Performance Analysis of a Hybrid Power Cutting System for Roadheader

Table 1

Parameters of the new hybrid power cutting system.

	Parameters	Value
Electric motor	Phase number	3
	Number of pole pairs	3
	Stator current frequency [Hz]	50
	Phase voltage [V]	1140
Hydraulic motor	Displacement [ml/r]	80
	Maximum speed [rpm]	3900
	Circuit pressure [MPa]	25
Cutting head	Inertia of cutting head [kgm^2]	500
	Stiffness of spline sleeve [Nm/rad]	10^9
	Damping of spline sleeve [Nm/(rad/s)]	10^2