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The tilt and azimuth of a solar panel greatly influence the energy yield of the overall system. The same panel, at the same installation site, can have different azimuth or tilt. This is a topic we are often asked about so in this Solis seminar, we explore the subject further.

In some places of the world, the power grid can be due to unstable supply or planned shutdowns via programs such as“load shedding” and can last an unknown amount of time. During this time, a standard grid-connected solar PV system will also shut down. How can we ensure that a solar PV system continues to work during these temporary, but often lengthy, power outages? This Solis seminar brings you solar PV + diesel generator hybrid system solutions and a discussion of related issues.

In some special countries and regions, the grid structure involves split-phase grid, but if there is no split-phase inverter when installing PV system, can the conventional single-phase inverter be connected to the grid? What problems should we pay attention to? We will share them with you in this Solis seminar.

PID effect, micro-cracks, and hot spots are three important factors that can affect the performance of crystalline silicon photovoltaic modules. Among them, PID effect and hot spots usually appear after installation and operation of PV panels for a period of time. Micro-cracks are a common problem associated with solar photovoltaic modules and they are difficult to detect with the eyes. In view of these potentially hidden problems, how we identify and rectify them is important. In the last Solis Seminar, we introduced the problem of PID effect and its solutions. In this seminar, we will share with you the causes of cell micro-cracks, how to identify them and ultimately prevent them.

As the running time of PV plants increase, the DC line slowly ages, and the waterproof performance of the DC terminal (MC4 terminal) deteriorates. As a result, the insulation impedance of the DC line is too low, or the positive and negative terminals are short circuited to the ground. Either way, major failures may occur, affecting the generation of electricity. It may be difficult for inexperienced power plant O&M personnel to exclude grounding PV string or to find the point of grounding PV string. This Solis seminar will share a method of locating ground fault points to improve troubleshooting speed and cut down on manpower.

The Solis EPM accessory, as an energy control device, has an enormously powerful function. In addition to controlling the energy output of the PV system, it can also be used as a reactive power adjustment and power factor compensation device. During installation we hear common questions being asked so in this episode of Solis Seminar we’ve collated the most frequently asked questions and answered them for you.

Winter is well and truly on its way for the northern hemisphere with temperatures beginning to fall and already reaching the freezing point in some regions. According to forecasts there will be prolonged periods of icy and snowy weather in Europe on its way. So, what are the specific effects of winter on the operation of a solar PV system, and how should we carry out effective operation and maintenance (O&M) of the PV plant in cold weather?

In some photovoltaic power plant projects, ordinary cables have been used in replacement of dedicated photovoltaic cables, which can provide lower installation costs. This approach puts the entire solar PV system at risk and is dangerous.