Introduction

Introduction

Combo (COMmercial Based cOnverter) family represents a family of Power Converter based on commercial units (off-the-shelves) only, integrated with other CERN elements. The main goal is to reproduce the same functionalities of a standard EPC Power Converter, recreating if required some interfaces and function.

Involved Peoples

Yves THUREL	CERN Project manager
Edwin ROHRICH	CERN Technical manager
Nicolas Kuczerowski [2019-2023]	CERN Project Leader

Range

Power Converter Architecture

A COMBO Power Converter is mainly used for Experiences or Test Labs to power warm or cold Magnets (or other type of load), for DC or slow cycling machine/use. Power Converter can be divided in 3 main parts:

• Power Part:
  • COMBO Power Rack (incl. COMBO elements like: AC & DC panels, Aux-DC power supplies box).
  • A commercial Power Source (single, series or parrallel configuration)
  • A COMBO Config Panel, interfacing CERN FGC Controller with commercial power source interface.
  • Some additional sensors (Voltage, Current) to add CERN required functionalities.


• CERN Digital Controller (FGC3):
  • The high level control from and to the Cern Control Room (using Ethernet+ bus)
  • The high precision digital current loop (when a voltage source is controlled)
  • Collecting and reporting all status, faults, and measurements from all the different parts to the remote services, for diagnostic and operation purposes.
  • Located inside a standard COMBO Crate (up to 3x controllers in one single crate).


• High Precision Current sensor(s) (DCCTs)
  • Measuring DC or pulse current at the required precision.

Power Converter simplified Architecture .vsdx