Title :
DPLL Induction motor speed control: Stability and parameter variation analysis
Author :
Beni Hamed, Salah ; Ben Hamed, Mouna
Author_Institution :
Nat. Eng. Sch. of Gabes, Gabes, Tunisia
Abstract :
This paper deals with performance analysis and implementation of three phase inverter fed induction motor drive system. The closed loop control scheme of the drive utilizes the digital phase locked loop (DPLL) in the speed control loop. The former is implemented using the well known integrated circuit 4046. A linear continuous model of the drive is developed. The stability of the whole system in closed loop is analyzed using Hurwitz - Routh criterion and the stability limits on the low pass filter (LPF) time constant are predicted. The PLL control law sensitivity against induction motor (IM) parameters variation is studied. An experimental verification is carried out on one kw scalar controlled induction motor drives for a wide range of speeds, loads and stator resistance.
Keywords :
closed loop systems; digital phase locked loops; induction motor drives; invertors; low-pass filters; machine control; stability; velocity control; DPLL induction motor speed control; Hurwitz-Routh criterion; PLL control law sensitivity; closed loop control scheme; digital phase locked loop; integrated circuit 4046; linear continuous model; low pass filter; parameter variation analysis; power 1 kW; speed control loop; stability analysis; stator resistance; three phase inverter fed induction motor drive system; time constant; Induction motors; Phase locked loops; Resistance; Stator windings; Velocity control; Voltage-controlled oscillators; DPL; inverter fed IM; parameter sensitivity; scalar control; stability analysis;
Conference_Titel :
Electrical Sciences and Technologies in Maghreb (CISTEM), 2014 International Conference on
DOI :
10.1109/CISTEM.2014.7077009
