Les différents types d'onduleurs triphasés pour les solutions énergétiques vertes

A three-phase inverter is a widely used device in the field of power electronics for converting direct current (DC) to alternating current (AC). It is a high-power inverter power supply for electric power, by converting the input DC voltage into three different AC voltages respectively, and keeping their phase difference with each other at 120 degrees, finally forming a stable three-phase AC output. Such devices play an important role in the military, communications, factories and corporate uninterruptible power supply systems.

What are the types of 3 phase inverters? Today, let’s embark on a journey of green energy exploration and unveil the mystery of three-phase inverters.

What are the types of three-phase inverters?

According to the different working principles and application scenarios, 3 phase inverters can be divided into various types. Below, we will unveil them one by one.

Voltage Source Inverter (VSI)

The Voltage Source Inverter (VSI), the magician of the power world, utilizes advanced power electronic switching technology to skillfully awaken those sleeping DC energy into leaping three-phase AC energy. Each of its conversions is like a delicate dance, which makes people can’t help but marvel at it. The 3 phase inverter plays a crucial role in this process, ensuring smooth and efficient conversion from DC to AC.

The charm of the VSI lies not only in its impressive conversion capability but also in its rock-solid stability and silky-smooth adjustability. Like a meticulous craftsman, it flexibly adjusts the amplitude of the output voltage according to actual needs, ensuring that the output three-phase AC voltage is both stable and reliable, as if injecting a firm force into our lives. The 3 phase inverter contributes to this stability by maintaining consistent and controlled output in various conditions.

In the renewable energy system, VSI is even that pivotal guardian. Whether it’s the gentle embrace of solar power or the wild dance of wind power, they all need to convert this gift from nature – DC power – into AC power that we can use. The VSI is the key to this conversion process. With its high efficiency and stable performance, it ensures that the renewable energy system can run steadily and reliably like a flowing river, providing us with a steady stream of green energy, as if it were a bridge between nature and mankind.

Not only that, but the VSI has the power to operate at high power levels. This means that it is able to meet the needs of those large renewable energy systems, providing green energy for more homes and industries, as if it were a generous giver, selflessly sharing nature’s gifts with everyone.

Current Source Inverter (CSI)

With its zero emission and low noise, electric vehicles have become the choice of more and more people for traveling. Behind this, the Current Source Inverter (CSI) provides a constant flow of power for electric vehicles. It is like the green heart of the electric vehicle, converting the direct current generated by the battery pack into three-phase alternating current (AC), which drives the rotation of the electric motor, allowing the electric vehicle to speed on the road. In some cases, a 3 phase inverter can also serve a similar role in converting DC to AC for motor control.

Unlike voltage source inverter, CSI specializes in current output. It is capable of converting DC current into stable AC current, and the amplitude of the output current can be adjusted according to demand. This feature enables the CSI to maintain stable performance at high power levels, providing strong power support for electric vehicles. At the same time, the CSI’s low voltage drop enables it to more efficiently utilize the energy of the battery pack, increasing the range of the electric vehicle.

In an electric vehicle, the role of CSI is critical. When the driver presses the gas pedal, the battery pack begins to release electrical energy, and the CSI quickly converts this direct current into three-phase alternating current (AC). This AC power is converted into mechanical energy by the electric motor, which propels the electric vehicle forward. In this process, the stability and efficiency of the CSI directly determine the power performance and range of the electric vehicle. In some electric drive systems, a 3 phase inverter would be responsible for driving the electric motor by converting DC to AC power efficiently.

What’s even more amazing is that the scope of application of CSI is not limited to electric vehicles. Due to its outstanding performance and stability, CSI is also widely used in other applications that require high power and low voltage drop. For example, in ship electric propulsion system, CSI can provide stable power for propellers; in wind power generation system, CSI can convert DC power generated by wind turbines into AC power to supply power to the grid.

Matrix Converter

Matrix converter, the bright star in the field of power conversion, it is proudly independent of the traditional three-phase inverter, with a revolutionary posture, using advanced power electronics switching matrix technology. Like a skilled magician, it converts DC voltage into three-phase AC voltage skillfully and directly, without the need for the cumbersome intervention of the intermediate DC link, which is so smooth and elegant. While the 3 phase inverter typically requires an intermediate DC link, the matrix converter achieves this conversion more directly and efficiently.

The high efficiency of the matrix converter is simply breathtaking. It seems to have a kind of magical power, can complete the conversion of voltage and current in the blink of an eye, the whole process is almost no energy loss, just like a never tired dancer, lightly jumping on the stage, every movement is full of power and beauty.

And its fast switching speed is even more fascinating. In milliseconds, it can complete the state of the switch, to ensure that the energy supply is as stable and continuous as a trickle of water. This rapid response ability, so that the matrix converter in the aerospace and military field and other high-performance requirements of the occasion, as if a battle-hardened warrior, showing unrivaled courage and strength.

However, this leader in the field of power conversion is not easy to come by. Its manufacture requires a very high level of technology and cost investment, just like a precious work of art, which needs to be carefully carved and polished by craftsmen. Its structure is complex and sophisticated, requiring advanced manufacturing processes and materials to deliver such outstanding performance. As a result, despite its superior quality, it is also relatively costly, making it commonly used in applications that demand the highest performance, such as aerospace and military applications. In these fields, the matrix converter is like a fearless hero, guarding every critical moment and contributing to the progress and development of mankind. Meanwhile, the 3 phase inverter remains a reliable and more affordable solution for a broader range of applications, including renewable energy systems and electric vehicles.

Circulating Converters

The circulating converter, the bright star of the industrial field, shines on the industrial stage with its excellent performance and efficient working mechanism. It is like a steady guardian, even at high power levels, but also able to operate stably, calmly deal with the huge energy demand of large-scale industrial equipment, to ensure that the power supply is stable and sufficient. Under its guardianship, industrial production is as smooth as a river, rushing endlessly, full of vigor.

Circulating converter also has a marvelous conversion efficiency, as if it is a meticulous financial planner, in the process of energy conversion, the loss of energy to a minimum, for the enterprise energy saving and consumption reduction goals set up a heck of a battle. Every time it works, it is like laying a solid cornerstone on the road to saving costs and improving efficiency for the enterprise.

In the iron and steel, chemical and other industries, the motor speed control system for production efficiency and product quality of the importance of self-evident. The circulating converter, which is the key link in these systems, is like a precise commander who precisely adjusts the motor speed according to the production demand and realizes the fine control of the production process. Under its command, the products on the production line are like being given life, and every detail is full of precision and perfection.

Three Phase Solar Grid-Tie Inverter

When the first ray of sunlight in the morning is like a gentle finger, gently brushing over the solar panels on the roof, those sleeping photons seem to be awakened, jumping happily, and are captured by the solar panels and converted into DC electricity. At this time, the three-phase solar grid-connected inverter is like an elegant dancer, stepping lightly into the feast of photoelectricity. It utilizes advanced power electronics technology to skillfully convert this DC current into three-phase AC power, just like a skillful weaver who weaves the scattered threads into a gorgeous grid, injecting a steady stream of green power into our lives.

The role of three-phase solar grid-connected inverter is much more than that. It is more like a guardian of the grid full of wisdom, with a pair of keen eyes and a sensitive heart. It can sense every pulse and breath of the grid in real time, and accurately capture the needs and changes of the grid. When the grid needs more power support, it is like a brave knight, responding quickly and automatically adjusting the output power to ensure the stable operation of the grid. This intelligent regulation not only improves the efficiency of energy utilization, but also brings us a more reliable and stable power supply.

Three Phase Solar Off-Grid Inverter

When the sun rises, the gentle light caresses the solar panels, as if it is a generous gift from nature to human beings. These dexterous photoelectric converters begin to capture the warmth of the sun, converting light energy into DC energy, like a silent energy feast quietly staged. At this critical moment, the three-phase off-grid onduleur solaire quietly starts, like a silent guardian, converting this precious DC energy into three-phase AC energy, and carefully stored in the battery pack for emergency use.

When the night falls, the stars are dotted, or encounter stormy weather, lightning and thunder resulting in grid blackout, the three-phase solar off-grid inverter becomes the light of hope for people. Like a reliable partner, it comes forward in the darkness and starts up quickly to provide a steady stream of power support for electrical equipment at home, ensuring that the rhythm of people’s lives is not interrupted by sudden darkness.

This self-sufficiency allows people in remote places to keep their lives running even in the face of natural disasters or the plight of grid failures. It is like a sturdy shelter that protects people from the wind and rain and guards their warm homes. Three-phase solar off-grid inverter, the silent dedication of the energy guardian, is in its own way, writing a beautiful chapter of harmonious coexistence between mankind and nature.

Three Phase Solar Hybrid Inverter

Three-phase solar hybrid inverters are not only able to cope with complex and changing energy needs, but also come through in critical moments to ensure that our power supply is never interrupted. This hybrid inverter, with its unique intelligent switching function, skillfully combines both on-grid and off-grid modes of operation, bringing unprecedented convenience and peace of mind to our lives.

On a clear afternoon, the solar panels are bathed in warm sunlight, constantly converting light energy into electricity. At this time, the three-phase solar hybrid inverter is like a smart dispatcher, which will intelligently decide the destination of this power according to the status of the power grid and our demand for electricity. If everything is fine with the grid, it will smoothly integrate these green energies into the grid, which not only saves our electricity bill, but also contributes to the cause of environmental protection.

But life is always full of variables, when the night falls or encounter bad weather leading to grid blackout, the three-phase solar hybrid inverter immediately transforms into a brave guardian. It will quickly switch to off-grid mode, releasing the stored electricity to provide stable power support for electrical devices at home. This seamless switching ability allows us to keep our lives running normally and enjoy the peace of mind and comfort that green energy brings when faced with a sudden power outage.

What’s even more amazing is that the three-phase solar hybrid inverter is much smarter than that. It can also automatically adjust the output power according to our power consumption habits and needs, ensuring the rational distribution and utilization of power.

Explore in depth: Technical details of 3 phase inverters

When we gently lift the corner of the mysterious veil of the 3 phase inverter, after glimpsing its colorful types, the heart can not help but surge a strong desire for knowledge, eager to explore the technical details of this magical device more in-depth. After all, the three-phase inverter is not only a cold machine, but also a bridge for us to communicate with the power world, which contains the crystallization of human wisdom, and is the key for us to realize efficient energy conversion and utilization.

Conversion efficiency: the soul of 3 phase inverter performance

The mission of a 3 phase inverter is to convert this DC energy into AC energy that we can use directly. But in this process, not all the energy can be perfectly converted, there is always a part of the energy will be quietly lost in the conversion process.

This is where the importance of conversion efficiency comes to the fore. The higher the conversion efficiency, the less power is wasted in the conversion process, and the more energy we can utilize. This is not only a numerical improvement, but also the efficient use of resources, respect and protection of the environment.

Waveform quality and equipment compatibility

Waveform quality, a seemingly cold and hard term, actually contains the inverter’s deep affection for the load equipment. It represents whether the waveform of power output from the inverter is close to the perfect sine wave, like the pulse of life, regular and powerful. When the waveform quality is excellent, the load equipment will run leisurely in the embrace of stable power, showing its best performance, as if getting the most intimate care.

However, if the waveform quality is poor, the inverter is like a tired traveler, unable to provide solid support for the load equipment. The fluctuations and disturbances it brings, like a storm, make the equipment tremble in anxiety, or even fail to work normally, or even suffer damage. This is not only a nightmare for the equipment, but also an unspeakable pain in our hearts.

Therefore, when choosing a three-phase inverter as the “life guardian”, we need to harbor a deep love for the equipment and carefully review the waveform quality report of the product. We need to make sure that it complies with the national or international standards, such as IEEE, IEC and other authoritative organizations to develop the “golden rules”. These standards are not only the cornerstone of inverter performance, but also a solid line of defense for safe and stable operation.

At the same time, we also need to pay close attention to the compatibility between inverters and load equipment. The tacit cooperation between them, like a match made in heaven, ensures the stable transmission of electricity and allows the equipment to bloom in harmony. This inclusive sentiment is the most affectionate confession to the equipment, and is also the most sincere expectation in our hearts.

Safety performance and protection measures

If a three-phase inverter does not have good safety performance, it may become vulnerable to the challenges of high voltage and high current, and even become a hidden danger to the safety of home electricity. But fortunately, modern three-phase inverters are equipped with perfect safety protection measures, like a warrior in armor, always guarding our electricity safety.

Over-current protection, like a sword in the hands of the warrior, can be quickly sheathed when the current increases abnormally, cutting off the power supply, preventing the current is too large to cause fire or damage to equipment. Over-voltage protection, like a warrior’s strong shield, when the voltage rises abnormally, it can respond in time to protect the inverter from damage, to ensure our power safety. Short circuit protection, on the other hand, is the warrior’s keen insight, once the short circuit situation is detected, it can take immediate action to avoid potential disaster.

When choosing a three-phase inverter, I’m always attracted to products with perfect safety features and protections. They are like a trusted guardian, giving me a sense of security while using green energy. I will carefully check the safety performance report of the product to find out whether it has passed the relevant safety certification, such as CE, UL and other authoritative organizations. These certifications not only recognize the quality of the product, but also the commitment to our safety in using electricity.

An Intelligent Guide to Choosing a 3 Phase Inverter

Faced with a wide range of 3 phase inverter product, how do we choose? Below, I will provide some practical guidelines for you to choose.

Define your needs and pinpoint your position

First, we need to think carefully about the amount of power we need. This is as important as determining the destination of your journey. Different application scenarios have different power requirements. For example, if we are choosing an inverter for a home power supply system, then only a few kilowatts of power may be sufficient. But if I am powering industrial equipment or a large commercial building, then the power required may be tens of kilowatts or more. Only with a clear idea of the power requirements can we be sure that the inverter selected will meet my actual needs.

Secondly, we need to consider the working mode of the inverter. Will it be in grid-connected mode, off-grid mode or hybrid mode? This depends on our specific needs and scenarios. Grid-connected mode is suitable for those who are able to connect to the grid, and can feed excess power back to the grid. Off-grid mode is more suitable for remote areas or emergency situations where grid access is not possible. The hybrid mode combines the characteristics of both on-grid and off-grid, making it more flexible and versatile. With a clear understanding of the working modes, we can find the right inverter product for us more precisely.

Finally, we have to consider the working environment of the inverter. Different environments have different requirements for inverters. For example, if the inverter needs to be installed in outdoor or harsh environments, then we need to choose those products that have the characteristics of waterproof, dustproof and high temperature resistance. And if it is used indoors, then the requirements for the environment may be relatively lower. Clearly the working environment, we can be more targeted to choose the right inverter products.

Know the brand, trust the reputation

In the wide range of three-phase inverter market, I always tend to choose those products of well-known brands. This is not only because they represent higher product quality and better service system, but also because they carry the trust and praise of countless users. In my opinion, brand is not only a kind of logo, but also a kind of commitment, a kind of quality and care for users.

Avant is a leader in China’s solar inverter manufacturing industry, with 14 years of professional experience in R&D, manufacturing and sales of solar inverters. Afore has built up a perfect sales network, warehousing system and after-sales service centers in the world’s major PV markets, and provides excellent quality and thoughtful service of PV inverters and system solutions for customers in Europe, the UK, Australia, China, India, Japan, North America, South America, etc. Afore’s product lineup covers PV string inverters, PV storage inverters, and PV storage battery series.

Afore’s product portfolio includes PV string inverters, PV storage inverters, and energy storage batteries, and has been successfully certified by various national and international authorities, including CQC, ICE1, VDE/G98/G99, UL, and IEEE.

Conclusion

In the world’s growing desire for green and sustainable energy, three-phase inverters, as an indispensable gem in renewable energy systems, are ushering in the golden period of their development, as if bathed in the bright spring light. From the steady pace of voltage source inverters to the dynamic posture of current source inverters; from the mysterious matrix of matrix converters to the endless cycle of recirculating converters; to the tacit understanding of grid-connected three-phase solar power inverters, the resilience of off-grid inverters when they are independent and the wisdom of hybrid inverters when they are compatible with one another – these diverse products are just like a multitude of stars. These diversified products are like stars, adding endless splendor and personality to our choices.

Looking into the future, with the ever-changing technology and widening applications, three-phase inverters will surely shine more brightly in the field of green energy, and become a powerful driving force for us to move towards a cleaner and more sustainable home on earth. Let’s be full of passion, hand in hand, heart to heart, to meet the three-phase inverter brought by that piece of green future full of hope!