We are seeking an experienced Power Electronics Engineer responsible for leading the development and application of high-power, high-efficiency motor controls ,drives, and other power conversion systems.
Responsibilities
- Apply specific expertise to the development of low to high power motor controls, drives, active front end rectifiers, other power conversion and supporting components.
- Expert understanding and application of three-phase brushless motors and controls models, electrical, magnetic, and mechanical, including dynamic flux estimation and transformations between stationary and rotating reference frames.
- High-frequency space-vector pulse-width modulation (SVPWM) and other advanced techniques for efficient sinusoidal commutation, minimizing torque-ripple and excess harmonics.
- Efficient implementation of motor controllers with embedded software/firmware in microcontrollers/DSP, using low-level assembly language and C language, including implementation of digital filters and phase-locked-loops (PLL). Produces significant portions of individual project electrical and control system designs as the lead at the system or sub-system level.
- Create power electronics design and component selection, including high-power IGBTs and MOSFETs, SiC, and associated drive, level-shifting, filtering, isolation, switching, sensing, and common-mode effects.
- Ability to – given incomplete, high-level requirements for a system of sub-system of moderate complexity – generate proper designs and work to complete tasking with latitude to make decisions under minimal oversight, individually and in a teamwork environment.
- Prepare detailed analysis, modeling, and simulation of motors and motor controls in time domain, frequency domain, continuous and discrete.
- Accurately create and read detailed schematics, wiring diagrams, cable drawings, system cabling and block diagrams.
- Exercise solid engineering judgement, creativity, and initiative with attention to detail consistently throughout work product with attention to the “system” perspective.
- Prepare and participate in regular design reviews.
- Work closely and in concert with mechanical, electrical, software, and software engineers, as well as other cooperative disciplines, to solve problems and constructively architect a working system.
- May supervise the work of technicians and production personnel, while being accountable for results, work. Working with considerable autonomy but also knowing when to ask for assistance.
- May be expected to lead, supervise, and mentor a junior electrical engineer working of project objectives.
Job Qualifications
- Bachelor’s degree or advanced degree in Electrical/Electronic/Embedded Engineering with an emphasis on Power Conversion and Motor control
- Minimum 8+ years practical technical experience with focus and demonstrated expertise in custom-made (high-power) motor controls and other power conversion sub-system development, analysis, simulation, design, control, programming, layout, construction, troubleshooting, and testing
- Experience with Motor design and construction (housing, bearings, seals, stator, rotor, windings) is highly desirable
- Ability to create compact, optimal layout of motor control and drive circuitry (low- and high-power sections) on printed circuited boards for minimal noise, EMI/EMC and heatsinking
- Familiar with low-medium voltage, single- and 3-phase power systems (120V, 240V, 480V, 900V, etc.)
- Proficiency with advanced Computer Aided Design (CAD), Simulation, and Analysis software packages such as Altium Designer, LT SPICE, SolidWorks, Mathcad, MATLAB, etc.
- Good practical technician skills (assembly, wiring, soldering, cabling, etc.)
- Possess sensorless/sensored commutation/rotor angle sensing techniques
- Good written and oral communication skills, including ability to effectively document, convey, and present engineering concepts and products to team members and customers
- Ability to travel on occasion, sometimes without extensive notice