Home . Solar . Freesun HEM HYBRID


3190 kVA - 3630 kVA

34.5 kVac

1050 kW - 3150 kW (DC/DC)

1500 Vdc

The HEM HYBRID inverter is designed for utility scale solar-plus-storage applications, which require the advantages of a central inverter solution but also the modularity of a string architecture. It can include up to six DC/DC converters of 525 kW each one, fully compatible with different battery technologies and manufacturers. It also has the added advantage of having an integrated medium voltage transformer and switchgear.








All in one

The Freesun HEM HYBRID inverter is the only solar inverter on the market to integrate up to six DC/DC converters of 525 kW each one, and the transformer and medium-voltage cells into the same set of equipment. Its use in utility-scale plants delivers considerable savings in terms of CAPEX, while greatly simplifying design and installation.

DC/DC Built-in

The Freesun HEM HYBRID device integrates the DC/DC converters, as well as the MV transformer and switchgear, reduccing the needs of additional connections.

Clipping Recovery

The HEM HYBRID gets the maximum revenues from the PV generator by charging the battery storage system when the PV inverter is clipping the output power, due to the high DC/AC power ratios. This stored energy can be exported to the utility grid when the price per KWh is high.

Field Replaceable Units

The Freesun HEM HYBRID device consists of six FRUs (Field Replaceable Units) for DC/AC conversion and up to six FRUs for DC/DC conversion, designed, as the name implies, for easy replacement in situ.


iCOOL 3 is a ventilation system designed to supply a constant flow of clean air to the inside of the equipment without any need for dust filters or liquid cooling systems.

Econ Mode

This innovative control mode allows you to reduce medium-voltage transformer loss by up to 25%, and also to cut the plant’s power consumption.

Multilevel Topology

Multilevel topology is the most efficient way of addressing the management of high DC voltages. This three-level configuration reduces losses at the power stage, increases efficiency and minimizes overall harmonic distortion.

Maximum Durability

The Freesun HEM HYBRID unit comes with a high level of protection against external agents such as rain, snow and ice. It is fitted with insulating panels designed to shield it from solar radiation and a casing that provides C4 corrosion protection by default.

Active Heating

During the night, when the inverter does not actively export power, it can import a small amount of energy to prevent internal condensation – without any use of heating elements.

Turnkey Units

The Freesun HEM HYBRID is fitted with all the medium-voltage elements. This compact solution simplifies the task of designing the installation, while also reducing connection costs and therefore minimizing the LCOE. Its front access also makes it easier to maintain.

Easy to service

With the HEM HYBRID, Power Electronics offers a real turn-key solution, including the MV transformer and switchgear fully assembled and tested at the factory. The HEM HYBRID is a compact turn-key solution that will reduce site design, installation and connection costs, and therefore will minimize the LCOE. By providing full front access the HEM HYBRID series simplifies the maintenance tasks, reducing the MTTR (and achieving a lower OPEX).

Robust Design

Freesun HEM HYBRID inverter modules offer a useful service life of more than 30 years’ operation in aggressive environments and under extreme weather conditions. They are tested and configured to withstand anything from the sub-zero temperatures of the Siberian tundra to the searing heat of California’s Death Valley.

Freesun App

Our app allows you to monitor the status of your inverters. If you are a technical support specialist or customer, you can download the app and start monitoring your Power Electronics equipment remotely.

Download the appDownload the app

FEDER LogoS (Fondo Europeo de Desarrollo Regional)

Co-financed by the European Regional Development Fund (ERDF) as part of its 2014-2020 Operational Smart Growth Program, with the aim of promoting research, technological development and innovation. EXP 00096963 / IDI-20170744

Related news

Power Electronics reaches 2.5 GW of installed power in Spain

19 November, 2019

Power Electronics exceeds 2.5 GW of installed power in utility scale photovoltaic plants in Spain in 2019. In total, the company has participated in 82 PV projects in Spain. Just in the last year, Power Electronics has participated in 36 projects, which makes the company a leader in sales in this market. All the products comply with all the grid quality requirements, pending the publication of the product certification entities by ENAC.

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