PCS — central and string solar inverters with efficiency up to 98.8 %
Country: Japan · Model: PCS
PCS grid-tied central and string solar inverters reach a maximum efficiency of 98.8 % and a European efficiency of 98.5 % at 1000 V DC input. They are installed at ground-mounted and rooftop PV plants of industrial scale, where energy goes to the grid through a step-up transformer.
- Types
- central and string inverters
- Maximum efficiency
- 98.8 % (DC 1000 V)
- European efficiency
- 98.5 % (DC 1000 V)
- Topology
- three-level on an RB-IGBT + IGBT module (in-house development)
Technical specifications
| Types | central and string inverters |
|---|---|
| Maximum efficiency | 98.8 % (DC 1000 V) |
| European efficiency | 98.5 % (DC 1000 V) |
| Topology | three-level on an RB-IGBT + IGBT module (in-house development) |
| Functions | FRT (fault ride-through) as standard |
| Versions | indoor; outdoor substation type (PCS + step-up transformer + MV switchgear); DC string fuses (option) |
| Software | Android loader for the PIS series |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The power section is built on a three-level module developed by the manufacturer, whose housing combines a reverse-blocking RB-IGBT transistor and a conventional IGBT. The three-level topology on such a module has fewer components, reduces switching losses in the IGBT and losses in the filter, and PWM voltage harmonics become half as large. Hence the higher efficiency and lower equipment noise. The fault ride-through function FRT is part of the standard package, because it is mandatory for large solar plants. During a three-phase or two-phase short circuit in the grid the inverter keeps delivering three-phase current in the set range and smooths oscillations in the power system. For the PIS series there is an Android loader, with which parameters are changed and the inverter is serviced from a smartphone or tablet.
How to choose
The version is chosen by the scale of the plant and by who builds the substation. For a large PV plant the outdoor substation version is convenient, where the inverter, step-up transformer and MV switchgear arrive as one set, so there is less civil work on site. The indoor version is designed for installation in an electrical room. If the array has many parallel strings, order the optional DC string fuses. A central inverter suits a large uniform field, and string units suit an array divided into sections with different orientations.
Request a price and lead time
PCS — central and string solar inverters with efficiency up to 98.8 %. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What efficiency do PCS solar inverters have?
The maximum efficiency is 98.8 % and the European efficiency 98.5 %, both obtained at 1000 V DC input. A high European efficiency matters because a PV plant works at partial load for much of the day.
Does the PCS inverter support fault ride-through FRT?
Yes, FRT is in the standard package. During a three-phase or two-phase short circuit in the grid the inverter does not trip but delivers three-phase current and supports the power system.
What is included in the outdoor substation version of the PCS?
The inverter, step-up transformer and medium voltage switchgear assembly, supplied together. Such a set shortens design and construction of the substation of a large PV plant.
What conversion topology is used in PCS inverters?
A three-level topology on a module that combines an RB-IGBT and a conventional IGBT in one housing. PWM voltage harmonics in it are half as large, so losses in the output filter are also smaller.
How are PIS series inverters configured?
For the PIS series the manufacturer offers a loader for Android devices. Through it the inverter is configured and serviced at the installation site.
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