Sr Power Electronics Engineer

This position is accountable for independently designing and implementing cost effective electronic BMS solutions for use in battery storage. They will design and troubleshoot circuits, conduct modeling and analysis, produce schematics and layouts, and other duties related to electronic BMS design.

• Verification testing of electronic components and overall product designs.
• Customer/Partner Locations – Employee may visit customer or partner locations that may be comprised of office, manufacturing floor, laboratory environments and construction sites depending on the location and reason for visit.
• Work on electronic designs (schematics), component sizing and theoretical analysis to study the worst cases scenarios and thus consider all the potential stress experienced by the components (stress tests)
• Provide maintenance of power systems application functionality, including documentation and user interfaces
• Provide technical guidance to engineering personnel, manufacturing, and field operations.
• Design and develop power electronic devices (such as DC-to-DC converters, DC-to-AC inverters, AC-to-DC rectifiers and power supplies)
• Coordinate and manage vendor, supplier, and contractor relationships for prototype design.
• Provide first principle techno-economic modeling to help define the dimensions and electrical configuration of battery string control. Capture impacts from shunt currents, current collector losses, as well as trading bussing and switching efficiency with BMS costs.
• Produce detailed engineering materials including design schematics, PCB layouts, tolerance analysis, design notes, FMEA, failure analysis reports, and technical review documents.
• Conduct power systems modeling and analysis, load flow analysis, and other studies of the systems to determine their performance and capacity
• Design to meet safety certification standards, such as UL and IEC.
• Integrate with a greater team and understand how components fit together into larger systems.

• Office Environment - Must be able to remain in a stationary position 50% of the time and occasionally move about inside the office to access file cabinets, office machinery, etc. Required to have close visual acuity to perform an activity such as: preparing and analyzing data and figures; transcribing; viewing a computer terminal; extensive reading. May be required to exert up to 25 pounds of force occasionally to lift, carry, push, pull or otherwise move objects, including the human body.
• Expertise in designing DC/DC converters, DC/AC inverters with a strong emphasis on low-cost, high-performance designs for battery systems
• Knowledge of communications protocols such as TCP/IP, CAN, i²C and SPI, specifically Modbus
• Circuit board layout with high-impedance analog signals and creepage/clearances for high voltage. Discrete analog and digital circuits design and simulations.
• Factory - The worker may be subject to hazards. Includes a variety of physical conditions, such as proximity to moving mechanical parts, vibration, moving vehicles, electrical current, exposure to temperature changes or exposure to chemicals. While performing the duties of this job, the employee may be exposed to fumes, airborne particles, odors, dust, mists, and gases. The noise level in the work environment can be loud. Required to have close visual acuity to perform an activity such as: preparing and analyzing data and figures; transcribing; viewing a computer terminal; extensive reading; visual inspection involving small defects, small parts, and/or operation of machines (including inspection); using measurement devices; and/or assembly or fabrication parts at distances close to the eyes. Machinery operation requires the use of safety equipment to include but not limited to eye safety glasses, hearing protectors, work boots, and lab coats. May be required to exert up to 50 pounds of force occasionally to lift, carry, push, pull or otherwise move objects, including the human body.
• Capability to select and integrate off-the-shelf component and equipment.
• Strong cross-disciplinary system design skills.
• Familiarity with design for EMC and availability to trace down EMI issues.
• Working knowledge of embedded control systems and their applications.
• Minimum 8 years' experience.
• Overnight/North America: 10-25%
• Thorough understanding of electrical theory and electronics design under both the digital and analog domains
• Ability to design and layout electrical circuit boards, follow IPC and other safety design standards using Altium, KiCad.
• Experience with design, specification, and procuring of electrical equipment and systems. i.e., switchgear, motors, heat tracing, UPS, batteries, cathodic protection, motor operated valves, transformers, breakers, relays, temporary generators.
• Experience in troubleshooting, analyzing, and resolving complex electrical problems.
• Awareness of safety certification process to standards such as UL.
• Strong sense of ownership, initiative, and ability to follow through on objectives.
• Understanding of hardware and design requirements of all components and product as a whole.
• Bachelor's degree in electrical engineering required.

Working Conditions

• Local Travel