Modelica.Electrical.Machines.Losses.PermanentMagnetLossParameters')

mo_useHeatPort

useHeatPort

=true, if heatPort is enabled

Number

0
1

PermanentMagnetLosses_1

NameLabelDescriptionData TypeValid Values

mo_phi

phi

phi

Structure

mo_phi/fixed

fixed

Cell of scalars

true
false

mo_phi/start

start

Cell of scalars

mo_tau

tau

tau

Structure

mo_tau/fixed

fixed

Cell of scalars

true
false

mo_tau/start

start

Cell of scalars

mo_w

w

w

Structure

mo_w/fixed

fixed

Cell of scalars

true
false

mo_w/start

start

Cell of scalars

mo_lossPower

lossPower

lossPower

Structure

mo_lossPower/fixed

fixed

Cell of scalars

true
false

mo_lossPower/start

start

Cell of scalars

mo_is

is

is

Structure

mo_is/fixed

fixed

Cell of vectors

true
false

mo_is/start

start

Cell of vectors

mo_iRMS

iRMS

iRMS

Structure

mo_iRMS/fixed

fixed

Cell of scalars

true
false

mo_iRMS/start

start

Cell of scalars

Ports

NameTypeDescriptionIO TypeNumber

flange

implicit

Shaft end

input

1

support

implicit

Housing and support

input

2

Port 3

implicit

Optional port to which dissipated losses are transported in form of heat

input

mo_useHeatPort