Micro Inverter VS Optimizer: A Secure and Stable Smart Energy Solution

With the widespread adoption and expanding applications of photovoltaic (PV) systems, users have raised higher requirements for the safety, power generation capacity, flexibility, and intelligent operation and maintenance of solar power plants. Meanwhile, micro inverters, as a new type of PV on-grid system device, offer a range of advantages compared to traditional optimizers.

1.Strengthened Safety and System Stability

Optimizers, while not inverters themselves, are devices that enable maximum power point tracking and rapid shutdown functions. However, in Solar systems using string inverters with optimizers/disconnectors, if the inverter experiences a malfunction, the entire system becomes inoperable. Moreover, as the modules are connected in series, the system maintains a high DC voltage during operation, making it susceptible to DC arcing caused by potential issues such as loose connections, poor contacts, wet wiring, or insulation breakdown, which can lead to fires.

In contrast, FOTOVO micro inverters feature a higher level of safety by utilizing low-voltage parallel connection, ensuring that DC voltage on the rooftop stays below 60V, effectively mitigating the risk of DC arcing-induced fires. Additionally, micro inverters possess module-level rapid shutdown capabilities, allowing for swift disconnection between modules in critical situations, thereby enhancing system safety.

In systems utilizing micro inverters, if certain solar panels are shaded or experience malfunctions, the rest of the system continues to operate unaffected, maximizing the system’s power output. This isolated fault detection and rapid repair contribute to minimized downtime and enhanced system reliability.

Furthermore, FOTOVO inverters boast an IP67 protection rating, enabling them to operate optimally even in conditions of significant temperature and humidity variations, ensuring the durability of the entire PV system.

2.Plug-and-Play Convenience; Easy Installation

In solar systems using string inverters with optimizers, the design of the system needs to consider the serial connection of the modules to optimize the performance of the entire series circuit. This requires meticulous planning and calculations to ensure optimal system performance.

Solar micro inverters greatly simplify the design process of Solar systems. FOTOVO micro inverters support different installation configurations, from “one-in-one” to “four-in-one,” allowing for connection with up to four modules. During installation, there is no need for complex calculations to match panel capacities or consider serial connections. Moreover, the “plug-and-play” installation method eliminates the need for intricate wiring configurations, streamlining the installation process and reducing the potential for installation errors, thus improving overall installation efficiency.

According to a survey conducted by the Solar Energy Industries Association (SEIA), solar installation professionals reported an average 15% reduction in installation time when using micro inverter systems compared to systems with optimizers.

3.Flexible Expansion; Innovative Applications

PV systems employing optimizers require careful planning of the system’s size during installation, making subsequent system reconfiguration or expansion time-consuming.

In contrast, Solar systems utilizing micro inverters allow for more flexible design and layout. Micro inverters can be individually connected to each module, allowing for installment on rooftops with different orientations or tilt angles to maximize solar resource utilization. This approach is particularly suitable for complex or irregular roof structures, such as multi-faceted roofs or partially shaded areas.

Furthermore, micro inverters are not limited to installation in a singular location like “rooftops.” FOTOVO offers integrated balcony solar systems that include micro inverters, solar panels, mounting brackets, cables, etc., catering to diversified installation scenarios such as rooftops, flat grounds, railings, walls, etc., meeting personalized energy needs of users.

The robust safety of micro inverters effectively reduces the risks of fire and electrical hazards, the simplified installation process improves installation efficiency, and the flexible expansion possibilities and innovative applications provide customized balcony solar system solutions.