Academic Preprints & Open Educational Resources (OER)
Engineering Research & Technical Whitepapers
Peer-referenced technical reports, mathematical modeling frameworks, and continuous-duty electrical engineering preprints published by the PowerLab Open Energy Research Group. All papers are open-access under Creative Commons CC BY 4.0 and indexed with official DOIs for academic courseware and syllabus citation.
Continuous-Duty Thermal Sizing, Conductor Terminal Limits, and Branch Circuit Ampacity Requirements for Residential Level 2 EVSE
A rigorous mathematical and code-compliance analysis of continuous-load thermal mechanics in residential Level 2 Electric Vehicle Supply Equipment (EVSE). Evaluates the 125% continuous duty multiplier under NFPA 70 (NEC Article 625.42), terminal temperature ratings under NEC 110.14(C) (60°C vs 75°C limits), conductor ampacity derating adjustments under NEC Table 310.16, and Joule heating dynamics (I²R) in residential enclosures.
Thermal Degradation Kinetics, Auxiliary Electric Resistance Staging, and Seasonal HSPF2/COP Derating in Cold-Climate Air-Source Heat Pumps
A thermodynamic evaluation of air-source heat pump (ASHP) performance across sub-freezing ambient temperature spectra (-20°C to +10°C). Models vapor-compression Carnot limits, refrigeration enthalpy drops, coefficient of performance (COP) nonlinear decline, defrost cycle parasitic consumption, and the financial impact of staging auxiliary electric resistance elements (strip heat) versus dual-fuel natural gas systems.
Deterministic Modeling of Inductive Motor Inrush Currents and Non-Coincident Load Stacking for Residential Backup Power Systems
Presents a deterministic load sizing framework for emergency residential generators under NEC Article 702 and ISO 8528-5. Investigates transient sub-transient reactance (X''d), Locked Rotor Amperage (LRA) voltage dip envelopes during inductive motor starts (compressors, well pumps, sump pumps), sequential soft-starting step curves, and fuel-type derating factors (Gasoline vs Propane vs Natural Gas).
Ground View Factor Transposition, Snow Albedo Dynamics, and Sub-Zero Open-Circuit Voltage Expansion in Photovoltaic Arrays
Examines anisotropic sky diffuse and ground-reflected albedo transposition models (Perez & Hay-Davies) across seasonal solar panel tilt configurations. Quantifies high-latitude snow albedo capture enhancements (+25% to +40% diffuse boost), sub-zero temperature coefficient open-circuit voltage expansion (NEC 690.7), and string inverter maximum DC input voltage limits.
Academic Courseware Adoption & Syllabus Integration
PowerLab whitepapers and computational models are specifically designed for direct adoption into undergraduate engineering curricula, vocational electrical apprenticeship training (IBEW/NECA/NJATC), and graduate research:
- Zero Paywalls or Student Logins: All formulas, source code, and whitepaper datasets are available without student registration or paywall gating.
- Permanent DOI Archiving: Preprints and benchmark datasets are mirrored across Harvard Dataverse and Figshare with permanent Digital Object Identifiers.
- Interactive Syllabus Companion: Every technical report links directly to its companion browser-local simulation engine for class assignments and lab exercises.