FRIEM’s rectifier systems

We provide complete conversion systems, including rectifiers and all equipment, perfectly tailored to your needs.

FRIEM rectifier systems are designed to operate in the most challenging conditions while maintaining high efficiency over a long time.

The design is optimised both for diode and thyristor rectifiers.The digital current regulator DRP 7.0, designed and manufactured entirely by FRIEM, yields the highest reliability, safety and overall performance.
Additionally, after the equipment’s delivery, we provide lifetime service assistance.

Un container bianco sollevato da una gru presso un impianto industriale, con un camion rosso e strutture industriali sullo sfondo

Vista di un'unità industriale FRIEM con componenti per la conversione energetica e connessioni elettriche

Features

Customised solutions

Flexible and modular design

High efficiency

Containerised solution

Lifetime plant support

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How can we help you?

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Contact us

How can we help you?

Fill in the form, we will be happy to support you!

DRP 7.0

DRP 7.0 digital regulator
for rectifier systems

The latest generation of FRIEM current-voltage digital regulator is suitable for each rectifier’s topology (bridge or double star) and technology (thyristors or diode with saturable reactors).

Integrating the most recent electronic technologies, DRP 7.0 is a versatile, efficient and fast full-digital regulator. New dedicated functions address the degraded conditions of the rectifier (i.e. lack of feedback or reference signals) by instantaneously swapping between failed and valid signals.

Our 7.0 digital regulator marks a milestone, signifying seven decades of excellence at FRIEM.

Key Benefits

FRIEM industrial design

DRP 7.0 is designed for industrial applications. It is ideal for intensive processes requiring high direct current such as in chemical, mining and electrolysis industries, ensuring both optimal operation and protection against electrical faults.

Flexible

DRP 7.0 has a very flexible architecture in all its functionalities. It can be customised to fit the most demanding processes in terms of the speed and stability of DC current and voltage and can be fine-tuned during the lifecycle of the plants.

Innovative and intuitive

DRP 7.0 has been designed by FRIEM’s R&D engineers to improve the overall functionalities of the rectifier.

Easy to upgrade

DRP 7.0 is equipped with spare hardware and software inputs and outputs, besides a customisable firmware structure, so it can be upgraded with new functions without changing the hardware.

Features

Specific for rectifiers

A single control board manages bridge or double-star converter topologies with thyristor or diode with saturable reactors.

Simple to use and easy to set up, providing a dedicated HMI graphic 4.3” touch screen.

Thanks to a retrofit kit, replacing the old regulator is now fast and simple.

A dedicated software tool (MS Windows platform) allows remote support, assistance and firmware upgrade.

All measures can be easily shared over Ethernet/Internet and stored for data visualisation/analysis.

A cascade structure (voltage/current/angle loop) with reference/limitation signals is always accessible and adjustable at runtime.

PLL algorithm included for precise grid angle detection in the presence of voltage harmonics as well.

Provides instantaneous switch to a secondary feedback signal or trip with controlled angle ramp down.