Usually the main reason of installing the solar photovoltaic system is to produce electricity to be used in different applications. Some people lives in remote locations which are not serviced by the main electric grid, and using solar photovoltaic system for those people is a very reliable and cost effective way of electricity generation, it’s very less expensive than making extensions (installing poles and cables) to get electricity from the nearest main grid power supply.
Electrical power providers are generally providing two different tariff structures, the first is called flat rate structure, in which the price for the purchased kWh is fixed, its same over 24hours/7days. And the other structure called time of use, in which the price for the purchased kWh differs from time to other, there will be off peak price and high peak price. Usually, off peak time is in the night, high peak time is from afternoon to the evening, and the normal time is represented by the rest of the day hours, in some areas, the high peak kWh charges may reach 50 cents per each kWh. Therefore, we must choose a reasonable electricity price according to our own needs.
The inverter is the heart of the solar photovoltaic system, and more than 90% of solar system failures causes is due to inverter malfunction. There are 2 main factors affecting solar inverter selecting; inverter performance and its price.
The solar panel spend its life in rains, hot sun, etc. It works outdoor and exposed to harsh environment in summer and winter. These changes in weather will of course affect the solar internal components and material bonded to each other, there will be chemical changes which will affect not only the solar panel performance, but it will affect its life time, its efficiency and reliability, because these chemical reactions will create new chemical material. Moreover, the elasticity of these internal materials will change with the time pass and affect the tension and stress forces taken place between different parts.
So, the cheap low quality solar panel which uses cheap and low quality materials, and which its manufacturer has not taken into consideration the parameters aforementioned will not withstands/survives much, provides low performance and low service life.
If your building/house is heavily shaded. As the shadow will dramatically reduce the solar system generated output electricity. In your vision you have to take care and consider about the impact of the current shadow and the anticipated shadow comes from trees grow or known renovations and extensions in surrounding buildings, that what we called shadow analysis study. It is an important study assisting us deciding whether the solar system will be a good beneficial investment project that worth to proceed or not. One more thing to note, is that in case of locations subjected to such shadow, its recommended to use micro solar inverter, so you can distribute your solar panels freely and avoid areas with heavy shadow.
Payback period refers to: In how many years our solar system will return back its fixed and running costs we should pay for. Basically, before proceeding in purchasing/installing any kind of solar system and due to their high initial costs, we need to make economical feasibility study to know how to calculate the payback period and whether this solar system will be profitable project or not.
Of course, using solar photovoltaic system will substantially reduce our electricity billsand may eliminate them totally, but we can also reduce electricity bills by reviewing our power consumption to reduce electricity usage and electrical losse. Let us introduce nine tips and approaches to achieve that:
1. Replace your bulbs whether they are incandescent or halogen to led lights, as this will achieve 75% energy consumption reduction.
2. Switch off appliances which are on standby mode and not actually used like old air conditioner which pulls large power in standby and like television & mobile charger, etc. All should be switched off when we do not use them.
The electricity consumption in homes differs based on home size, number of resides, home wall insulation, heating/cooling system presence/ capacities, number/ type of electrical appliances, and of course the life style. So, large homes with pools, and air conditioning units will exhibit high consumption with high electricity bill more than small homes, and always the home owners are looking forward to reduce the consumption/bills which is critical in large homes. In fact, there will be 2 main opportunities to reduce electricity consumptions and save your money.
Correct choice of the solar company that will supply the solar system components is the base, success crucial factor and the first important task you should take care about. You need to find out more details about the solar company and solar components they provide before dealing with a certain. Here below, we shall summarize the clarifications you need to get, and better if it can be written signed/stamped clarifications from the best solar company:
Most of solar companies in the market can promise us about their solar panels quality, warranty, and after sales support… etc. But how can we trust? That is the question, which is difficulty answered. But generally, at least we need to check the supplier who will be around for along term, and this can be determined from good reputation, high quality, high experience and commitment.
In the market you will find many numbers of companies that provide solar components, and for each solar professional, you can take advice from, his certain recommended products, and each solar professional will provide very convincing reasons standing behind his choice. So which opinion you can trust, and which product is really the best?
Electrical power providers are generally providing two different tariff structures, the first is called flat rate structure, in which the price for the purchased kWh is fixed, its same over 24hours/7days. And the other structure called time of use, in which the price for the purchased kWh differs from time to other, there will be off peak price and high peak price. Usually, off peak time is in the night, high peak time is from afternoon to the evening, and the normal time is represented by the rest of the day hours, in some areas, the high peak kWh charges may reach 50 cents per each kWh.
As to the photovoltaic grid-tie inverter, the input end is connected to the photovoltaic component and the output end is connected to the power grid. The component has only positive and negative poles, and it is not easy to wire incorrectly. Since the component is a certain distance away from the inverter, it is required to add an extension cable. The correct connection method is that the photovoltaic connector has a female connector on one side and a male connector on the other side, so that the positive and negative directions will not change. However, some green hands will also make the two connectors of the extension cable the same. If the power inverter is connected, the positive and negative poles will be reversed.
The efficiency of the power inverter is directly related to the generated energy of the system, so it is an important indicator that customers care much about. It is of great importance to increase the conversion efficiency of the power inverter. The only way to improve the efficiency of power inverters is to reduce the losses. The main losses of inverters come from IGBT, MOSFET and other power switch tubes, as well as magnetic devices such as transformers and inductors, which is related to the current, voltage and the process adopted by the selected materials.
Today we'll introduce how to make a power inverter. This homemade inverter has simple circuit, low cost, easy maintain, and high efficiency. And it can be made by anyone who has a little practical ability. Although this DIY inverter does not have the same high-end and complex switching power supply integrated circuit as high-quality power inverters on the market, as well as field effect power amplification, its effectiveness is not inferior to others.
Car inverter is a device that can convert 12V or 24V DC energy from car battery into 220V or 110V AC power, which is the same as the grid power for household appliances. With the car inverter, you can connect the cigarette lighter or car storage batteries to run the electronics, appliances or various tools, which can greatly broaden the range of entertainment and work in the car. How to choose a right inverter for your car?