Dynamic Modeling and Control of Electromechanical Coupling for Mechanical Elastic Energy Storage System

Table 2

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

Rated work voltage 𝑈𝑛	380 V
Rated work torque	2.1 N⋅m
Rated rotating speed of ES box	15 r/min
Number of pole pairs for rotor 𝑝𝑛	4
Rated rotating speed of rotor	600 r/min
Transformation ratio of the gear 𝑖	40 : 1
Moment of inertia for rotor 𝐽1	0.8 × 10^−3 kg m^2
Equivalent moment of inertia for the gear 𝐽𝑒	0.0013 kg m^2
Equivalent moment of inertia for the ES box 𝐽sp	4.3264 kg m^2
Torsion constant of spring 𝛼sp	5.0178
Effective flux of permanent magnet 𝜓𝑓	0.1442 Wb
Resistance of stator 𝑅𝑠	1.95 Ω
Equivalent inductance of direct axis 𝐿𝑑	0.2541 H
Equivalent inductance of quadrature axis 𝐿𝑞	0.2541 H
Viscous damping coefficient of the motor 𝐵1	0.015 N/rad/s
Viscous damping coefficient of the gear 𝐵𝑒	0.013 N/rad/s
Viscous damping coefficient of the spring 𝐵sp	0.005 N/rad/s