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add pole pairs to torque calculation

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Oskar Weigl
2019-09-27 18:42:29 -07:00
parent 4015ed09dd
commit e4c558fb1c
1 changed files with 6 additions and 3 deletions
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analysis/motor_analysis/ac_induction_motor.py
+6 -3
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@@ -8,10 +8,11 @@ from engineering_notation import EngNumber
filename = "oscilloscope.csv"
PLOT_INITAL = True
DO_FITTING = True
DO_FITTING = False
PLOT_PROGRESS = False
REPORT_PROGRESS = True
assumed_rotor_resistance = 1
pole_pairs = 2
class ACMotor():
"""
@@ -119,10 +120,12 @@ class ACMotor():
print('Derived parameters:')
mutual_inductance = motor.get_mutual_inductance()
coupling_factor = mutual_inductance / self.params[ACMotor.pl['rotor_inductance']]
torque_constant = coupling_factor * mutual_inductance
torque_constant = pole_pairs * coupling_factor * mutual_inductance
motor_constant = torque_constant / (3.0 * self.params[ACMotor.pl['stator_resistance']])
print('mutual_inductance = {}H'.format(EngNumber(mutual_inductance)))
print('coupling_factor = {}'.format(EngNumber(coupling_factor)))
print('torque_constant = {}Nm/A^2'.format(EngNumber(torque_constant)))
print('motor_constant = {}Nm/W'.format(EngNumber(motor_constant)))
def print_run_info(self, y):
final_stator_current_d = np.real(y[0,-1])
@@ -131,7 +134,7 @@ class ACMotor():
mutual_inductance = self.get_mutual_inductance()
coupling_factor = mutual_inductance / self.params[ACMotor.pl['rotor_inductance']]
final_torque_per_q_amp = coupling_factor * final_rotor_flux_d
final_torque_per_q_amp = pole_pairs * coupling_factor * final_rotor_flux_d
print()
print('Final values:')