Speed Control of Parallel Connected DSIM Fed by Six Phase Inverter with IFOC Strategy Using ANFIS

This paper describe the presentation of an IM for high load and high-power applications, this kind of applications the motor have a complex coupling between the field and torque. This can be achieve with assist of Indirect Field Oriented Control (IFOC) and parallel connection of two motors. The benefit is that parallel connection can provide the decoupled control of flux and torque for each motor and their concert in different operating environments. The Speed control of two Double Star Induction Motors working in parallel configuration with IFOC using a Fuzzy Logic Controller (FLC) and Adaptive Neuro Fuzzy Inference (ANFIS) controller is investigate in different operating environments. The two motors are connected in parallel at the output of a single six-phase PWM based inverter fed from a DC source. Performance of the projected method under load disturbances is studied through simulation using a MATLAB and evaluation of speed response of two controllers is analyzed. &nbsp

Comparison of Speed Controlling Techniques of Field-Oriented Controlled Induction Motor Drives

ABSTRACT: Various control strategies of controlling inverter fed Induction Motor Drives have proved good steady state performance but poor dynamic performance. In order to achieve good dynamic performance and to meet the preferences set by DC drives variable speed AC Drives came into existence. This paper presents an intelligent speed controller for an indirect field oriented controlled induction motor drives. Here by separating the current produced by the stator into flux and torque producing components of an induction motor, indirect field oriented control is implemented. SVM based indirect vector controlled induction motor drive with PI controller is first developed and replaced by employing fuzzy controller via an intelligence-based Fuzzy PI controller in order to achieve better dynamic response. By considering the behaviour of the FLC the speed, torque and stator voltage responses were observed and compared with the PI controller using MATLAB/Simulink. KEYWORDS: PI controller, FLC, indirect vector control, modelling of induction motor I.INTRODUCTION Today's sophisticated industrial drives are the result of the far research and improvement during last decade. The hence so-called vector control or field oriented control (FOC) was one of the most important inventions in AC motor drives which opened the gate for the researchers to take the aim for ever enhancing control of performance. And by other aspects, there are many process control benefits that might be provided by adjustable speed drive such as smoother operation, acceleration control, different operating speeds, control of torque etc., In the past decades, Induction and synchronous machines were used for constant speed applications. This was mainly because of unavailability of variable frequency supply. The advancement in electric drive systems is related to the development of power semiconductor devices. The introduction of Silicon-controlled rectifier in 1957 initiated further more development in electrical drive systems. In early 1960's, the improvement in fabrication of BJT along with the PWM technique has significantly contributed to achieve improvement in AC drives. But required precise torque control is not obtained and was still dominated by DC drives. This high performance torque control was achieved with the invention of Field Oriented Control or Vector control in 1972', which was developed by Prof. Blashke in his publications. Vector control of induction motors allows the decouple analysis where the torque and flux components are independently controlled just as in Dc motor. In vector control scheme, the stator phaser currents are resolved into two components and with this individual torque and flux control is possibl

Life Cycle Analysis of Thin-Film Photovoltaic Thermal Systems for Different Tropical Regions

Different energy solutions are required to satisfy the energy demand of the world’s ever-growing population. Photovoltaic Thermal systems (PVT) could propose resolutions to tackle real-time issues regarding power generation. Life Cycle Analysis (LCA) is performed to compare the environmental impact and measure the energy across different PVT modules consisting of a-Si, CdTe, and CIS thin-film solar cells. The authors performed LCA to calculate the energy payback time (EPBT) and life-cycle CO2 emissions of residential rooftop and open-field PVT systems. The primary energy needed to produce thin-film PVT modules of 1 m2 cell area was considered in the present life cycle analysis studies operated using water as the working fluid. The annual net electrical energy savings at various Indian weather conditions, such as New Delhi, Jodhpur, and Ladakh, have been calculated. For the thin-film PVT systems, the calculated values of annual energy yield for three locations with average solar radiation levels and peak sun hours in the range of 600–1000 W/m2 and 6–8 h were reported. Results show that the CO2 emissions for rooftop installation of CdTe and CIS are around 200 and 156 kg/annually, which is lower than the open field installation of the same, where CO2 emissions were found to be 295 and 250 kg/year

Life Cycle Analysis of Thin-Film Photovoltaic Thermal Systems for Different Tropical Regions

Different energy solutions are required to satisfy the energy demand of the world’s ever-growing population. Photovoltaic Thermal systems (PVT) could propose resolutions to tackle real-time issues regarding power generation. Life Cycle Analysis (LCA) is performed to compare the environmental impact and measure the energy across different PVT modules consisting of a-Si, CdTe, and CIS thin-film solar cells. The authors performed LCA to calculate the energy payback time (EPBT) and life-cycle CO2 emissions of residential rooftop and open-field PVT systems. The primary energy needed to produce thin-film PVT modules of 1 m2 cell area was considered in the present life cycle analysis studies operated using water as the working fluid. The annual net electrical energy savings at various Indian weather conditions, such as New Delhi, Jodhpur, and Ladakh, have been calculated. For the thin-film PVT systems, the calculated values of annual energy yield for three locations with average solar radiation levels and peak sun hours in the range of 600–1000 W/m2 and 6–8 h were reported. Results show that the CO2 emissions for rooftop installation of CdTe and CIS are around 200 and 156 kg/annually, which is lower than the open field installation of the same, where CO2 emissions were found to be 295 and 250 kg/year