Design A Control Strategy For A Voltage Sourced Inverter

The researcher would like to thank the following people who help and give guidance to make this project

The power system is installed within 5 electrical substations with emergency equipment, generators, medium voltage panels and transformers.This installation makes the power distribution to Petrobras Headquarters UOBS, which currently controls its offshore operation units (oil platform).The power system is divided into the following subsystems:

I take this opportunity to express my sincere thanks and deep gratitude to all those people who extended their whole hearted co-operation and have helped me in completing this project successfully.

Summary: At present, most distributed renewable energy systems produce direct current (DC) electricity which is then inverted to alternating current (AC) and fed into the electric grid. Simultaneously, many modern building loads and storage systems use rectifiers to convert AC grid electricity to DC for use at the load or battery. Onsite use of renewable energy production therefore requires two energy conversions: DC/AC at the point of generation and AC/DC at the load. The Bosch DC Building Scale Microgrid Platform (DCBMP) offers significant benefits relative to conventional AC grid systems by distributing as much solar power as possible to DC loads/storage, and then inverting only the excess power to AC for AC loads and export to the grid. The DCBMP maximizes the utilization of solar energy on-site, smooths the volatility of the PV output, increases the load and storage efficiencies and minimizes dependence on grid-based electricity. The proposal incorporates long-life (20-25 years), commercially ready technology, increasing energy efficiency and improving energy security. These features are provided at a low up-front investment when compared to conventional AC-based systems, enabling a levelized cost of electricity (LCOE) less than $0.14/kWh by 2020 for behind-the-meter PV and storage systems and a lower total cost of ownership for the DC loads and DC resources as compared to other approaches, while providing export power to the utility grid through smart inverter

At last we would like to thank all those people who have helped or assisted us in any way, directly or indirectly to make our project successful. No words can express the deep gratitude for all of you.

Optimal integration of renewable energy resources in data centers with behind the meter renewable generator

ABSTRACT: Nowadays every energy system depends on conventional energy sources but the low availability and high initial cost usage of renewable energy is used to generate the electricity but there are many renewable energy sources but in that wind energy is considered and proved as one of the best reliable energy which is capable for generating electricity by lower costs and this come under wind energy conversion and there are two types they are stand-alone wind energy and grid connected as wind flow by nature is irregular so storage systems are used as backup for continuous flow of energy and the sustainability of 4 KW hybrid wind and battery system is investigated to reach the requirements of 3KW stand-alone dc load in a telecom station. The charging and discharging of battery is controlled by ensuring a charge control of battery bank based on turbine maximum power tracking and charging state of battery is developed. The pitch control is used as assurance for mechanical safety for WECS. The Control schemes are tested by using MATLAB.

AC electrical energy in grid interactive PV system. To achieve direct medium-voltage which is present at grid without using bulky medium-voltage transformer ,cascaded multilevel converters are attracting more and

The growing concern about the impact of CO2 and the anxiety on the effect of using fossil fuels based power generation technology on the environment, in recent years, has made the researchers to focusing on the renewable energy based clean power generation techniques to secure the environment from carbon effect. Among the development of renewable energy based power generation techniques, the solar power generation has a major role in clean power generation. The sunlight is free of cost and everlasting energy sources, but the drawback of this method is that generation of electricity is only possible during the sunshine. In PV system, the DC-DC power converters are used to change the output voltage from one level to another level [25-27]. Typically, the DC-DC converter is connected between the panel and the load, sequentially to extract the available power from the panel using tracking methods. In this work, Boost converters and Super lift boost converters [1] are used to extract the maximum power from the panel and two converters diagram is shown in Figure 1a and Figure 1b respectively.

This project has been a good learning experience on behalf of me and I would love to specify my sincere feeling to all or any of those who guided me throughout the project and appreciate suggestions of those individuals without whom this project wouldn’t be completed with success.

In the traditional distribution network, the systems are designed and controlled autonomously. Hence a fault at a system will have serious problem and need immediate rectification. But, rectification of these problems is very difficult. More due to the increase in prices of fossil fuel which are the main cause for generating electricity. Thus, centralized control and integrating their functions is a crucial problem faced in the traditional distribution network. To overcome these issues, there comes Information and communication Technology (ICT) to integrate all the important elements in a distribution system. This develops an environment at distribution level, which is controlled and integrated called “smart grid” which bring up to the date where the electricity generated is transported, distributed by optimizing the system’s economy and the improving the system’s capability to spring back into shape.

Subsequently, the usage of VSIH(2) and VSIL(2) allows not an optimal from the point of inverter losses, when the desired output voltage can be synthesized with just one VSIH(2) or VSIL(2). Therefore, inverters VSIH(1) can propagate with just VSIH(2) and VSIL(2) set to zero voltage output or vice versa providing exactly the same operating characteristics. Now, the

I also want to thank my supervisor and the team for their motivation and support during the program. They helped me to complete this work successfully.

I. INTRODUCTION: The power system is an interconnection of generating units to load centres through high voltage electric transmission lines and in general is mechanically controlled. It can be divided into three subsystems: generation, transmission and distribution subsystems. In order to provide cheaper electricity the

Abstract: In this paper we present a load measurement scheme for home energy management system with energy demand management. The proposed system will have control of various appliances that are available in the home. It manages household loads according to their predefined priority and guarantees the total household power consumption below certain levels. The home energy management system will receive the demand response from the utility side. The goal of the system is to encourage the consumer to use less energy during peak hours or to move the time of energy use to off peak times such as nighttime and weekends. Thus the high peak-to-average ratio (PAR) of power will be avoided and also we adopt real time pricing. The utility company use real time dynamic pricing to coordinate demand responses to the benefit of the overall system. Hence for this purpose we need to measure the power consumed by the various appliances that are available in the home.