Microgrid System Studies & Validation Engineer - Morrisville/Raleigh, NC

Delta, founded in 1971, is a global leader in switching power supplies and thermal management products with a thriving portfolio of smart energy-saving systems and solutions in the fields of industrial automation, building automation, telecom power, data center infrastructure, EV charging, renewable energy, energy storage and display, to nurture the development of smart manufacturing and sustainable cities. As a world-class corporate citizen guided by its mission statement, “To provide innovative, clean and energy-efficient solutions for a better tomorrow,” Delta leverages its core competence in high-efficiency power electronics and its ESG-embedded business model to address key environmental issues, such as climate change. Delta serves customers through its sales offices, R&D centers and manufacturing facilities spread over close to 200 locations across five continents. Delta has 158 sales offices, 72 R&D centers and 48 manufacturing facilities worldwide.

Throughout its history, Delta has received various global awards and recognition for its business achievements, innovative technologies, and dedication to ESG. Since 2011, Delta has been listed on the DJSI World Index of Dow Jones Sustainability™ Indices for 11 consecutive years. In 2021, Delta was also recognized by CDP with leadership level ratings for its substantial contribution to climate change and water security issues and named Supplier Engagement Leader for its continuous development of a sustainable value chain.

At Delta, we’re leading the energy transition with innovative solutions in solar inverters, energy storage systems, and EV charging infrastructure. Our technologies are helping utilities, businesses, and communities decarbonize and build resilient, intelligent energy ecosystems. Join us in creating a cleaner, smarter energy future.

Role Summary

Responsible for end-to-end power system studies, protection engineering, grid code compliance, quantitative reliability (RAM) modeling, and closed-loop validation for utility-grade and hyperscale microgrid projects. This role ensures microgrid solutions are safe, selective, stable, compliant, and demonstrably robust prior to field deployment by combining RMS/EMT studies, protection coordination, availability analysis, and SIL/HIL validation across grid-connected and islanded operating modes.

• •RMS and EMT power system studies for microgrids and inverter-dominated systems
• •Utility interconnection / grid code compliance assessment and formal reporting
• •Protection modeling, short-circuit analysis, and coordination for grid-connected and islanded operation
• •Quantitative Reliability, Availability & Maintainability (RAM) modeling to support architecture trade-offs and contractual SLAs
• •System-level validation using SIL/HIL (e.g., RTDS) including abnormal event and fault response verification

• •Perform symmetrical and asymmetrical fault studies for grid-connected and islanded conditions
• •Execute protection coordination studies and validate relay settings, zones, and clearing times (e.g., ETAP, CYME, MATLAB)
• •Assess inverter fault current contribution, relay sensitivity, and protection performance in inverter-based resource environments
• •Support adaptive and inverter-based protection scheme evaluations; ensure protection–control coordination with control/firmware teams
• •Document coordination curves, assumptions, study conclusions, and recommended mitigation measures
• •Support FAT, SAT, commissioning, and utility witness testing for protection and interconnection performance

• •Develop quantitative reliability/availability models for BESS, PCS, controls, and balance-of-plant using ReliaSoft or equivalent RAM tools
• •Analyze failure modes, redundancy schemes, repair/recovery strategies, and single-point-of-failure risks
• •Run Monte Carlo simulations and sensitivity analyses to quantify availability drivers and optimize redundancy vs. cost
• •Provide quantitative inputs for architecture decisions and support contractual availability/performance guarantees
• •Document modeling assumptions, data sources, results, and actionable recommendations for design and operations

• •Develop SIL and HIL test environments integrating EMS, real-time control, and unit controllers
• •Execute closed-loop validation using RTDS (or equivalent) with physical control hardware and representative plant models
• •Validate grid-connected, islanded, transition, black-start, and fault response behavior against