Subject of thesis :
Sizing of a power converter taking into account the electromagnetic compatibility aspect (emission and susceptibility)
Context
The advent of power choppers has led to optimisation of the products and their performance, but means that large currents have to be switched more and more quickly, at increasingly high voltages.
This generates a great deal of electromagnetic interference over a very wide spectrum. Controlling these disturbances is becoming very complex in a constrained environment of standards and dimensions.
At the same time, standards have long been defined for applications currently in use in aircraft with low voltages and low power, and/or with low switching frequencies.
The transition to electrification certainly offers many opportunities, but these standards are becoming very restrictive in terms of the new products to be developed, particularly (but not only) in terms of radiated or conducted emissions.
The thesis will be carried out as part of a project funded by the DGAC and in partnership with a company.
The challenges of the thesis
The challenges of the thesis are as follows:
- To reduce conducted and radiated electromagnetic interference generated by power converters
- To improve the internal immunity of converters to electromagnetic interference; in fact, the control electronics of power components can themselves be disturbed by the parasitic emission of the latter
- To have converters that meet aeronautical standards in terms of EMC and network quality, in particular the DO160 standard, while minimising the size of the filters used to meet power density targets
- Transfer EMC modelling and measurement skills to designers, enabling them to develop a compliant and optimised product from the first iteration onwards
The PhD student will be enrolled in the Matisse doctoral school (INSA Rennes). The thesis will be carried out at ESEO in Angers.
Start date: as soon as possible
Profile: Master’s degree in electrical engineering or power electronics and/or EMC
Would you like to join our research teams and apply? Send your application to the thesis director, enclosing:
- CV in English,
- Covering letter in English,
- Transcript of grades and Master’s ranking
Address to be used:
Seeking a Candidate (M/F) for a PhD Thesis
We are actively looking for a potential student holding a Master’s degree or equivalent, or who expects to obtain it by September 2024, interested in pursuing his/her doctoral studies.
Context
“Sizing of a Power Converter Considering Electromagnetic Compatibility (Emission and Susceptibility) Regulations”
The advent of power converters has optimized products and their performance but involves increasingly rapid switching of significant currents with correspondingly higher voltages. This generates numerous electromagnetic disturbances across a broad frequency spectrum. Managing these disturbances becomes highly complex in a constrained normative and dimensional environment.
Concurrently, standards have long been defined for applications currently in use in aircraft with low voltages and low power, and/or with low switching frequencies. While electrification offers many opportunities, these standards become very restrictive for new product development, particularly regarding radiated or conducted emissions (but not exclusively). The thesis will be conducted as part of a project funded by the DGAC (a French civil aviation authority) and in partnership with a French company.
Thesis Objectives
The objectives of the thesis are as follows:
- Reducing conducted and radiated electromagnetic disturbances generated by power converters.
- Improving the internal immunity of converters to electromagnetic disturbances; indeed, the control electronics of power components can be disrupted by their parasitic emissions.
- Developing converters that meet aeronautical standards in terms of EMC and power quality, particularly the DO160 standard, while minimizing the size of filters used to achieve power density targets.
- Transferring EMC modeling and measurement skills to designers, enabling them to develop a compliant and optimized product from the first iteration.
The PhD candidate will be enrolled at the Matisse Doctoral School (INSA Rennes). The thesis will be conducted at ESEO in Angers, France.
Start date: as soon as possible
Profile: Master’s degree (or equivalent) in Electrical Engineering or Power Electronics and/or EMC
Should you be interested in this position and joining our research teams, please email your application to the supervisor at Mohamed.ramdani@www.eseo.fr, including:
- CV (in English),
- Cover letter (in English),
Transcript of records and ranking in Master