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National Renewable Energy Laboratory Fall Internship - Stability Analysis of Low Inertia Inverter-Dominated Power System in Golden, Colorado

Posting Title

Fall Internship - Stability Analysis of Low Inertia Inverter-Dominated Power System



CO - Golden


Position Type

Intern (Fixed Term)


Hours Per Week



Job Description

The Grid-connected Energy systems Modeling (GEM) group at NREL is seeking a fall intern in stability analysis of low inertia inverter-dominated power system topic area. Successful candidates will work on a DOE-funded project to address the challenge of 100% renewable integration. The ideal candidate will bring experiences in the modeling of inverter-based resources, stability analysis, grid-interactive control of power electronics converters and systems.

Successful candidates will join the GEM group in the Power Systems Engineering Center (PSEC) at NREL, a highly interdisciplinary and collaborative team of engineers, analysts, and software developers working to develop and apply state-of-the art energy system modeling techniques, software, and simulations for breakthrough engineering and techno-economic analysis of the emerging future electric grid and broader interconnected energy system: transportation, buildings, gas, communication/controls, and beyond. PSEC supports the science and technology goals of the U.S. Department of Energy, NREL, and industry partners toward a sustainable energy future. The center works with the electricity industry and broader research community to conduct high-impact research and development that provides practical solutions to grid integration challenges that enable sustainable energy systems. PSEC uniquely combines the most advanced research techniques with real-world experience for achieving sustainable electricity grids.

Job Duties and Responsibilities:

  • Modeling of low inertia inverter-dominated power systems considering the impacts of control dynamics.

  • Stability analysis of inverter-dominated power systems, such as solar and wind power plants, distributed generation (DG).

  • Grid-interactive control of inverter-based resources in both transmission and distribution power grids, e.g. Mode switch of grid-following and grid-forming operations, inertia emulation, and fault ride-through, etc.

  • Work effectively with interdisciplinary team of developers, engineers, and analysts


Basic Qualifications

Must be enrolled as a full-time student in a Bachelor's, Master's or PhD degree program, or graduated in the past 12 months from an accredited institution. Internship period cannot exceed 12 months past graduation. Minimum of a 3.0 cumulative grade point average.

Please Note:

•You will need to upload official or unofficial school transcripts as part of the application process.

•If selected for position, a letter of recommendation will be required as part of the hiring process.


Additional Required Qualifications

Well qualified candidates for this position will be enrolled in, or have recently graduated from a relevant Masters or PhD program.

Preferred Qualifications

Preferred Qualifications

  • Ph.D. in power systems, power electronics, or related fields.

  • Experience in dynamic modeling and control of inverter-based resources, include solar and battery energy storage.

  • Experience in modeling of grid-following and grid-forming inverters in EMT simulation tool, e.g. SimPowerSystems or PSCAD.

  • Knowledge of power systems operation, stability analysis (includes transient stability analysis and small signal stability) or fault analysis.

  • Good publication record.

  • Excellent writing and communication skills.


Submission Guidelines

Please note that in order to be considered an applicant for any position at NREL you must submit an application form for each position for which you believe you are qualified. Applications are not kept on file for future positions. Please include a cover letter and resume with each position application.


EEO Policy

NREL is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard basis of age (40 and over), color, disability, gender identity, genetic information, marital status, military or veteran status, national origin/ancestry, race, religion, creed, sex (including pregnancy, childbirth, breastfeeding), sexual orientation, and any other applicable status protected by federal, state, or local laws.

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The National Renewable Energy Laboratory (NREL) is a leader in the U.S. Department of Energy’s effort to secure an environmentally and economically sustainable energy future. With locations in Golden and Boulder, Colorado, and a satellite office in Washington, D.C., NREL is the primary laboratory for research, development, and deployment of renewable energy technologies in the United States.

NREL is subject to Department of Energy (DOE) access restrictions. All candidates must be authorized to access the facility per DOE rules and guidance within a reasonable time frame for the specified position in order to be considered for an interview. DOE rules for site access during the interview process are the same regardless of whether the candidate is interviewed on-site, off-site, or via telephone or videoconference. Additionally, DOE contractor employees are prohibited from participating in certain Foreign Government Talent Recruitment Programs (FGTRPs). If a candidate is currently participating in an FGTRP, they will be required to disclose their participation after receiving an offer of employment and may be required to disengage from participation in the FGTRP prior to commencing employment. Any offer of employment is conditional on the ability to obtain work authorization and to be granted access to NREL by the Department of Energy (DOE). We understand that COVID-19 may have caused delays or closures at offices, consulates, and embassies. However, NREL cannot make exceptions to work authorization and access requirements, and exceptions to these requirements are not being made for COVID-19 related delays.

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