Due to wind data is essential for documenting eddies and protecting wind turbines, wind turbines need accurate wind operating information in order to operate safely. 300W wind turbine with low starting wind speed and low running vibration. When the anemometer speed does not change rapidly, such as when the bearing belt is faulty, the eddy current cannot be accurately measured. The turbine control system adjusts the blade spacing and rotor speed separately according to the degree of turbulence in order to protect the blades and drive mechanism from fatigue damage caused by improper use of rotating blades.
Safety rules will guide in making our whole solar system to be well cabled together and having the appropriate and correct size protection devices/fuses, in addition to good labeling and the existing of the operating manuals for all solar system components according to international and local standards.
Net Metering is one of the dominant arrangements the electricity company dealing us in billing when we install our new solar photovoltaic system. Under this arrangement, the electricity generated from the solar inverters and the solar photovoltaic system will go to feed our home (electrical loads) at first, and then the additional excess generated electricity which is not required by our home electrical appliances/loads will be exported to the power grid.
In some kind of solar photo voltaic system called Off Grid system, your solar system will incorporate batteries that can feed your loads with electricity in case of low sun radiation and night time. But such batteries add a significant cost to your solar system, so it is usually recommended to be used in remote areas in where there is No regular electricity supply exists.
The energy metering system is an important component in our solar system, because it tells us how much electricity our solar system generates, how much electricity our electrical appliances and equipment are using and the amount of electricity we are still buying for the power utility or export to the power utility after connecting our solar system to the power grid.
There are many different solar photo-voltaic monitoring systems in the market, and the basic element which doing such monitoring is the solar inverter itself. So, the solar inverter usually comes with some monitoring levels starting from simple convenient level to sophisticated level.
The solar inverter is the main crucial part of our solar photovoltaic system, so we have to take care about all details related to it, like mainly choosing the high quality brand when purchasing, and proper technical installation, etc. One of the important details is: Should we install it inside or outside the home? Where we should install it in our home? And what is the best place?
Actually there are three main types of solar panel in the market, and they differ between each other mainly in 3 parameters: Efficiency, capability to withstand high environment temperature, and capability to deal with diffused sun light.
After installing our new solar photovoltaic system, our electricity consumption from the electric grid may be changed, resulting in new / modified electricity consumption pattern. Also, as a result we may be subjected to a new metering regulations according to our country rules. The question is: Will there be a tariff change due to our new solar system installation? The answer for this question will be provided by your electricity retailer. Moreover, we have to get the answer for this question even before installing our solar panel power inverter, so we can weigh up the dis-advantages and advantages of the new installation before making our decision.
When Solar System company/installer design our solar photo-voltaic array, they specify two standard slopes: The first is the orientation which means the solar panels face direction, whether it will be to North, South, East or West, and the second is tilt angle which means the solar panel angel with horizontal surface "roof angle". Ideally, solar panels should face the south, and the tilt angle should equal to the solar system location latitude, so we can get maximum electricity production from our solar phot-voltaic system.
In grid tie solar photovoltaic system in which the solar inverter output is connected to the AC power grid, there are 2 ways of electrical energy metering scheme: gross metering and net metering. And here we shall discuss the difference in between.
The solar panel efficiency is the ability of the panel to convert sunlight power to usable electrical power, for example, if the solar panel efficiency is 16%, that means only 16% of the sun light hits the panel will be converted to usable electricity. Actually in the market, the average solar panels efficiency ratings vary in the range 15% up to 20%.
We can confirm that solar panel size will be indicated based on the solar system application available space installation area, as if you have a small area in which you will install the solar system, then small size solar panel with high efficiency will be considered which will cost a bit higher, but for large areas, we can sacrifice with the high efficiency factor, and buy larger size solar panel with lower efficiency and of course it will be price cheaper.
There are many advantages of micro inverter over central inverter, the first advantage is that micro inverter is performing much better in case of shading, as if there will be a partial shading on a part of our solar system due to chimneys or trees, the overall output power of the string will not be affected, but only the shaded solar panel output power will be affected, while in central inverter the overall output power of the string will be affected, and there will be much power loss. The second advantage is the capability of micro inverter to track maximum power point for each connected solar panel, resulting in high efficiency and output power from the solar system.
Monitoring the solar Photo-Voltaic system is a very important matter because it shows you how much electricity saving you got from your solar system, in addition, it assists you knowing if the system is running properly producing its rated power or it may have a fault, so you can take a rapid troubleshooting action.
Wind Turbine vs. Windmill
Monday, November 15, 2021
There are significant differences between wind turbines and windmills in terms of definition, function, structure and application efficiency. Wind turbines are one of the important ways to generate modern clean energy. They have broad application prospects and important strategic significance; while windmills are one of the important inventions of wind energy in human history, witnessing the progress and development of human civilization. Together, they constitute an important chapter in human energy conversion using wind energy. Although wind turbines and windmills, as devices that use wind energy for energy conversion, have certain similarities, they have significant differences in many aspects. The following is a detailed comparison of the two.
Wind energy is one of the most promising renewable energy sources in the world today. Therefore, how to increase the power generation of downstream wind turbines is one of the most important research topics in recent years. Recently, extensive experimental and numerical studies have been conducted to examine aerodynamics of wind turbines and wake interference among the multiple wind turbines. In order to gain an in-depth understanding of the basic physics of higher total power generation and better durability of wind turbines.
People have used the power of wind for thousands of years. Wind has moved boats along the Nile River, pumped water and milled grain, supported food production and much more. Today, the kinetic energy and power of natural air flows called wind are harnessed at massive scale to create electricity. A single, modern-day offshore wind turbine can generate more than 8 megawatts of energy, enough to cleanly power nearly six homes for a year. Onshore wind farms generate hundreds of megawatts, making wind energy one of the most cost-effective, clean and readily available energy sources on the planet.
Types of Wind Energy
Tuesday, October 12, 2021
The wind is a renewable energy source caused by uneven heating on the earth's surfaces by the sun. Wind power refers to converting the kinetic energy of wind into electricity. It is a kind of clean and pollution-free renewable energy, that has been used by people in the early times, mainly through windmills to pump water, grind surfaces, and so on. Using wind power to generate electricity is environmentally friendly, and the wind energy accumulation is huge.
The effect of light on the electrical properties of certain materials has been known for more than 150 years. This is called the photoelectric effect. They convert light directly into electricity. Most photovoltaic cells are made from silicon, the core element of all modern electronics. What makes silicon special is its electron arrangement: it has four of the eight possible electrons in its outermost shell. That means it forms perfect covalent bonds with four other silicon atoms to form a lattice structure.
