Singular Perturbation Theory-Based Qualitative Dynamics Investigation of Flywheel Energy Storage System in Discharge Mode

Table 3

Nomenclature for parameters with values.

Parameter	Value
Voltage-loop 𝐾𝑝𝑣	60
Voltage-loop 𝐾𝑖𝑣	49
Current-loop 𝐾𝑝𝑖	40
Current-loop 𝐾𝑖𝑖	36
Nominal angular velocity 𝜔ref	800 rads^−1
Transfer inductance 𝐿	0.7 mH
Filter capacitance 𝐶1	1 mF
Filter capacitance 𝐶2	1 mF
Line resistance 𝑅𝑚	0.5 Ω
Line inductance 𝐿𝑚	0.36 mH
Torque constant 𝐾𝑚	0.0673 Nm/A
Line back-EMF constant 𝐾𝑒	0.0625 V/rads^−1
Friction coefficient 𝐵𝑣	0.0001 Nm/rads^−1
Moment of inertia 𝐽	0.123 kgm^2
Load resistance 𝑅	5 Ω