Recent Advances in Electrical & Electronic Engineering - Volume 14, Issue 2, 2021

Background: The growth of renewable energy sources is increasing in the world to meet the energy consumption demand. The major problem after the integration of renewable sources is islanding. The islanding is not safe for equipment and customers. As per Distributed Generation (DG) interconnection standards, it should be detected within 2 seconds. Objective: This paper presents the review of various islanding detecti Read More

Brain-computer Interface (BCI) systems, usually using signals taken from users' brain through electroencephalography (EEG), control various devices around and provide the user's command by interacting. Improving the quality of life of people with disabilities is the main goal of BCI systems. The importance of BCI-based smart home systems is further increasing as a smart home system directly affects the life of a di Read More

Background: Electricity price forecasting is still a challenging issue as it plays an essential role in balancing electricity generation and consumption. Probabilistic electricity price forecasting not only provides deterministic price forecasts but also effectively quantifies the uncertainty of electricity price. Methods: This paper introduces a new short-term electricity price forecasting approach called SASVQR, which is based on support Read More

Background: Until now, a variety of proportional integral controllers and local controllers and predictive controller models have been used to stabilize VSC-HVDC transmission lines. One of the disadvantages of a linear model predictive control is that it is difficult and time consuming to adjust it for times when the disturbance entering the system is sudden. The goal is to monitor and take appropriate action to balance po Read More

Background: In a hybrid multi-infeed direct current (HMIDC) system, the interaction between the AC and DC systems has an influence on the damping characteristics of the system, while a doubly-fed induction generator (DFIG) based wind turbine connected to the grid complicates the coupling between AC and DC. Objective: Based on the basic principles of wind power generation and low-frequency oscillation (LFO), a D Read More

Background: In multi-level inverters (MLI), as the number of levels increases, there is a proportionate increase in the count of the semiconductor devices that are employed. Methods: An asymmetrical multi-level inverter topology using a bidirectional switch is presented, which employs a lesser number of power electronic devices to produce fifteen levels at the output voltage. The Nearest Level Modulation (NLM) technique is us Read More

Background: The pulverizing system is an important part of the coal-fired unit; the safety and efficient operation of which are essential to improve the economy of the units. Due to the needs of industrial development, the pulverizing system has become increasingly complex, and it is challenging to design the optimal controllers based on traditional model-based methods. Objective: This paper proposes an improved int Read More

Background: Conventional micro-grids operate autonomously in islanded mode but they always rely on the utility grid for BUS voltage support and power balance in the grid-connected mode. This results in non-seamless mode switching, alternating operation strategy and power exchange fluctuation problems. Methods: An AC/DC/AC converter is utilized as the interface between the micro-grid and the utility grid. This enable Read More

Background: Ultrasound is widely used in the applications of underwater imaging. Capacitive micromachined ultrasonic transducer (CMUT) is a promising candidate for the traditional piezoelectric ultrasonic transducer. In underwater ultrasound imaging, better resolutions can be achieved with a higher frequency ultrasound. Therefore, a CMUT array for high-frequency ultrasound imaging is proposed in this work. Methods: Read More

Background: Aiming at the problems of color distortion, low clarity, and poor visibility of underwater images caused by a complex underwater environment, a wavelet fusion method, UIPWF, for underwater image enhancement is proposed. Methods: First of all, an improved NCB color balance method is designed to identify and cut the abnormal pixels and balance the color of R, G, and B channels by an affine transform Read More

The last paragraph on page 149 is revised as follows: ACKNOWLEDGEMENTS The authors would like to extend their gratitude and sincere thanks to the IKG Punjab Technical University, Kapurthala for giving the opportunity to carry out the present research work. The original paragraph provided is mentioned below: ACKNOWLEDGEMENTS Declared none.