Variable Ratio Hydrostatic Transmission Simulator for Optimal Wind Power Drivetrains

Table 1

Model main parameters.

Parameter	Units	Value
Input shaft speed	RPM	Variable
Electric motor inertial mass	Kg⋅m^2	0.0008
Pump displacement	cm^3/rev	18.02
Fluid viscosity	cSt	55.4
Fluid density	Kg/m^3	890
Bulk modulus	bar	14560
Hydraulic motor displacement	cm^3/rev	0.29
Electric motor armature resistance	ohms	0.6
Torque constant	N⋅m/A	0.159