What is an Inverter and How Does It Work and Why Is It Crucial?

Voltmax — Tue, 04 Feb 2025 22:02:34 +0000

The inverter is one of the key elements of every photovoltaic installation. Although it is not as visible as the solar panels, its role is fundamental to the proper operation of the system. Let’s explore how the photovoltaic inverter works and what functions it performs in the system.

What is an inverter and how does it work?

An inverter is a device that converts the direct current (DC) generated by solar panels into alternating current (AC), which powers household appliances and devices. Most electrical devices in homes require alternating current with a voltage of 230/400 V and a frequency of 50 Hz. Without the inverter, the electricity generated by the panels wouldn’t be usable in everyday life.

After converting the current, the inverter transfers energy to the power grid through a bidirectional meter. This allows surplus energy produced on sunny days to be sent back to the grid, while during periods of lower production, such as in winter, the user can draw energy previously supplied to the grid. This process, called net-metering, can lead to savings of up to 80% on energy bills.

You might also like: Luxembourg Heating Cost Comparison 2026

Types of inverters

Different types of inverters are available to suit various needs:

On-grid inverters – These work in conjunction with the power grid and are the most commonly used in residential photovoltaic systems.
Off-grid inverters – These operate independently of the grid but require batteries to store energy, which can increase costs.
Hybrid inverters – These combine the capabilities of on-grid and off-grid inverters, allowing for both grid interaction and energy storage in batteries.

Selecting the right type of inverter depends on individual needs and preferences. In Poland, on-grid inverters are the most popular due to the high cost of battery storage systems.

Additional inverter features

Modern inverters come with features that make photovoltaic systems more user-friendly. For example, many offer system monitoring through a mobile app, enabling users to track energy production and usage from anywhere. The app also provides data on energy savings, helping users better understand and manage their system’s performance.

Another important feature is MPPT (Maximum Power Point Tracking) technology, which optimizes the operation of the panels by adjusting to changing sunlight conditions. This ensures that the inverter extracts the maximum possible energy from the panels, increasing system efficiency by up to 20% compared to older technologies.

Examples of SolarEdge inverters – Get to know them better

Summary

The inverter is the heart of every photovoltaic installation. It plays a critical role in converting direct current to alternating current, making solar energy usable. Additional features like remote monitoring and panel optimization make modern photovoltaic systems more efficient and convenient.

If you’re considering investing in solar energy, remember that choosing the right inverter is crucial. It will impact the efficiency of your system and your long-term savings.

Wondering which inverter is the right fit for your system? Contact us today and let our experts help you choose the technology that keeps your solar installation running at its best

The post What is an Inverter and How Does It Work and Why Is It Crucial? appeared first on Voltmax Energy Solutions in Luxembourg.

3 ways to improve photovoltaic safety according to SolarEdge

Voltmax — Thu, 04 Jul 2024 11:33:09 +0000

The installation and maintenance of a photovoltaic system are generally safe processes. However, just like the cars we drive, some solar systems offer better photovoltaic safety features than others. To know what to watch out for, it is important to understand the basics of how a photovoltaic system works.

How does photovoltaics work? How does solar energy work?

Basics: A photovoltaic system consists of solar modules (also called photovoltaic panels) and an inverter. Photovoltaic modules convert solar radiation into direct current (DC). The inverter then converts the direct current into alternating current (AC), which powers our homes, businesses, and other buildings. When the sun is not shining, energy is supplemented by the grid.

Photovoltaic modules generate high voltage all the time the sun is shining, even if the main switch is turned off. This is important to keep in mind because, in the unlikely event of a fire, high DC voltages could hamper emergency services.

Solar Power Precautions + SolarEdge

SolarEdge photovoltaic systems have a suite of built-in safety features that meet the highest industry standards. Here are three of these features:

1. SafeDC: Increased security of each module.

Traditional string inverters generally have limited safety features. To meet photovoltaic safety standards, they may require additional equipment, increasing the cost and complexity of the system.

SolarEdge has developed power optimizers attached to each module to maximize its performance, transforming them into intelligent modules. It improves the efficiency of photovoltaic panels by individually monitoring and optimizing the operation of each panel in the installation. Thanks to this, even if there is a shadow on one panel, the other panels will still work at full capacity.

As part of this solution, SolarEdge inverters have a built-in SafeDC safety feature that automatically reduces the voltage on each module to 1V when the inverter is turned off. This means that during installation, maintenance, emergency situations or any situation in which the inverter is disconnected from the grid, the DC voltage drops to a safe level, protecting people and property. In summary SolarEdge SafeDC complies with several international safety standards.

2. Detection and interruption of an electric arc

Arcing in photovoltaic systems can occur when connectors or cables are corroded or improperly connected, causing sparks and creating a fire hazard. This can also happen as solar systems age, cables degrade, or animals gnaw on them. Modern safety regulations require arc flash detection to minimize fire risks. In the United States, UL 1699B requires that arcs be detected as they occur. In Europe, the IEC 63027 standard is under development, but insurance companies may require its use.

Traditional inverters require additional arc fault detectors, which increases costs. However, SolarEdge has a built-in arc detection feature that identifies arcs and shuts down the inverter in accordance with US standard UL1699B. This increases personal safety and also protects equipment and buildings.

3. SolarEdge monitoring platform.

Certainly Security meets convenience with module-level monitoring and remote troubleshooting. The SolarEdge monitoring platform provides installers and homeowners with complete visibility into system performance, enabling module-level control, including automatic alerts, remote troubleshooting and comprehensive reporting. This eliminates the need for extensive on-site diagnostic work, which can be dangerous.

Watch the video prepared by SolarEdge:

Out of concern for our customers and especially for the safety of photovoltaic installations and our customers’ homes, VOLTMAX SARL bases its solutions on SolarEdge systems. Make an appointment with our advisor and discover all the advantages of these solutions.

Contact, if you are looking for:

inverters,
optimizers,
energy storage
devices providing backup power in the event of a power outage,
smart energy meters
chargers for electric cars that adjust the power of the energy consumed to the energy demand of the house.

Check: SolarEdge Energy Storage

VOLTMAX SARL: Contact our advisors or fill out the form on our website: www.voltmax.lu

Choose safety for your family!

Safety comes first in every solar project. Contact us today and let’s design a system with SolarEdge solutions that keeps your energy secure and your mind at ease

The post 3 ways to improve photovoltaic safety according to SolarEdge appeared first on Voltmax Energy Solutions in Luxembourg.

solar monitoring – Voltmax Energy Solutions in Luxembourg

What is an Inverter and How Does It Work and Why Is It Crucial?