Electrical Engineer, Motor Controls and Power Conversion Specialist

Electrical Engineer, Motor Controls and Power Conversion Specialist

6 Month assignment with possibility for extension or conversion to full time employee

5/40

Maryland, United States

This opportunity sits within an engineering centre of excellence supporting advanced aerospace, defence, underwater robotic and electromechanical systems.

The role focuses on the development and application of high-power motor controls, drives, active front end rectifiers and power conversion systems, with involvement across design, build and test activity.

This position offers technically complex project work, close collaboration across engineering disciplines and the chance to contribute to one-of-a-kind systems solving demanding operational challenges.

Bachelor of Science or advanced degree in Electrical Engineering, Electronic Engineering, or a related discipline with an electrical concentration

• Minimum 10 years of practical technical experience focused on custom high-power motor controls and power conversion subsystem development
• Experience across analysis, simulation, design, control, programming, layout, construction, troubleshooting and testing of complex electrical systems
• Experience leading a system or subsystem scope and delivering significant portions of electrical and control system designs
• Ability to work effectively with incomplete high-level requirements and progress design activities with a high degree of autonomy
• Experience collaborating with mechanical, software and systems engineering teams on complex integrated systems
• Ability to supervise or mentor junior engineers or technicians when required
• Willingness and flexibility to travel occasionally, typically for up to one to two weeks at a time, including domestic, international or offshore travel

• Strong expertise in low to high power motor controls, drives, active front end rectifiers and associated power conversion components
• Expert understanding of three-phase brushless motors and controls models, including electrical, magnetic and mechanical behaviour
• Strong knowledge of dynamic flux estimation and transformations between stationary and rotating reference frames
• Experience with SVPWM and other advanced sinusoidal commutation techniques to minimise torque ripple and harmonics
• Experience with sensored and sensorless commutation and rotor angle sensing techniques
• Detailed capability in modelling and simulation of motors and motor controls in time domain, frequency domain, continuous and discrete systems
• Experience implementing motor controllers in embedded software or firmware using microcontrollers or DSP, including assembly language and C
• Knowledge of digital filters, phase-locked loops, inverter topologies and power device selection
• Power electronics design capability including IGBTs, MOSFETs, SiC devices and associated drive, isolation, filtering, sensing and switching considerations
• Experience with AC-DC power converters, near-unity-power-factor active front end rectifiers and interaction between front end systems and inverters
• Ability to produce and interpret detailed schematics, wiring diagrams, cable drawings and system block diagrams
• Practical proficiency with test equipment including dynamo meters, multimeters, oscilloscopes, power analysers, spectrum analysers, insulation testers and communications analysers
• Proficiency with engineering and design software such as Altium Designer, SPICE, AutoCAD, Solid Works, MathCAD and MATLAB
• Strong written and verbal communication skills with the ability to document and present technical concepts clearly

Ability to obtain and maintain a United States Government Department of Defense Security Clearance

• Experience in marine, surface or underwater technology environments, including ROVs, AUVs and related robotic or electromechanical systems
• Experience with ground-fault monitoring, fault interruption and electrical safety in marine, shipboard or underwater environments
• Experience with electronics immersed in oil and operating under high-pressure conditions
• Knowledge of motor design and construction including housing, bearings, seals, stator, rotor and windings
• Experience with low- and medium-voltage single-phase and three-phase power systems
• Experience applying machine safety systems and standards
• Good practical technician skills including assembly, wiring, soldering and cabling

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