Abstract

Generalization of electromechanical actuators use in thrust vector control launchers applications has increased electronics power level needs by a factor of ten, in a global context which puts costs under pressure.The need for a modular and affordable power solution being versatile to fulfil different launcher mission profiles has become thereby stronger.In order to target different power and functional needs, an attractive design should be modular and multipurpose, will work at higher voltages and will be able to deliver powers up to a dozen of kilowatts.Moreover, an efficient design to cost approach will consider alternative technologies, widely used by other high-reliability industries, including Components Off-The-Shelf (COTS) integration.This paper presents the design of a low cost and highly integrated smart power module (SPM) intended to be used into launchers applications, embedding technologies and components from automotive world and being mainly producible by large-scale industry.

Highlights

  • The presented Smart Power Module (SPM) targets to drive motors but architecture and technologies are intended to be a future base element of a wider range of applications (DC/DC, DC/AC, satellite,...), its versatility being within others provided by embedded intelligence.The design must be compliant to specific launcher constraints: radiative environment, missions profiles, thermal interfaces and launchers applications specific fault-tolerance requirements.1.2

  • This paper presents the design of a low cost and highly integrated smart power module (SPM) intended to be used into launchers applications, embedding technologies and components from automotive world and being mainly producible by large-scale industry

  • H topology will be to manage star shaped An accurate current measure, several protections and embedded intelligence are associated to power electronics in order to satisfy to applications where control can be highly distributed : Figure 1

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Summary

Introduction

The presented Smart Power Module (SPM) targets to drive motors but architecture and technologies are intended to be a future base element of a wider range of applications (DC/DC, DC/AC, satellite,...), its versatility being within others provided by embedded intelligence. The design must be compliant to specific launcher constraints: radiative environment (mainly robustness to SEE, cumulated radiations being negligible), missions profiles (from several minutes into launchers lower stages and up to 30 hours into upper stages), thermal interfaces (from adiabatic conditions during several minutes to conductive interfaces during up to 30 hours) and launchers applications specific fault-tolerance requirements

Functional architecture
Main performance characteristics x Electrical characteristics
Thermal aspects
CONCLUSIONS

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