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
Transmission expansion planning in India has moved from earlier generation evacuation system planning to integrate system planning. With massive capacity addition coupled with deregulation of power sector has thrown huge challenges for transporting the power. With power exchanges in India in their infancy and thrust towards renewable energy resources India provides a challenging opportunity for transmission expansion planning. In this paper we have reviewed two of most commonly used models plexos and SDDP and their suitability of application for Indian power system.
In this paper, a combined low cost high efficiency converter and maximum peak power tracker has been presented. The maximum power point tracker system consists of DC-DC boost converter and PWM. PWM generates high quality sinusoidal line current. The suitable duty ratio for the boost converter will force the PV to work around the optimum voltage. The power generated by a PV cell depends on the operating voltage of the array, its voltage-current and voltage-power characteristic curves specify a unique operating point at which maximum possible power is delivered and the array is operated at its highest efficiency. One of the problems in designing efficient PV systems is to track the maximum power operating point for varying solar irradiance levels and ambient conditions. The output power produced by the PV panel is non-linear and changes with the solar irradiation and the ambient temperature. Therefore, a maximum power point tracking controller is needed to optimize the photovoltaic output power. A dc-dc converter is used to match the PV system to the load and to operate solar array at maximum power point .The perturbation and observation algorithm which is often employed to track the maximum power point This algorithm is selected due to its ability to withstand against any parameter variation and having a very high efficiency. As a result, by variation of the temperature and the insolation, the algorithm still managed to track the MPP successfully.
In this paper presents a single-phase five-level photo- voltaic (PV) inverter topology for grid-connected system. The photo-voltaic arrays are connected to five-level inverter through the DC-DC boost converter. By implementing maximum power point tracking algorithm are producing more power from PV array. The DC power from the PV array is boosted by using the DC-DC boost converter. The boosted DC supply is applied to PWM inverter, which is controlled by PID controller. The output of inverter is AC supply, it is connected to grid. A digital proportional—integral—derivative current control algorithm is implemented in MATLAB version7.5. For dynamic performance the grid current will be almost sinusoidal. The total harmonic distortion produced by the inverter will be less. The results are compared with the digital proportional—integral current control algorithm in single-phase five-level photo- voltaic inverter.
The interline power flow controller is an unique capability to control simultaneously real and reactive power flows on a transmission line as well as to regulate voltage at the bus where it is connected. In this paper we are analysis the 6 bus connected IPFC system in uncompensated and compensated conditions. The power profiles at various buses were discussed. This device creates a tremendous quality impact on power system stability. Simulation results show that the proposed control strategy is very effective in maintaining stability.
A new method for detection of power quality disturbance is proposed: first, the original signals are de-noised by the wavelet transform; second, the beginning and ending time of the disturbance can be detected in time, third, determining the cause of power quality disturbances using various approaches such as Multi Resolution Analysis (MRA) or Discrete Wavelet Transforms (DWT) In this paper, wavelet transform is proposed to identify the power quality disturbance at its instance of occurrence. Power quality disturbances like sag, swell, interruption, DC offset, frequency variation and harmonics are considered and are decomposed up to 4 levels using Db4 wavelet. For some disturbances it is sufficient to have only second or third level of decomposition. The exact location of the disturbance can also be found on the time scale. The application to a case study shows that this method is fast, sensitive, and practical for detection and identification of power quality disturbance.
The paper presents the dynamic model of doubly fed induction generator (DFIG) and its control structures used for variable speed wind energy conversion (WEC) system. DFIG is often a natural choice for electricity generation from renewable energy source. The stator flux oriented vector control algorithm is implemented. The results show that how such a control strategy offers the possibility of controlling the power generated by the DFIG.
In this paper, a new type of single Phase static compensator (STATCOM) for low rating used in customer side is proposed. This new STATCOM is constructed by cascading a full-bridge (H Bridge) voltage-source inverter (VSI’s) to the point of common coupling (PCC.) A so-called sinusoidal pulse width modulation (SPWM) unipolar voltage switching scheme is applied to control the switching devices of each VSI. A new control strategy is adopted for compensating the harmonics and reactive current required by the load. The proposed STATCOM has the advantage of a fewer number of VSI’s, the VSI’s being identical and extremely fast in response to reactive power change and the control strategy adopted shows a good response.
Automatic speaker recognition is a field of study attributed in identifying a person from a spoken phrase. It is widely used in biometric security system, phone banking and other similar applications. This paper presents a development of a Matlab based text dependent speaker recognition system. The model used to derive a mathematical representation of the speech signal. Mel Frequency Cepstrum Coefficient Feature extraction method is used to extract a speaker’s discriminative features from the mathematical representation of the speech signal. After that a feature matching method known as Vector Quantization is implemented using the LBG Algorithm. Feature matching is carried out in order to cluster the speech features into groups of specific sound classes. Finally analysis is carried out to identify parameter values that could be used to increase the accuracy of the system. In this paper we have studied the effect of recording environment on the accuracy of speaker identification.