Table 2: Operation parameters of a 0.16 kWh/0.8 kW MEES system.

Rated work voltage 380 V
Rated work torque2.1 N m
Rated rotating speed of ES box15 r/min
Number of pole pairs for rotor 4
Rated rotating speed of rotor600 r/min
Transformation ratio of the gear 40 : 1
Moment of inertia for rotor 0.8 × 10−3 kg m2
Equivalent moment of inertia for the gear 0.0013 kg m2
Equivalent moment of inertia for the ES box 4.3264 kg m2
Torsion constant of spring 5.0178
Effective flux of permanent magnet 0.1442 Wb
Resistance of stator 1.95 Ω
Equivalent inductance of direct axis 0.2541 H
Equivalent inductance of quadrature axis 0.2541 H
Viscous damping coefficient of the motor 0.015 N/rad/s
Viscous damping coefficient of the gear 0.013 N/rad/s
Viscous damping coefficient of the spring 0.005 N/rad/s