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European Clean Sky Project (FP7) – I-PRIMES

31 Dec 15
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I-PRIMES: Intelligent Power Regulation using Innovative Modules for Energy Supervision

JTI-CS – Joint Technology Initiatives – Clean Sky
from 2012-06-01 to 2014-12-31

I-PRIMES is a European FP7-JTI project of the Clean Sky research program, in the Aeronautics sector.

The participants to the project:

  • University of Campania “Luigi Vanvitelli”;
  • Aeromechs: whose brothers Rubino Guido and Luigi were responsible for the design, construction and testing of hardware and firmware codes of the SSPC (Solid State Power Controller) designed.

All parts of the project have been developed and implemented at the Rubino brothers’ laboratory, now RubinoLab.


Test of the I-PRIMES device:


The main objective was the development of a hardware/software device capable of implementing an innovative energy management system (I-LPM) for an aeronautical power grid.
I-PRIMES is an advanced “intelligent” system for electrical loads, which optimizes consumption and uniforms energy demands in transient periods of power or when an electrical failure occurs.

The system uses a modular structure.

Each cell consists of a programmable device, an interface stage and an innovative power unit that implements a filtering technique on the 270Vdc line of small dimensions.
The “master” module was able to implement I-LPM and communicate the energy management strategy to the “slave” modules via CAN-BUS 2.0B. Some “slave” modules are “fixed power”, others with “variable power” to reduce consumption.


  • Nominal voltage: 270V (DC)
  • Maximum single cell power: 15kW
  • Operating modes: ON / OFF – buck converter
  • Line filters DC bus 270V @15kW
  • CAN-BUS 2.0

TEST: RIG SAFRAN (Tolouse-Paris).

Invitations and presentations of the I-PRIMES project

  • CIRA “Italian Aerospace Research Center” of Capua (12 Giugno 2014). Presentation of the I-PRIMES device at the “Clean Sky GRA Annual Review” meeting. During the meeting, the functions of the I-PRIMES device were shown in a conference room with a real-time demo to the Clean Sky project managers and executives of companies in the aeronautics sector.


  • Stand “Clean Sky” al 49th Farnborough International Airshow (18 lug 2014 – 20 lug 2014). Selected to show and demonstrate the functionality of the I-PRIMES device.


An upgrade of the project I-PRIMES with hardware/software extension is an EPC (Electrical Power Center) that is been projected and realized for “PERMIT TO FLIGHT LEVEL”.

LLC resonant converter

08 Feb 14
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On this page presents several photos of a prototype and experimental tests of a 3kVA bidirectional resonant DC-DC converter, made for research activities.


The work was commissioned by AIRBUS, a major European company operating in the aerospace and defense sector, and was part of the doctoral thesis of Luigi Rubino, a member of RubinoLAB. The converter is an evolution compared to the classic hard-switching converters in which we participated in 2008-2009 for a European project called “Moet” More Open Electrical Technologies.

The LLC converter, required many hours of work to develop all the mathematical models before the realization taking into account also the parasitic effects of the components. Furthermore, all the parts that are difficult to find, such as transformers, resonant capacities, high thickness copper PCBs, MOS drivers for frequencies up to 300kHz, measurement and control boards have been realized in our laboratories and compared with mathematical models. The result, the measurements are identical to the simulations.

Particular design accuracy was given to the resonant transformer and to the resonant capacities not found by the component distributors.

Only the magnetic parts were purchased for the transformer, while the coils are suitably machined copper plates isolated from each other.


The resonant capacities at the primary and secondary are the most critical components in the system, since they must keep the value stable even when the working temperature changes. A minimal variation in the capacity value varies the resonance frequency of the circuit and therefore we will no longer have the maximum power transfer. The number of SMD capacity to be parallelized was chosen keeping in mind the capacity value and the working current.


To evaluate the correctness of the parameters of the entire circuit, a LabView interface was created where it was possible to characterize the resonant circuit by varying the circuit frequency.

Figure shows the prototype during the test phases.

In the video we can see the typical measurements with varying working frequency.

Scientific articles:

  1. Complementarity Model for Steady-State Analysis of Resonant LLC Power Converters
  2. LLC resonant converters in PV applications comparison of topologies considering the transformer design


01 Jan 00
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Focusing on the customer

RubinoLAB aspires to become a leading company in the provision of electronic services and solutions.

The company is made available to customers to provide a customized service in order to get the maximum in the areas of:

  1. Design, Qualification, Industrialisation, Redesign
  2. Prototyping, Production, Testing
  3. Purchase and Material Management
  4. After-sales Service

Actualisation of our clients’ ideas and projects

Development and industrialization

01 Jan 00
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Engineering Services:

  • Reverse Engineering
  • Design upon customers specifications
  • Prototyping
  • Product Industrialization
  • Production Testing
  • Hardware & Software Engineering

Hardware Engineering:

  • Analysis of Specification
  • Design of Schematics for Electronic Board with dedicated software
  • Design of Digital and/or Analogic boards
  • Design of PCB
  • Testing and troubleshooting
  • EMC for systems and subsystems
  • Design of board mechanics and external enclousures
  • Documentation

Software Engineering:

Software Development Activities

  • Requirements Analisys
  • Architecture Design
  • Detailed Design
  • Coding & Test
  • Integration
  • Qualification Test

Different MCUs Architectures: Microchip, Atmel, ST, Texas, etc


01 Jan 00
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A small collection of projects developed by RubinoLAB.

European projects


Industrial projects


Prototype projects


Various projects

CAN-ISO projects (Universal interface CAN-BUS “isolated galvanically”)