Design and Analysis of Improved Mountain Gazelle Optimization Tuned PID and FOPID Controllers for PV MPPT System
Performance Analysis of Power System Dynamics with Facts Controllers: Optimal Placement and Impact of SSSC and STATCOM
Empowering Hybrid EVS with Bidirectional DC -DC Converter for Seamless V2G and G2V Integration
Solar Wireless Charging of Battery in Electrical Vehicle
Advancements in Multilevel Inverter Technologies for Photovoltaic-Z-Source Based EV Applications: A Comprehensive Analysis and Future Directions
Design and Development Of Paddy Cutter Using Solar Energy
Design Of Double-Input DC-DC Converter (DIC) Solar PV-Battery Hybrid Power System
Comparison of Harmonics, THD and Temperature Analysis of 3-Phase Induction Motor with Normal Inverter Drive and 5-Level DCMI Drive
Application of Whale Optimization Algorithm for Distribution Feeder Reconfiguration
Detection and Classification of Single Line to Ground Boundary Faults in a 138 kV Six Phase Transmission Line using Hilbert Huang Transform
The Modeling of Analogue Systems through an Object-Oriented Design Method
Circuit Design Techniques for Electromagnetic Compliance
A Technological Forecast for Growth in Solid-State Commercial Lighting using LED Devices
Testing of Analogue Design Rules Using a Digital Interface
Simulation and Transient Analysis of PWM Inverter Fed Squirrel Cage Induction Motor Drives
The electric locomotives of Indian Railways currently use Gate Turn-Off Thyristors for traction drive systems. Though they are fast switching devices, they produce lot of harmonic ripples in the output voltages and currents. The snubber circuits of Gate Turn-Off Thyristors are also bulky. Comparatively, Insulated Gate Bipolar Transistors produce less harmonic ripples and also reliable fast switching devices capable of handling voltages and currents of the range 5kV and 1kA respectively. Research has also proved that, Insulated Gate Bi-Polar Transistors are also an efficient switching devices in high voltage/power applications like electric traction. The simulation studies of performance of the Squirrel Cage induction motors with Gate Turn-off Thyristors/Insulated Gate Bi-Polar Transistor as switching devices are presented in this paper.
This paper traces the basic concepts behind the predictive control strategy used in power converters and drives. Wide research on predictive control has been increasing day-by-day. With the availability of new digital control techniques, various schemes has been proposed. Predictive control scheme presents several advantages over other control schemes that makes it capable for various applications in the field of power electronics and drives i.e. inclusion of constraints and nonlinearities. A classification of predictive control scheme is presented and each scheme is described along with its application. This paper reflects the robustness as well as flexibility of predictive control scheme. Predictive control scheme has the capability to advance the performance of future energy processing and control systems.
Due to recent advancements in the field of power electronics and power semiconductor devices, a long known topology is back in the focus of research. The matrix converter topology has been known for more than three decades and yet not many products using the matrix converter are currently available. This converter has several attractive features that have been investigated in the last two decades. In the last few years, an increase in research work has been observed, bringing this topology closer to the industrial application. Matrix converters are direct AC to AC power converter topology that can generate required amplitude and frequency of AC sinusoidal wave from conventional AC source. It is a forced commutated converter which uses an array of controlled bi-directional switches as the main power elements to create a variable output voltage system with unrestricted frequency. It operates at unity power factor and is capable of regeneration. Often referred to as an all-silicon solution as no DC-link capacitors are required, the matrix converter provides inherent bidirectional power flow, sinusoidal input and output current, power factor control, and minimal energy storage requirements. This paper presents development of this converter, starting with a brief historical review and topologies used in matrix converter.
This review paper is based on space vector based hysteresis current control in three phase PWM converter. In hysteresis current control technique, two, three or four level hysteresis comparator are used, which selects the appropriate inverter output voltage vectors by their switching phenomenon of vector based HCC, and it is used to control the current vector by keeping the current error vector in tolerance region. Through which the load gets desirable output current voltage. By keeping the zero phase difference between output current and voltage, acquires a high power factor by HCC voltage vector and this HCC voltage vector have some advantages over conventional HCC which are not to have interphase dependency and also maintaining constant modulation frequency or also reducing switching frequency. By this HCC, increase the system steady state performance and reducing dynamic response.
The problem of voltage deviation and power loss was mostly addressed in Distribution Systems (DS) due to the usage of non linear loads. Some or all the customers use these non-linear loads which make the operation of the DS in ill-condition. Network reconfiguration, coordinate planning, and capacitor placements are few methods which are used for improving the voltage profile and reducing the losses. A highly effective reliable generation and transmission system may still result in poor energy supply to the customers if the distribution system is operated unreliable. Planning and operation of DS requires quantitative reliability assessment. DS can be operated reliable by accommodating a small scale decentralized Distribution Generation (DG) in a system, by which the losses in the system was reduced and voltage profile was improved predominantly. Placement of DG in DS will improve the system performance, voltage profile, provides continuity of supply to the customers with reduced losses. DS reliability can be evaluated by load point based indices Average System Interruption Frequency Index (ASIFI) and Average System Interruption Duration Index (ASIDI). These reliability indices are needed to be evaluated before and after DG placement to analyze the system performance. A case study was done on the 11 kV Sodium feeder before and after DG placement to analyze the system performance and reliability indices are evaluated.