Principal/Electrical Engineer: Power Systems for Space

    Northrop Grumman
    Dulles, VA
    Full-time, Part-time

    Job Description

    Since the dawn of the space age, Northrop Grumman has put innovative products and ideas into orbit, on the Moon, and beyond - from systems engineering, spacecraft manufacturing, precision sensors, space instrument design, ground stations development, and revolutionary launch vehicles. Help shape the future of Space exploration as an integral part of the Lunar Missions at Northrop Grumman.

    Join an organization working to put the first woman and the next man on the moon in 2024 and develop the next steps toward human space missions to Mars through our human habitat in cislunar space. At Northrop Grumman, we are launching careers into orbit.

    Job Description:

    Exciting opportunity to work on programs for cislunar or manned spaceflight in support of moon landing. Our engineers develop mathematical models and simulations for spacecraft electrical power system to support analyses required for power electronics hardware design and control software development, verification and troubleshooting.

    Specific Responsibilities:

    • Define the technical requirements and architecture for the simulation system
    • Develop, validate, and maintain simulation models of electrical power system component including solar array, lithium ion battery, electric motor and controller, and power electronics
    • Use simulation to support analyses (transient response, stability, fault coordination) and trade studies
    • Support defining requirements for hardware component, control software and interfaces
    • Use simulation to assess potential issues before physical parts are available for testing
    • Develop interfaces for processor-in-the-loop and hardware-in-the-loop simulators
    • Prepare test plans, test procedures, test cases, conduct unit to system level testing, and write test reports
    • Support development of control algorithms for power electronic systems

    This position can be filled at the Electrical Engineer level or Principal Electrical Engineer level depending on education and experience.
    Qualifications :

    Basic Requirements for Electrical Engineer:
    • Bachelors of Science Degree in Electrical Engineering
    • At least 5 years of Electrical Engineering experience.
    • At least 5 years of Power Electronics in combination of coursework and/or experience

    Basic Requirements for Principal Electrical Engineer:
    • Bachelors of Science Degree in Electrical Engineering
    • At least 9 years of Electrical Engineering experience.
    • At least 5 years of Power Electronics in combination of coursework and/or experience

    Preferred Qualifications:
    • Masters of Science degree in Electrical Engineering
    • Hands-on experience with power semiconductors and switched mode power conversion and their modeling, simulation and testing
    • Knowledge of fundamental power converter topologies
    • Strong understanding of switching waveforms, semi-conductor losses and experience with loss modeling
    • Solid understanding of the theory and application of magnetics in inductors and transformers for power conversion
    • Expertise in one of more of the following areas: solar based power system, lithium ion battery, electric propulsion system
    • Experience with power quality and EMI/EMC testing
    • Familiarity with functional specification, state machines, failure mode effect and criticality analysis and fault tree analysis
    • Strong model-based design and/or test background (e.g. Simulink, Simscape Power Systems, PSIM, SPICE, AMESim, Saber)
    • Development/operations of hardware-in-the-loop simulators, conducting testing and troubleshooting of hardware and software interfaces
    • Prior experience in any of the following areas is a plus.

    • Using Mathworks Simulink/Stateflow/Simscape and/or Saber.
    • Experience with MathWorks real time simulation operating system.
    • Experience with micro-grid, grid-connected power electronics, grid-connected batteries.
    • Working experience in current model control, compensation design and loop gain measurements.
    • Developing torque control techniques such as field oriented control, slip-based control, direct torque control {HLS}
    • Experience with various PWM schemes such as space vector, discontinuous, and sinusoidal modulation {HLS}

    Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO/AA and Pay Transparency statement, please visit www.northropgrumman.com/EEO. U.S. Citizenship is required for most positions.

    Posting ID: 556638804Posted: 2020-05-21