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solar inverter

How Long Can Solar Battery Last?
Batteries life span is defined as the time period they are useful before they can no longer valid to be recharged or even hold a charge. We usually measure the batteries life span in terms of cycles or certain time limit in years or days or hours. Battery cycle refers to the number of times they can be discharge and re-charged again.
How Many Batteries Needed in Solar System?
We have to well know and understand the amount of energy that batteries will be able to store, so we can choose the solar panels that will be able to charge such batteries in a suitable rate, based on our usage pattern, or in other word, based on our load pattern. In this article, Inverter.com will introduce how many batteries are needed in a solar system.
What is PV Power?
The electricity produced by PV modules is direct current, which can be converted into alternating current by inverters and then used, or all of it can be delivered to the public grid. From another point of view, the electricity generated by the PV power generation system can be used immediately, or the electricity can be stored in storage devices such as batteries and released for use at any time as needed.
Hybrid Solar Inverter Basics: Introduction, Functions and Advantages
Hybrid solar inverters are a new solar technology that combines the benefits of traditional solar inverters and the flexibility of battery inverters into a single device. Hybrid inverters are an emerging solution for homeowners looking to install a solar power system that has room for future upgrades, including a battery storage system.
What Factors will Affect the Solar Inverter Life?
As the core of the power generation system, the solar inverter's life directly affects the normal operation of an entire power station. The life of the solar inverter has become a special concern for everyone. So what are the factors that directly affect the life of solar inverters? Let's take a deep dive into the factors that directly affect the life of a solar inverter in terms of component life, design and installation overall.
Failure Analysis of Solar Inverter
Low insulation resistance Unplug all the strings on the input side of the solar inverter, and then connect them one by one. Use the function of the solar inverter to start up to detect the insulation resistance to detect the faulty strings. After finding the faulty strings, check whether the DC connectors are flooded with short-circuit brackets. Or burn the short-circuit bracket, and also check whether the component itself has black spots on the edge to burn, causing the component to leak to the ground grid through the frame.
Heat Dissipation Methods of Solar Inverter
The solar power inverter is the core equipment of the photovoltaic system. Its main function is to convert the direct current from the photovoltaic modules into alternating current that meets the requirements of the grid. As a power electronic device, inverters, like all electronic products, face challenges brought about by temperature. In all electronic product failure cases, up to 55% of them are caused by temperature. The electronic components inside the inverter are also very sensitive to temperature.
Main Technical Indicators should be considered When Selecting Solar Inverters
In the photovoltaic system, the electric energy generated by the solar cell is first stored in the battery, and then converted into 220V or 380V alternating current through the inverter. However, the battery is affected by its own charge and discharge, and its output voltage varies widely. For example, for a nominal 12V battery, its voltage value can vary between 10.8 and 14.4V (exceeding this range may cause damage to the battery).
Solar Inverter Troubleshooting
Solar inverter is the brain of the photovoltaic power generation system. In the process of photovoltaic power generation, the power generated by the photovoltaic array is DC power, but many loads require AC power. The DC power supply system has great limitations— it is inconvenient to convert voltage, and the load application range is also limited. Except for special electricity loads, inverters are required to convert DC power into AC power. The solar inverter is the heart of the photovoltaic power generation system, which converts the direct current generated by the photovoltaic modules into alternating current, and transmits it to the local load or grid. It is a power electronic device with protection functions.
Types of Solar Inverter
The solar AC power generation system is composed of solar panels, charge controllers, inverters and batteries; the solar DC power generation system does not include inverters. The process of converting AC power into DC power is called rectification, the circuit that completes the rectification function is called a rectifier circuit, and the device that realizes the rectification process is called a rectifier device or rectifier. Correspondingly, the process of converting DC power into AC power is called inverter, the circuit that completes the inverter function is called inverter circuit, and the device that realizes the inverter process is called inverter equipment or inverter.
What is Inductor of Solar Inverter?
Inverter inductor is generally composed of skeleton, winding, magnetic core or iron core, shielding cover, packaging material, etc. It is a component that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer, but with only one winding. The biggest feature of the inductor is that the current cannot be changed suddenly, but can only gradually become larger or smaller.
Tips for Installing Solar Inverter
The solar inverter is one of the most important electronic components in the entire photovoltaic power generation system, but the wrong installation of the solar inverter will result in a decrease in the service life of the solar inverter. Then, the next step is to introduce the installation and precautions of the solar inverter for you.
How to Choose a Solar Inverter for Home?
A solar inverter is a power conversion device that converts direct current from a battery to alternating current. So, how to choose a solar inverter for home PV system? The situation of the home PV system is complicated. If the components are short-circuited and grounded and the after-sales maintenance cannot be carried out immediately, it is likely to cause a fire or a safety accident. At this time, turn off the DC switch to prevent further escalation of the fault.
How to Maintain a Solar Inverter?
The solar inverter converts DC power into AC power, and the core of the inverter device is the inverter switch circuit. The circuit completes the inverter function by turning on and off the power electronic switch. The on-off of power electronic switching devices requires certain driving pulses, and these pulses may be adjusted by changing a voltage signal to generate and adjust the pulse circuit.
The Importance of Solar Inverters in Solar Systems
Maximum power tracking MPPT function when the light intensity and temperature changes, the solar module input power presents a linear change, the solar module is not a constant voltage source, nor is it a constant current source, its power will shift with the output voltage shift, and there is no direct relationship with the load. Its output current along with the voltage rise is a horizontal line at first, and when it reaches a certain power, it decreases with the voltage rise, and when it reaches the module open circuit voltage, the current decreases to zero.
How to Eliminate Electromagnetic Interference from Solar Inverters?
The input port and output port of the solar inverter are designed with an EIM filter. The purpose is to control EMI transmission interference and only allow the use of ideal low-pass current at DC and power frequency. In addition, it is a bidirectional filter, which can not only To avoid noise interference from the inverter to the outside world, and to prevent the introduction of external interference into the system, the filter includes X and Y capacitors and common mode inductors. The common mode inductance is on the same magnetic ring, which is composed of two windings with opposite directions and the same number of turns, so that the magnetic field generated when the flow passes through the windings is superimposed, and presents a large inductive reactance to the interference current. Mode interference, the common mode capacitor will introduce the common mode current to the ground without passing through the power grid.
Solar Inverter Applications
Usually direct current is directly converted into alternating current, and then power is supplied to the device. Electrical appliances that can be used include desk lamps, fans, computers, rice cookers, televisions, refrigerators, washing machines, air conditioners, soybean milk makers, electric kettles, ovens, projectors, and hair dryers, induction cooker and most other household appliances.
How to Choose the Operating Mode of Solar Inverter?
Application area: This mode is used in areas with no or less electricity. Mains electricity is expensive and frequent power outages. It is important to note that the inverter will switch to utility power when it needs to use the battery to a lower value. The advantage of this mode is that the solar energy can be fully utilized. The disadvantage is that the user's electricity consumption cannot be fully guaranteed. When the battery voltage is low and the mains is abnormal, no electricity can be used. If the user's demand for electricity is not particularly high, this mode can be selected.
Solar Inverter Functions
The solar power inverter not only has the function of DC-AC conversion, but also has the function of maximizing the function of solar cells and system maintenance. This article mainly focuses on solar power inverter’s automatic operation and shutdown function and maximum power tracking control function.
How Solar Panels Work and Where They Store Electricity?
The solar panels will generate DC electricity once the sun hits their surfaces, but they do not store electricity, they need batteries to store such generated electricity inside. The solar panels are manufactured from semiconductor materials like silicon, and they produce DC electricity through a process called photovoltaic. Under photovoltaic process, the semiconductor materials will exposure when the sunlight hit it, so the DC current will be generated.