Brushless DC (BLDC) motor drives are becoming more popular in industrial, traction applications. This makes the control of BLDC motor in all the four quadrants very vitalThe motor is operated in four steady state operating modes of torque-speed plane. To control a BLDC machine it is generally required to measure the speed and position of rotor by using the sensor because the inverter phases, ac...

This paper proposes a novel torque and speed control structure for low-cost induction motor variable-speed drives with a single dc-link current sensor. The controller is based on reconstruction of the active and instantaneous reactive power from the dc-link current without the use of a shaft sensor. An effective way of achieving tracking of set values of motor torque and flux is to base the est...

The 4-leg inverter can adjust the load current or output voltage even under unbalanced conditions, but it is known that additional switch arm to 3-leg increase overall cost and failure rate. This paper aims analyze rate mean time between failures (MTBF) of inverters using part count analysis (PCA) fault-tree (FTA), compare price inverters. FTA rate, including type, number connection status circ...

This paper presents the mathematical model and control of a voltage source inverter (VSI) connected to an alternating current (AC) microgrid. The VSI considered in this is six switches three-phase Pulse Width Modulated (PWM) inverter, whose output active reactive power controlled dq reference frame. strategy presented here state feedback with disturbance cancellation. signal either provided by ...

This paper deals with the power quality (PQ) improvement by using a transformer less Hybrid Active Power Filter (HAPF) based on a six switch two leg inverter with battery and solar system through boost converter which increases the reliability of power supply by reducing the Total Harmonic Distortion (THD) and increase the voltage level. The control methods of instantaneous reactive power theor...

This paper presents a comparative study of two distinct modulation strategies applied to a permanent magnet synchronous motor drive, under inverter faulty operating conditions. A rotor field oriented control is used and a performance evaluation is conducted by comparing a hysteresis current control with a space vector modulation technique. Three different operating conditions are considered: no...

This paper presents a ZVS PWM inverter with voltage clamping technique using only a single auxiliary switch. The structure is particularly simple and robust. It is very attractive for single-phase high power applications. Conduction and switching losses are reduced due to implementation of the simple active snubber circuit, that provides ZVS conditions for all switches, including the auxiliary ...

In modern industrial and power electronics applications, high-voltage high-current integrated modular transistors (IGBTs) are increasingly being utilized. The F-type inverter, which is a modified version of the T-type has emerged as promising option. This configuration separates common point bidirectional switch, reducing voltage stress resulting in lower inverter costs losses. simplified desig...

This paper presents a ZVS PWM Half-Bridge Inverter with active voltage clamping technique using the reverse recovery energy of the diodes . The structure use only a single auxiliary switch and is particularly simple and robust. It is very attractive for single-phase high power applications. Switching losses are reduced due to implementation of the simple active snubber circuit, that provides ZV...

This paper reports the design, characterization and implementation of a fiber Bragg grating (FBG)-based temperature sensor for an insulted-gate Bipolar transistor (IGBT) in a solar panel inverter. The FBG is bonded to the higher coefficient of thermal expansion (CTE) side of a bimetallic strip to increase its sensitivity. Characterization results show a linear relationship between increasing te...