2. BSPM Machine Operating Point

This class represents the operating point of a bearingless surface permanent magnet machine.

2.1. Input from User

The required input from the user to instantiate this class is provided below:

BSPM Operating Point

Key	Description	Units
Id	d-axis torque current magnitude relative to rated coil current	pu
Iq	q-axis torque current magnitude relative to rated coil current	pu
Ix	x-axis force current magnitude relative to rated coil current	pu
Iy	y-axis force current magnitude relative to rated coil current	pu
speed	Speed at which machine is evaluated	RPM
ambient_temp	Ambient temperature at which machine is evaluated	deg C
rotor_temp_rise	Expected rotor temperature rise	deg C

2.2. Creating a BSPM_Machine_Oper_Pt object

Finally, the below Python code block shows how to create a BSPM_Machine_Oper_Pt object. The arguments are provided to replicate the rated operating conditions of the optimized BSPM design discussed in this paper.

from eMach.mach_eval.machines.bspm.bspm_oper_pt import BSPM_Machine_Oper_Pt

ecce_2020_op_pt = BSPM_Machine_Oper_Pt(
               Id=0,
               Iq=0.975,
               Ix=0,
               Iy=0.025,
               speed=160000,
               ambient_temp=25,
               rotor_temp_rise=55,
            )