RCAIDE.Library.Components.Powertrain.Converters.DC_Motor

DC_Motor#

class DC_Motor(*args, **kwarg)[source]#

Bases: Converter

A direct current (DC) electric motor component model for electric propulsion systems.

tag#

Identifier for the motor. Default is ‘motor’.

Type:: str

resistance#

Internal electrical resistance of the motor [Ω]. Default is 0.0.

Type:: float

no_load_current#

Current drawn by the motor with no mechanical load [A]. Default is 0.0.

Type:: float

speed_constant#

Motor speed constant (Kv). Default is 0.0.

Type:: float

efficiency#

Overall motor efficiency. Default is 1.0.

Type:: float

gearbox.gear_ratio#

Ratio of output shaft speed to motor speed. Default is 1.0.

Type:: float

power_split_ratio#

Ratio of power distribution when motor drives multiple loads. Default is 0.0.

Type:: float

design_torque#

Design point torque output [N·m]. Default is 0.0.

Type:: float

interpolated_func#

Function for interpolating motor performance. Default is None.

Type:: callable

Notes

The DC_Motor class models a direct current electric motor’s performance characteristics. It accounts for electrical, mechanical, and thermal effects including:

Internal resistance losses

No-load current losses

Gearbox losses

Speed-torque relationships

Power distribution for multiple loads

Definitions

‘Kv’: Motor velocity constant, relating voltage to unloaded motor speed
‘No-load Current’: Current drawn by motor to overcome internal friction when unloaded
‘Power Split Ratio’: Fraction of total power delivered to primary load in multi-load applications