Sensorless Stator Field-Oriented Controlled IM Drive at Low Speed with 𝑅_𝑟 Estimator

Table 1

Maximum output power	1 HP
Phase	3
Rated voltage	220 V
Rated current	3.1 A
Rated rotary speed	1680 rpm
𝑃 (pole)	4
𝑅𝑠	2.85 Ω
𝑅𝑟	2.3433 Ω
𝐿𝑠	0.1967 H
𝐿𝑟	0.1967 H
𝐿𝑚	0.1886 H
𝐽𝑚	0.009 N⋅m⋅sec^2/rad
𝐵𝑚	0.00825 N⋅m⋅sec^2/rad