ESPC 2016 - FINAL PROGRAMME

The final programme with the detailed content of all technical sessions is available below:

Download Final Programme
Last updated: 16 September 2016

The opening plenary session will feature speakers from different worlds but of equal high interest:

  • Dr. Konstandopoulos, Director of CERTH, will present the activities of his Research Centre
  • Dr. Hamada, Project General Manager, Power Electronics Development Div., Toyota Motor Corp. (J), will provide the audience an insight on the challenges of power management of hybrid cars and of associated power components. Please view here the abstract Power Electronics technologies for Environmentally friendly Electrified vehicles.
  • Francis Anghinolfi, from CERN, will explain how the radiation environment in CERN experiments and accelerators is coped with, thanks to the radiation hardness techniques employed, for electronics in general and for power systems in particular
  • Dr. Ambrosi, from the Department of Physics and Astronomy of the University of Leicester, will update the participants on the current status of nuclear space power sources with a special focus on the European activities in the field
  • Jan Van Casteren, from ESA, will describe the BepiColombo mission to Mercury and its considerable challenges, with a special zoom on power aspects and solar generator technology

Tutorials, Workshops and Round Table

The following events are programmed to take place as part of the ESPC 2016:

Tutorial “Space Power Basics”

Presenters (ESA): Henri Barde, Arturo Fernandez, Max Schautz, Keith Stephenson, Stephen Taylor
Duration: four slots of 1.5 hour each
Target audience: participants not belonging to the space domain who want to learn about its specificities and participants who already work in a certain discipline of space power and want to enlarge their view.

Summary content: 

  • System level aspects (mission requirements, orbits, environments,…) and resulting selection of Power Systems architectures and topologies
  • Power conditioning, conversion and distribution electronics
  • Solar Generators and Nuclear Power Sources
  • Electrochemical Energy Storage

Tutorial “Power System Passivation at End of Mission”

Presenter: Christian Elisabelar (CNES)
Duration: two slots of 1.5 hour each
Target audience: participants who are involved in power system design and/or operations and need to have a clear understanding of the requirements for end of life passivation

Summary content:

  • Space debris mitigation / French law LOS 
  • Specifications and guidelines 
  • Electrical passivation : interpretation of requirements, applicability, global implementation 
  • Electrical passivation : made by spacecraft control / operation 
  • Electrical passivation : Implementation by design (some example, studies reports…) :
  • Battery disconnection 
  • Solar Array disconnection 
  • Qualification aspects 
  • Safety / Reliability
  • Safe state of the Battery in disposal phase 
  • Discussions 
  • Perspectives

Tutorial “GaN for power applications”

Presenter(s): Iain Thayne, School of Engineering, University of Glasgow (UK) and
Victor Veliadis, CTO, Power America (USA)
Duration: two slots of 1.5 hour each
Target audience: Power electronics designers who want to learn more about the state of the art and perspective of GaN and SiC technology.

Summary content:
Please follow this link.


Workshop on “Modelling of Solar Cell Degradation in Space due to particle irradiation”


Organiser: Carsten Baur (ESA) + Phil Jenkins (NRL)
Duration: two slots of 1.5 hour each
Target audience: Solar Cell, Photovoltaic Assembly and Solar Generator
manufacturers as well as solar generator and power system engineers
performing degradation modelling of solar cells due to particle irradiation;
everyone that is interested to learn and/or discuss about the different
approaches and difficulties in this field.

Summary content:
The workshop will start with an introduction on the
different methods that are typically used for the predication of solar cell
degradation. Pros and Cons of the different methods will be discussed. It is
planned to have presentations from different entities who describe their
procedures for arriving at remaining factors for a given particle
environment.
Specific topics that will be addressed are:
  • Comparison of the JPL and NRL method: which method is used and accepted? Can we consider both methods to be equivalent?
  • Both methods were developed initially for single-junction cells. What problems, if any, do we have when applying those methods to multi-junction solar cells?
  • Which models are used for the conversion of a particle environment into an equivalent 1MeV electron fluence or an effective dose (SPENVIS, SCREAM, OMERE, ...)?
  • What do we do when we obtain different results by applying different methods? - in other words, what is the accuracy of the models and what level of discrepancy would be acceptable?
  • What is the minimum data set required for applying either of the two methods?
Comparison of requirements given in standards (ECSS, AIAA)


Workshop “on the use of commercial components”

Organiser: Christophe Delepaut (ESA)
Duration: two slots of 1.5 hour each
Target audience: designers of space power system equipment and of non-space power equipment or systems and their customers, interested in sharing their experience with the use of Commercial Off The Shelf parts/products and/or to learn more about the conditions of their use.

Summary content:
  • Component selection 
  • Component procurement
  • Reliability at equipment level
  • Component requirement specification and standards 

Round Table “Cost reduction for PPU's in Electric Propulsion”

Organisers: (ESA) Matthias Gollor, Andreas Franke, Ben Fallis
Duration: one slot of two hours
Target audience: Electric Thrusters (ETs) and Power Processing Units (PPUs) suppliers and their customers

Summary content: Electric Propulsion (EP) is entering increasingly into commercial and institutional space missions. The success of EP is strongly linked to a high degree of competitiveness in terms of cost. The PPU is typically challenged as a significant cost driver. The round-table shall outline the perspective/views of PPU suppliers and designers:
  • What can be done to make PPU more competitive?
  • Can be interface made more suitable?
  • Which promising technology elements need to be focused on in the future? 
  • Will modification of standards help?
  • What elements of technology roadmap can be useful?

Round Table “Experience Return on Maturity Margin for Operational Programs”

Organisers: (ESA) Gilles Beaufils
Duration: one slot of two hours
Target audience: Industry Primes, Space Agencies and Satellite Operators

Summary content: Initial Mission Power Budget shall include a maturity margin for each unit, which is scaled according the unit development status, but is never less than 5% per norms. An experience return study has been led by ESA with Airbus Defence and Space and Thales Alenia Space on a very large sample of projects (more than 100 units on more than 10 different spacecrafts for both Primes). Those studies tend to confirm that individually, the normative margins are quite adapted, but their direct sum in the total budget leads to a generally excessive reserve. However, large "accidents" happens, and can only be absorbed by a margin redistribution.

On a recent ESA project, it was recognised at an early stage that reducing a little the mission coverage during the short eclipse season, or alternatively reducing the power budget margins, was highly simplifying the spacecraft design (no need for Solar Array deployment). The risk was accepted at the highest level to proceed with reduced maturity margins, taking into account the available measured data on several previous implementations of the same avionics. Post CDR status is that the approach is winning: no restriction should be needed in the end. The experience return is nevertheless that the reduced maturity margins on the well-known recurrent units has reduced the global margin, then passed a stress on taking into account more exactly the baseline (un-marged) values (unit mode, temperature effects) and "realistic margins" on the power budget of thermal control, the AOCS and the inter-subsystem correlations (e.g. the pointing for which the Solar Array produced the less energy is always associated with a specifically high AOCS budget but a minimum thermal budget). 

  • Is the present norms on maturity margin adapted?
  • Is the present norms on maturity margin summation adapted for operational program?
  • Does a margin expressed in some % meaningful for a unit that accounts for 10W or less?
  • Does reduced maturity margins worth when considering the need of a consistent efforts in being more accurate on the un-marged values, inter sub-system correlations, and statistics driven budget lines as AOCS, and thermal?
  • Does not reduced maturity margins imply to introduce a minimum "system development margin" (i.e. distinct from the system margin which is reserved for flight).

Round Table “Fuel Cells for Space Exploration”

Organisers: (CERTH) Stella Balomenou, (ESA) Max Schautz
Duration: one slot of two hours
Target audience: Space Exploration sector, Electric Propulsion sector, Industry Primes, Space Agencies

Summary content: Future exploration missions are expected to have increasingly demanding operational requirements. Generating electrical power, as well as maintaining a specific thermal environment, are both critical capabilities for any mission. Within the ESA TRP, GTF and ARTES 5 programs activities have been undertaken to develop and test elements of a fuel cell system to compliment or even replace batteries in future robotic and human exploration missions, also leveraging in situ resource utilization (ISRU). In parallel, European Commission together with industry in the public private partnership of FCH JU, have largely invested over the last 10 years in fuel cell and hydrogen energy technologies for meeting the needs of transport and energy sectors. 
The round-table shall outline the perspective and views of technology developers and system integrators in the following issues:
  • Catalogue of available or potential components at the desired maturity level
  • Which technology elements need to be focused on in the future? 
  • What needs to be done to increase technology readiness level?
  • How lessons learned from the latest European developments could be further exploited?


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