Course Content

This paper presents the development of industrial monitoring system that monitors the environment conditions in an indoor space at remote location using the concept of IoT. In this system, sensors like temperature sensor, humidity sensor and gas sensor are used and data collected from the sensor will be available remotely through webpages and can view the data anywhere in the world and decisions will be taken based upon the measurement. SMS alert will be sent to the specific person in any emergency situation which contains collected values from the sensor. The communication between the system’s components is performed using the existent wireless infrastructure based on the IEEE 802.11 b/g standards.

In this paper a new single-stage transformer less inverter for photovoltaic (PV) application is proposed. Typical PV systems have multi-stage topology in order to perform different functions. These multi-stage inverters suffer from low efficiency and high components count. The proposed inverter is a combination of boost converter and half bridge inverter which can handle voltage boosting as well as feeding ac current to the grid in one stage. The introduced converter is transformer less which increases the overall efficiency and decreases cost, size and weight of the system. This topology has several desirable features like low switching losses, low total harmonic distortion (THD) and simple control technique. In this paper, operation principle, theoretical analysis and design of the proposed topology are discussed. Also, simulation and experimental results of a lOOW inverter are presented to confirm the validity of theoretical analysis.