Power Electronics Engineer

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About the role

Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We’re a fast-growing, global company building the world’s best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants. Responsibilities • Create the best possible products by contributing to product level features, design, and vision by leveraging your experience and creativity • Detailed design of power electronic systems from 10W – 10kW, DC/DC converters, offline isolated power supplies, and inverters including the selection of topology, semiconductors, magnetics design, schematic design and layout, EMC and design of various safety aspects • Collaborate to create efficient verification and validation test plans for the individual components as well as the complete system • Bring up and testing of systems to validate functionality, optimize performance, and evaluate critical characteristics • Work across functions such as mechanical, thermal, reliability, and firmware engineering to optimize the product • Start-to-finish ownership of the power conversion system from specification through design, prototype, validation and manufacturing Relevant Skills • Minimum B.S. in Electrical Engineering with 5 years’ experience in power electronics design. M.S. or Ph.D. degree with power electronics focus is preferred. Job grade can be discussed based on qualification and experience • Detailed understanding of active and passive component losses in power conversion and the various means to reduce/mitigate those losses • Experience of designing high efficiency and high density power converters with wide bandgap devices • Familiarity with various topologies (two-level, multilevel, soft switching, etc.) and ability to analyze, select, and design topologies best suited for a given application • Knowledge of sensor design to measure converter parameters in real time in a noisy environment • Familiarity with magnetics design and specification, applications of various core materials for both power and filtering, knowledge of winding structure and optimization, and insulation strategies • EMC design and optimization. Understanding of EMC theory applied to both PCB layout as well as filter designs • Ability to design schematics and conduct layout design or review as it applies to power conversion • Strong lab skills with working knowledge of the tools and techniques for power conversion test and analysis (e.g., use of oscilloscopes, impedance analyzers, sources, and loads in an environment with both high voltages and currents, and high common-mode and differential-mode noise) Helpful Skills • Working with high voltage, current, and power • Ability to simulate power converter based electrical systems and familiarity with the tools thereof • Familiarity with global safety and EMC certifications and building systems to pass the relevant codes • Previous work in the solar, energy storage, or EV/ EV Charging industries • Familiarity with embedded control and application and programming of microcontrollers • Understanding of mechanical and thermal considerations Benefits: We’re dedicated to creating a remarkable employee experience. At Lunar, competitive base pay is one part of our total compensation package. Lunar employees also have the opportunity to become Lunar shareholders by getting equity in a fast-growing company and participating in our employee stock program. Additional benefits include: • Medical, dental, and vision insurance for employees and dependents • Flexible Paid Time Off plus 10 paid holidays • Tax deferred 401(k) plan • Paid parental leave for all full time employees including 12 w

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