PCS -Power Conditioner System-

Power Conditioner System 1000kW

Fuji Power conditioner "PVI series" received the Agency of Natural Resources and Energy Director’s Award for Superior Energy Conserving Machinery Award.

On-line Diagram


Adoption of new IGBT and new circuit system

Fuji Electric commercialized the world’s first three-level module in which a new RB-IGBT * and an existing IGBT are integrated in one package.

Application of this new module to a new three-level conversion circuit enables a large reduction both in power loss and in the number of parts, resulting in high efficiency and low noise in the equipment.

* : RB-IGBT: Reverse Blocking-Insulated Gate-Bipolar Transistor

New IGBT module

New three-level conversion circuit

Reduction of power loss

World’s highest efficiency 98.5%
(DC 1,000 V product)

Compared to existing products, our new power conversion technology, which uses a new three-level conversion circuit in the new module, reduces switching loss in the IGBT device and also reduces filter loss by reducing to one half the harmonic content in PWM waveform outputted by the inverter. This results in the world highest efficiency of 98.5% (DC 1,000 V product).

We have also achieved EURO efficiency of 98.2% (DC 1,000 V product).

Outdoor substation type

Fuji Electric provides a substation type of PCS that can be installed outdoors.

A switchgear, a step-up transformer, and PCS that can be installed outdoors are integrated on a common base in a single unit. This eliminates the need for a building for storing panels and air-conditioning facilities. Since this substation is transported to the site as an integrated unit, on-site construction costs can be greatly reduced.

With the installation of an optional fuse for a DC branch in the PCS, the panel output collected in the current collection box can be connected to the PCS as is.

Single unit capacity 1,000 kW

Fuji Electric successfully developed a PCS with a single unit capacity of 1,000 kW.

For large-scale photovoltaic power generation systems, this large single unit capacity enables the number of PCS units to be optimized, resulting in significant reductions in construction and building costs.

Standard FRT function

The fault ride through (FRT) function that is becoming essential in PCS for large-scale photovoltaic power generation is provided as a standard function.

Even if a three-phase or two-phase short circuit accident occurs in the system, the inverter can output three-phase current in a specified range to suppress power supply variations in the system.

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