What is an Inverter for photovoltaic grid connection?

A photovoltaic grid-tie inverter is a device that converts the power generated by solar panels into usable electricity for consumption or injection into the electrical grid. Solar panels produce direct current (DC), but most electrical systems and appliances run on alternating current (AC), so the inverter is essential to adapt the power and make it compatible with the electrical infrastructure.
Torivac’s PV grid-tie inverter is an essential component for companies looking to integrate solar power into their daily operations. This device converts the direct current generated by solar panels into alternating current, allowing its direct use in industrial and commercial installations.

How does this device perform in a highly demanding power system?

In industrial, commercial or large infrastructure installations, where energy demand is high, the inverter works in real time adjusting the energy conversion according to the required consumption. It integrates a maximum power point tracking system (MPPT), which allows extracting the maximum performance from the solar panels under variable conditions such as changes in radiation or temperature.

When PV production exceeds consumption, the inverter can redirect surplus energy to the grid or store it in batteries, depending on the system installed. This is crucial in sectors that operate with high energy loads, as it helps reduce dependence on the conventional grid, lower costs and improve operational efficiency.
In addition, in critical systems such as hospitals, factories and data centers, the high-capacity inverter incorporates advanced protections against power surges or dips and power outages, ensuring that essential equipment continues to operate without interruption.

Benefits in controlling energy input and output

1. Reduction of energy costs

The inverter allows the energy generated by the solar panels to be consumed directly in the installations, reducing the purchase of electricity from the grid. This significantly reduces the electricity bill, especially in industries with high consumption, such as manufacturing and agribusiness. In addition, by taking advantage of a free source such as solar energy, the return on investment of the photovoltaic system is accelerated, allowing the initial cost to be amortized in less time.

2. Stability and reliability of power supply

Fluctuations in the grid can affect industrial production, causing outages or damage to sensitive equipment. Torivac’s inverter efficiently manages solar power conversion, stabilizing the voltage and ensuring a constant supply, even in conditions of low solar generation. This stability is key in sectors such as data centers, hospitals and automated production plants, where any variation in power can affect operation.

3.Compatibility with energy monitoring and management systems.

Torivac’s inverter is compatible with real-time monitoring platforms, allowing companies to control production and energy consumption from any location. This is essential for industries with multiple plants or large production areas, as it allows for monitoring power surges and dips.

Torivac is a company specialized in the design and manufacture of toroidal transformers and voltage regulators
We have nearly 60 years of experience in the industry, which has allowed us to grow to a presence in more than 30 countries.
We have a technical team that guarantees the manufacture of high precision and efficient devices. Our work methodology allows us to perform advanced simulations in each phase of each project, ensuring that each component, from toroidal voltage variators, adjustable transformers, battery dischargers, potentiometers and toroidal cores, meet the highest standards in the industry.
We work closely with companies that have a large infrastructure, seeking to ensure customized and efficient solutions. We aim to respond to the demands of industries such as technology, energy and automotive. Our goal is to continue innovating, strengthening strategic alliances and expanding our global reach, always maintaining the seal of quality and excellence that has characterized us since our beginnings.

Technical Details

• Dynamic maximum power point search (MPPT).
• Minimum generation power for MPPT operation: 20W.
• Minimum generation power to inject energy into the grid: 3W.
• Pure sine wave, THD<3%.
• Consumption in standby < 1W.
• Over-temperature protection by maximum power regulation.
• Automatic adaptation to the characteristics of the F.V. field.
• Maximum yield 95%.
• Admitted mains voltage range : 230V ±2%.
• Supported mains frequency range: 50Hz ±0.02%.
• Disconnection time in case of power failure or opening of the network < 5ms.
• Isolation between V.F. field circuits and mains: 3000V AC 50Hz.
• V.F. field ground leakage detection.
• EMC filter for mains connection, ensuring electromagnetic compatibility in compliance with CE standards.
• Protection against voltage peaks and atmospheric discharges.

We use the most advanced power conversion technology. The input stage, equipped with high-efficiency POWER-MOS transistors, converts direct current into high-frequency alternating current, modulated in a sinusoidal manner that closely follows the mains voltage. The isolated power transfer is done through a isolating transformer, which, operating at high frequency, has a higher efficiency than the transformers operating at mains frequency, with a much smaller weight and dimensions
. At the output an IGBT bridge restores the 50Hz frequency, with synchronized switching with the mains.
All inverter functions are controlled by a state-of-the-art flash MICROPROCESSOR. This includes precise tracking of the maximum power point of the PV field. Parameters such as field voltage-current curve, grid voltage and delivered power are constantly measured, readjusting the operating point every few seconds to achieve maximum energy utilization. Grid voltage and frequency are monitored every millisecond, in order to ensure an immediate disconnection of the inverter in case of deviation from the authorized range, or island operation, according to RD 1663/2000.
The fact of being equipped with program flash memory allows to easily make a modification of parameters (if necessary, without removing the unit from the installation) to adapt it to future changes in regulations or specific conditions of the customer.