MarSum Solutions White Papers

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Mission-critical power electronics must do more than meet efficiency targets. They need to survive thermal stress, vibration, EMI, abnormal inputs, fault events, and long service life while supporting safety and compliance expectations. This paper explains how derating, protection strategy, thermal design, EMC planning, redundancy, diagnostics, and qualification evidence work together to create reliable converters, drives, and power systems for aerospace, defense, medical, industrial, and harsh-environment applications. 

Silicon carbide and gallium nitride both enable faster, smaller, and more efficient power converters, but they are not interchangeable. This paper compares SiC and GaN from a practical engineering perspective, including voltage class, switching frequency, thermal behavior, gate-drive design, EMI risk, qualification maturity, and system cost. It helps teams understand where each wide-bandgap technology fits best and why semiconductor selection should be treated as a core architecture decision. 

AI and digital twins are changing how power electronics are designed, validated, monitored, and maintained. This paper explains how simulation models, sensor data, embedded controls, test results, and field telemetry can be connected into a disciplined engineering workflow. It covers practical use cases such as design optimization, predictive fault detection, digital twin modeling, test-bench validation, and condition-based maintenance while emphasizing validation, explainability, cybersecurity, and production readiness. 

Utility-scale battery storage depends on much more than battery cells. The power conversion system, plant controls, grid interface, protection strategy, thermal design, and commissioning plan determine whether stored DC energy can become reliable, compliant AC power. This paper explains bidirectional PCS design, grid services, renewable integration, power quality, fault handling, state-of-charge management, and the system-level engineering needed to make large BESS projects reliable grid assets. 

As renewable generation and battery storage replace traditional synchronous machines, power systems need new ways to support voltage, frequency, inertia, and restoration. This paper explains the difference between grid-following and grid-forming inverter controls, where grid-forming capability matters most, and what teams must solve for weak grids, islanded systems, microgrids, black start, and high-renewable networks. It also covers modeling, protection coordination, commissioning, and validation challenges. 

Smart factories rely on motor drives, servo systems, regenerative drives, sensors, and connected controls that do more than move equipment. This paper explains how digitalized power electronics can improve uptime, reduce energy use, recover braking energy, support predictive maintenance, and provide useful diagnostics across industrial systems. It also covers drive data, digital twins, virtual commissioning, plant integration, cybersecurity, EMI/EMC, and the practical challenges of upgrading legacy equipment. 

AI data centers are pushing rack power, thermal density, and electrical distribution beyond legacy assumptions. This paper explains why high-voltage DC architectures, including 380 VDC and 800 VDC distribution, are gaining attention for next-generation cloud, colocation, and AI infrastructure. It covers centralized AC/DC conversion, rack-level DC/DC conversion, HVDC busways, solid-state protection, sensing, thermal management, EMI/EMC, backup energy integration, and safe deployment at high power density. 

Electric aircraft, eVTOL platforms, hybrid-electric propulsion, and more-electric aircraft all depend on lightweight, efficient, and certifiable power electronics. This paper explains the system-level challenges behind aircraft electrification, including propulsion inverters, high-voltage DC distribution, DC/DC conversion, redundancy, thermal management, EMI/EMC near avionics, fault tolerance, degraded-mode operation, and certification readiness. It frames electrified flight as a power conversion and integration challenge, not just a motor or battery problem. 

EV powertrains are moving from 400V-class systems toward 800V architectures to support faster charging, higher power transfer, lower current, reduced copper mass, and improved efficiency. This paper explains what changes at the vehicle architecture level, including the battery system, onboard charger, DC/DC conversion, traction inverter, high-voltage distribution, protection, insulation, and EMI/EMC strategy. It also covers the role of SiC and GaN in practical automotive power electronics design. 

Ultra-fast EV charging sites are high-power, grid-connected power conversion systems. This paper explains the engineering behind 150 kW, 350 kW, and higher charging infrastructure, including AC/DC front ends, DC links, DC/DC output regulation, modular power cabinets, power sharing, grid harmonics, power factor, load management, thermal limits, cable and connector heating, interoperability standards, and emerging medium-voltage or solid-state transformer approaches for larger charging deployments. 

For more than three decades, co-founder Joseph G. Marcinkiewicz—credited with 50-plus U.S. patents—has turned ultrasonics from “interesting lab tech” into factory-floor workhorses. In this paper he and the MarSum team share the stories behind vibration welders that tune themselves on the fly, sensor-less AI controllers that keep amplitude rock-steady, and cross-industry wins in aerospace, automotive, and precision manufacturing. You’ll see how their end-to-end approach—from first concept to EMI-compliant, production-ready hardware—helps R&D groups launch ultrasonic products faster, safer, and with fewer surprises.