This paper describes the analysis and design of a low cost three phase inverter brushless dc motor (BLDC) drive.For effective utilization of the developed system, a novel direct current controlled pwm scheme (DPC)is designed and implemented.. The operational principle of the four-switch BLDC motor drive and the developed control scheme are theoretically analyzed and the performance is demonstra...

Multilevel inverter (MLI) has emerged as a key player in medium and high voltage application due to its tremendous popularity in reduced voltage stress across the power switches and low total harmonic distortion in output waveform. MLI requires large amount of power switches to perform conversion as compared to conventional converter. In MLI, as the number of levels increase number of switches ...

This paper proposes an approach to improve the cost-effectiveness of the control of variable speed drives in the robotics field. This could be achieved by the association of brushless DC motors (BLDCM)with a reduced structure DC/AC converter that is the three-switch inverter (TSI) equipping a robot arm. In a first step, we devoted the analysis, modelisation and control of a three-switch inverte...

This paper proposes a new configuration for solar energy conversion systems. One challenging issue of the photovoltaic (PV) systems is partial shading, and in this paper Module Integrated Converters (MIC) are used to overcome this problem in PV arrays. A few boost converters are employed as MICs to mitigate the shading effect. Furthermore, to reduce the cost and to increase the system performan...

This paper presents sensor-less speed control of induction motor (IM) using four switch three phase inverter (FSTPI) with direct torque and flux control (DTFC). The proposed sensor-less DTFC system consists of an adaptive observer of rotor flux to accurately estimate stator resistance and speed simultaneously, without affecting drive performances. The switching technique for DTFC of IM using FS...

Direct Torque Control of induction motor fed drives has become popular and widely used in industries due to fast and good torque response. Induction motors (IM) are simple in construction and are less sensitive to the motor parameters compared to other vector control methods. A new torque and flux control scheme called the direct torque control (DTC) has been introduced for induction motors. In...

Multilevel inverter created a new evolution of newer topologies. Some of the recently proposed multilevel inverter topologies with reduce power switch count are reviewed and analysed. This paper will expose the idea of qualitative and quantitative parameter of multilevel inverter. Then this paper will share creation and an updating of various Topologies. Based on a detailed comparison of these ...

In order to meet the high reliability of aviation inverters, the paper established a new three-level inverter which can increase the reliability in safety-critical applications, what’s more, the new topology adding assistant leg to control neutral-point voltage independently. On the basis of the new topology, a mixed logic dynamic (MLD) model was established for the new inverter circuits, and t...

This Paper introduces new hybrid converter topologies which can supply simultaneously AC as well as DC from a single DC source. The new Hybrid Converter is derived from the single switch controlled Boost converter by replacing the controlled switch with voltage source inverter (VSI). This new hybrid converter has the advantages like reduced number of switches as compared with conventional desig...

In this paper a new switching technique for Direct Torque Control (DTC) fault tolerant induction motor drive is presented, if one inverter leg is completely lost due to such abnormal condition, this system modifies the switching table of DTC system using the available stator voltage vectors in two phase mode with Four Switch Three Phase Inverter (FSTPI) topology to track the stator flux referen...