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R&D Power Converter Controls/Power Electronics Engineer (2021)

Location: 

Saginaw, MI, US

Division:  North America (NA)
Req ID:  42976

We are looking for a highly self-motivated individual who is ready to take on a technology development and innovation role. The candidate should possess good attention to detail, good mentorship ability, be creative, and possess good time management skills. This position is for research and development, including modeling, simulation, analysis and verification, of electric drive systems (power electronics focused), and enforcing the technology development process for various technical projects from research through production implementation. This position allows the candidate to advance the power electronics technology roadmap that both supports the existing Nexteer product line and enables expansion for the next generation products. 

 

This role is focused on development of high voltage, high power electric motor drive systems for electric and hybrid vehicle propulsion applications. The ideal candidate would possess strong technical skills that encompass multiple disciplines including familiarity with electromagnetics, electric machine design, power electronics layout, and motor drive control system modeling and design.  The candidate would also be responsible for developing verification setup for high voltage, high power motor drive systems, supporting the organization for all areas in power electronics development, and developing new power converter control algorithms.

 

Description

 

  • Responsible for power electronics system analysis, modeling, and design for electric and hybrid vehicle propulsion applications.
  • Design and implements control algorithms for various power converter topologies including two-level and multi-level converters.
  • Adapts and invents new power converter commutation/switching techniques including space vector pulse width modulation, overmodulation techniques as well as six step commutation.   
  • Develop inverter models and perform loss analysis and obtain efficiency maps including various semi-conductor switches (MOSFET, IGBT, SiC, GaN).
  • Responsible for developing sizing tools for power converters based on system performance and cost models.
  • Develops mathematical models for power converter modules and auxiliary circuitry for various electrical machines including induction machines, synchronous machines (PM and reluctance), switched reluctance and flux switching machines and multiphase machines.
  • Collaborate with electrical hardware, electromagnetics, mechanical and motor control teams to understand the requirements for the development of efficient motor drive system
  • Designs and optimizes simultaneous system performance goals through requirements flow down. Understands and creates system and subsystem specifications.
  • Enforcing the technology development process for technical projects from research through to production implementation.
  • Calibration, testing and validation of power electronic system requirements as well as diagnosing and correcting deficiencies in designs and prototypes.
  • Effectively integrates all aspects of a design through the use of multi-disciplinary engineering.
  • Stays abreast of new technology and recent developments and trends in the research and academic arena related to power electronics technologies.
  • Provides technical leadership for projects incorporating complex electromechanical (mechatronic) systems.

 

Job Requirements

 

Required Skills

  • Strong understanding of power electronics converter topologies (AC-DC, DC-DC, DC-AC) and power electronics theory.
  • Strong understanding and hands-on experience dealing with various semi-conductor switches (MOSFET, IGBT, SiC, GaN).
  • Excellent understanding, development and implementation of various PWM techniques (SPWM, DPWM, CPWM, Six-Step etc)
  • Excellent understanding of semiconductor non-idealities, losses and loss modelling.
  • Experience developing loss mitigation algorithms targeting inverter efficiency.
  • Basic understanding in gate drive design and calibration for various semi-conductor technologies.
  • Strong knowledge in power electronics simulations tools (PSPICE, Matlab/Simulink).
  • Strong understanding of schematics and PCB layout.
  • Strong background in control theory and signal processing.
  • General competency in all core fields (electronics, electromagnetics, computer hardware and software).
  • Knowledge of system synthesis, analysis and verification techniques.
  • Proven ability to create new products, algorithms, and systems through innovation.
  • Excellent problem definition and solving techniques as well as good organization and documentation abilities.
  • Demonstrated ability to work independently and with others.
  • Must be able to sit and stand for extended periods of time.
  • Must be able to look at computer screen/monitor for extended periods of time.

Preferred Skills

  • Background in automotive engineering and chassis systems (traction/propulsion, steering, braking, suspension).

 

Preferred Skills

  • 2 plus years working experience in high voltage lab testing environment
  • Experience testing traction inverters
  • Familiarity with high voltage safety training and testing standards

 

 

Education

M.S. plus 2 years professional experience (required) OR Ph.D. in Electrical Engineering (Preferred) with emphasis in Power Electronics, Electric Motor Drives or Control Systems


Nearest Major Market: Saginaw