Sensorless Load Torque Estimation and Passivity Based Control of Buck Converter Fed DC Motor

Table 1

Specifications for buck converter fed DC motor.

S. number	Buck converter		DC motor armature side
	Symbol	Value	Symbol	Value
1		2.769 mH		1 HP
2	Rated current	6 A	Supply voltage	180 Volt (base value)
3		440.1 F		5.1 A (base value)
4	Switching frequency	32 KHz		1500 RPM (base value)
5	DC supply voltage	220 V		111.6 mH
DC motorfield side				6.1 Ω
6		696.1 Ω		3.44 H
7		25.023 H		kg*m^2
8		180 V		Nm/rad
9			Torque	4.75 Nm (base value)