TECHNICAL APPENDIX: The MIDA Power Infrastructure Definitive White Paper

This appendix serves as a comprehensive technical foundation for the MIDA Power DC Fast Charging series. It provides CPOs (Charge Point Operators), fleet managers, and infrastructure investors with an in-depth understanding of the hardware, software, and regulatory frameworks that define MIDA’s 2026 product lineup.

I. Hardware Architecture: The Physics of High-Efficiency Conversion

At the core of every MIDA DC station is a modular power conversion stack utilizing the latest in wide-bandgap semiconductor technology. Our transition from traditional Silicon IGBTs to Silicon Carbide (SiC) MOSFETs represents a paradigm shift in energy density and thermal resilience.

1.1 SiC MOSFET Topology and LLC Resonant Converters

MIDA’s 30kW and 40kW power modules utilize a Phase-Shifted Full-Bridge (PSFB) combined with an LLC Resonant Converter stage. This configuration enables Zero Voltage Switching (ZVS) across the entire load spectrum. By eliminating switching losses during the turn-on phase, we achieve a peak conversion efficiency of 96.5%. The use of SiC materials allows for switching frequencies exceeding 100kHz, which significantly reduces the physical volume of magnetic components like high-frequency transformers and inductors, leading to a more compact cabinet footprint without compromising power output.

1.2 Isolated Air-Duct Cooling & Thermal Management

In industrial and commercial environments, electronic failure is most often caused by environmental contamination. MIDA engineering has pioneered the “Isolated Air-Duct” design. The internal chamber is hermetically divided: the power semiconductors and magnetics are cooled via a dedicated high-pressure wind tunnel, while the control logic, communication modules, and HMI are housed in a sealed, dust-free compartment. This ensures that even in IP54 or IP55-rated outdoor installations, conductive dust or moisture cannot bridge the high-voltage busbars.

II. Intelligence Layer: The AI-DES Energy Scheduling Algorithm

Modern charging is no longer just about delivering raw kilowatts; it is about intelligent energy orchestration. MIDA’s proprietary AI-DES (AI-Dynamic Energy Scheduling) platform operates on a three-tier logical framework:

• Tier 1: Grid-Edge Responsiveness: The charger monitors local grid frequency and voltage transients at a sampling rate of 10kHz. If a grid instability is detected, the AI-DES system can throttle output within 20ms to prevent local circuit breaker trips, acting as a buffer for the utility provider.
• Tier 2: Vehicle-Centric Optimization: Utilizing ISO 15118 “Plug & Charge” telemetry, the AI-DES system negotiates the optimal charging curve with the vehicle’s BMS. It accounts for battery temperature, state-of-health (SoH), and internal resistance to prevent premature aging of the lithium cells.
• Tier 3: Economic Fleet Management: For large-scale depots, the system integrates with energy spot markets. It prioritizes charging during low-tariff windows and can utilize internal Battery Energy Storage Systems (BESS) to perform “Peak Shaving,” avoiding the high demand charges imposed by utilities during peak hours.