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LUT University

Junior researchers (doctoral students) in electrical engineering and mechanical engineering

Unspecified
Tallenna suosikiksi Luo Paikkavahti

Tietoja työnantajasta

LUT University has been a pioneering scientific university, bringing together the fields of science and business since 1969.

Käy työnantajan sivulla

The LUT School of Energy Systems (Departments of Electrical Engineering and Mechanical Engineering) is looking for junior researchers in the following fields:

  • electrical drives technology
  • control engineering and digital systems
  • power electronics
  • machine dynamics

The Departments of Electrical Engineering and Mechanical Engineering are responsible especially for research and education in high-speed machine technology, advanced electrical drive systems and power electronics, active magnetic bearings and digital systems, as well as rotordynamics and the mechanical design of electrical machines. 

The positions are funded by the Academy of Finland and LUT University. They are related to the Academy of Finland’s Centre of Excellence in High-Speed Electromechanical Energy Conversion Systems (HiECSs) and LUT University’s research platform Integrated Energy Conversion Machinery (INERCOM). This means that the junior researchers will work together, applying their wide-ranging expertise to develop high-performance electrical drives systems for industrial and mobile applications. 

The duties of the positions may also include daily activities of the research team, such as supervision of trainees and undergraduate students and assistance in teaching.

Other qualities needed in the positions:

  • Innovativeness: applicants should be ready to propose their own ideas in the field of study or new ways of analysing, simulating, designing or controlling electrical actuators.
  • Independence and self-motivation: applicants should be able to conduct a significant share of their research independently
  • Motivation for publishing: doctoral students are expected to publish several scientific papers on their research topic during their doctoral studies.

The main communication language is English. Therefore, the applicants are expected to have good verbal and written communication skills in English.

We have five positions available for applicants with the different study backgrounds and interests. Each position is described below in detail. 

Positions 1 and 2: rotordynamics of high-speed electrical machines

In both positions, the researcher’s main task will be to conduct research for a doctoral dissertation in the field of rotordynamics of high-speed electrical machines. 

Research in position 1 will concentrate on:

  • the development of rotordynamics modelling methods for rotor–bearing support systems
  • vibration measurements and parameter identification
  • the effect of manufacturing non-idealities on rotodynamic behaviour
  • accounting for electromagnetic and thermal interactions in rotordynamics.

Research in position 2 will concentrate on:

  • rotordynamics and the control of active magnetic bearing (AMB) supported systems
  • reduced order modelling (ROM) of AMB-supported rotor systems
  • system identification
  • multiphysics optimization of AMB-systems (including touchdown bearings)
  • different control methods of AMBs and their effect on rotordynamics.

Applicants are expected to have expertise in one or more of the following areas:

  • dynamics and control
  • rotordynamics
  • finite element method
  • electromechanics and electrical drive systems.

Further information

Position 3: power electronics

Research in this position will deal with high fundamental frequency power electronics (up to 3 kilohertz). The goal is to develop methodology to evaluate the performance of different converter solutions and thereby find the most suitable solution for different applications. To carry out the work successfully requires 

  • a good understanding of power electronics and especially wide band gap (WBG) semiconductor applications.
  • advanced knowledge of one or more of the following areas of power electronic converter design:
    • thermal modelling and cooling of power semiconductors
    • power electronics induced electromagnetic interference (EMI) and corresponding preventive filtering solutions
    • control of semiconductors
    • modulation methods
  • basic knowledge of electrical drives
  • experience in the related modelling tools MATLAB/Simulink, PLECS and PSpice. Experience in using Ansys is seen as a benefit.

Further information 

Position 4: electrical motor design 

The researcher’s main task will be to conduct research for a doctoral dissertation in the field of high-speed electrical machines, combining the study of high-frequency effects on machine performance, the optimization of the machine structure/materials/geometry to achieve the highest efficiency level, the thermal management of machines, and advanced electrical machine simulation methods.

We expect you to have a good understanding of electromechanics, electrical drive systems, and electrical motor topologies. This position will require advanced knowledge of the design of high-speed electrical machines.

Applicants need to understand finite element method simulation tools and have experience in using them for electric/magnetic/thermal analysis. Further, applicants should have a basic understanding of rotor dynamics, power electronics, and control principles to communicate with other experts on the project.

We offer encouraging and supportive supervision and research collaboration by Professor Juha Pyrhönen and Dr Ilya Petrov.

Further information: 

Position 5: control 

Research in this position deals with active magnetic bearing control for high-speed machines.  

The Laboratory of Control Engineering and Digital Systems is looking for a doctoral student. The laboratory operates under the Department of Electrical Engineering, which has a long history and strong background in the development of electrical drives and their control for special industrial applications. A motivating example of such applications is a high-speed drive designed for demanding industrial applications where a high-speed machine with an active magnetic bearing supported rotor system is applied instead of traditional solutions. In these applications, embedded intelligence has an important role in providing a stabilizing control solution, but it also offers possibilities for more advanced routines.

The research will focus on the development of intelligent control, diagnostics, automatic commissioning and modern data analytics routines for modern high-speed electrical drive applications. Applicants are expected to have a background in both control and electrical engineering. However, motivated candidates with a strong background in electromechanics or mathematical modelling may also be considered for the position. The selected applicant may also participate in research on the advanced data-based modelling and control of various high speed drive applications. 

The selected applicant would mainly focus on research on active magnetic bearing technology based machines – specifically on the development of advanced MIMO control routines to stabilize the rotor system under time-varying operating conditions.

Further information

Requirements 

Applicants must have a Master’s degree or the equivalent in a relevant field (e.g. energy, thermal, mechanical or process engineering) and the ability and motivation to complete the doctoral studies within the normative duration of the studies for the degree (i.e. four years). An employment contract can only be concluded if the applicant obtains the right to pursue doctoral studies at LUT University. 

The employment will start as soon as possible with a one-year term including a six-month trial period, and it can be extended for another three years provided that the studies have progressed satisfactorily.  

Salary 

The salary is based on the current collective agreement for Finnish universities. The typical gross annual starting salary for a junior researcher is around 30 420 euros (plus a holiday bonus). 

Applications 

Please submit all the application materials in English:

  • A motivation letter: an account of your merits and activities of significance to the vacancy (max. two pages)
  • Your curriculum vitae
  • A copy of your degree certificate. If the original documents are not in English, Finnish or Swedish, each document must be accompanied by an official certified translation into English or Finnish.

Please specify the position for which you are applying.

The deadline for application is 9 January 2022 at midnight, Finnish local time (UTC +2). Please submit your application together with the required attachments through the university’s online application system. 

Join our team of trailblazers. Clean energy, water and air are life-giving resources for which we at LUT University seek new solutions with our expertise in technology and business. We help society and businesses in their sustainable renewal. Our international community consists of 6500 members. Our modern campuses are in Lappeenranta and Lahti. Video of our strategy: https://youtu.be/PpFawdT8CDE 

Technical support for using the recruitment system: recruitment@lut.fi

LEAVE AN APPLICATION

Application period starts: 2021-12-10 10:00Application period ends: 2022-01-09 23:59

Lisätietoa työpaikasta

Otsikko
Junior researchers (doctoral students) in electrical engineering and mechanical engineering
Työnantaja
Sijainti
Skinnarilankatu 34 Lappeenranta, Suomi
Julkaistu
2021-12-10
Viimeinen hakupäivä
Unspecified
Työpaikan tyyppi
Tallenna suosikiksi Luo Paikkavahti

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Tietoja työnantajasta

LUT University has been a pioneering scientific university, bringing together the fields of science and business since 1969.

Käy työnantajan sivulla

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