Location: Fort Meade, MD
Salary: $70.00 USD Hourly - $72.00 USD Hourly
Description: Our client is currently seeking a Electrical Engineer, Motor Controls and Power Conv
Job Code: Electrical Engineer (Motor Controls And Power Conv.) Work Location: Hanover, MD Duration: 6 months, contract to hire Duties And Responsibilities - Apply specific expertise to development of low to high power motor controls, drives, active front end rectifiers, other power conversion and supporting components.
- As a system or subsystem lead, responsible for producing significant portions of individual project electrical and control system designs; may also be expected to lead, supervise, and mentor small teams of senior and junior electrical engineers in pursuit of associated project objectives.
- Given incomplete, high-level requirements for a system or subsystem of moderate complexity, generate proper designs and work to complete tasking with latitude to make decisions under minimal supervision - individually and in a teamwork environment.
- Exercise excellent technical judgement, creativity, and initiative with attention to detail consistently throughout your work product, with attention to the "system" perspective.
- Prepare and participate in regular design reviews.
- Work closely in concert with mechanical, software, and systems engineers, as well as other cooperative disciplines, to solve problems and constructively architect a working system.
- Supervise/mentor junior engineers or technicians, when necessary.
- Responsible and accountable for your results, working with considerable autonomy, but also knowing when to ask for assistance.
- Desire to stretch and expand your talents, expertise, competency, and responsibilities.
Qualifications
ESSENTIAL: - Bachelor of Science or advanced degree from an accredited university in Electrical/Electronic Engineering (or related field/curriculum having an Electrical concentration, such as Computer Engineering or Robotics Engineering). Significant commensurate experience may be considered.
- Minimum 10 plus years practical technical experience with focus and demonstrated expertise in custom-made (high-power) motor controls and other power conversion subsystems development, analysis, simulation, design, control, programming, layout, construction, troubleshooting, and testing.
- Ability to obtain and maintain a United States Government Department of Defense Security Clearance (active clearances preferred, but not prerequisite)..
PREFERRED: - 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.
- Precise sensorless and sensored commutation/rotor angle sensing techniques.
- Detailed analysis, modeling, and simulation of motors and motor controls in time domain, frequency domain, continuous and discrete.
- Precise torque, speed, and position feedback control under varying loads.
- 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).
- Inverter topologies, state-of-the-art power device selection.
- Power electronics design and component selection, including high-power IGBTs and MOSFETs, SiC, and associated drive, level-shifting, filtering, isolation, switching, sensing, common-mode effects, etc.
- Application of similar principles to high-power active front end rectifiers for efficient, near-unity-power-factor, low-harmonics, AC-DC power converters, and complex interactions between front end and inverter(s).
- Compact, optimal layout of motor control and drive circuitry (low- and high-power sections) on printed circuit boards for minimal noise, EMI/EMC, as well as heatsinking.
- Good electrical drawing/drafting skills - accurately create and read detailed schematics, wiring diagrams, cable drawings, system cabling and block diagrams, etc.
- Proficiency in proper use and application of various standard motor and electronic test equipment, e.g., dynamometers, VOM/multimeters, oscilloscopes, power analyzers, spectrum analyzers, "hipot" insulation testers, communications analyzers, etc.
- Proficiency with advanced Computer Aided Design (CAD), Simulation, and Analysis software packages such as Altium Designer, SPICE, AutoCAD, SolidWorks, MathCAD, MATLAB, etc.
- Proficiency with common office productivity software such as Microsoft Word, Excel, and PowerPoint, etc.
- Good written and oral communications skills, including ability to effectively document, convey, and present engineering concepts and products to team members and customers.
ADDITIONAL: - Experience in the marine (surface or, preferably, underwater) industry and associated technologies, including ROVs, AUVs, and related robotic and electromechanical systems.
- Experience with ground-fault (and other fault) monitoring and interruption for safety, especially in the marine, shipboard and underwater environment.
- Applications with electronics (entire motor controller) immersed in oil, potentially under high-pressure.
- Motor design and construction (housing, bearings, seals, stator, rotor, windings).
- Experience with low-medium voltage, single- and 3-phase power systems (120, + VAC).
- Experience applying machine safety systems and standards.
- Good practical technician skills (assembly, wiring, soldering, cabling, etc.).
Ability and flexibility to travel on occasion, typically pre-planned for up to one to two weeks at a time; may be within the US, outside the US, or offshore, onboard a boat.
Medical, dental, and vision insurance are available to qualified candidates who meet eligibility requirements.
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