Phase-locked loops (PLLs) and frequency-locked loops (FLLs) are of importance in power
and energy applications. Both technologies have been introduced to speed-sensorless …

Speed-sensorless control of induction motor drives based on the extended state observer
(ESO) attracts much popularity due to its key characteristics, eg, satisfactory estimation …

In speed-sensorless-controlled induction motor (IM) drives, current sensors are important but
prone to failure, which may significantly degrade control performance. In view of this, this …

Finite-position-set phase-locked loop (FPS-PLL) is a research hotspot in the sensorless
control of permanent magnet synchronous motor (PMSM) due to its excellent dynamic …

Speed-sensorless control (SSC) techniques enhance the overall reliability while reducing
the cost, and thus become attractive in induction motors (IMs). Simplicity and flexibility are …

The phase-locked loop (PLL) algorithm uses the external input reference signal to control
the frequency and phase of the internal oscillation signal of the loop; thus, the control signal …

Speed estimation schemes based on the closed-loop synchronization (CLS) methods for
speed-sensorless control of motor drives attract much popularity due to several advantages …

In sensorless control of interior permanent magnet synchronous motor (IPMSM) drives,
extended state observers (ESOs) are preferred due to their advantages, eg, flexible …

In most motor drive applications, the speed sensor is of concern because it potentially
deteriorates the system reliability and increases the system cost. To mitigate the adverse …

In the speed-sensorless vector control of induction motors (IMs), the speed estimation
accuracy suffers from the deteriorated current measurement caused by the current sensor …