STM32 ARM Cortex-M based sine-wave inverter platform targeting solar energy and home appliance applications, with a clear technology roadmap toward automotive-grade power conversion.
AuMi's industrial inverter project designs advanced DC-AC power conversion platforms using STM32 ARM Cortex-M microcontrollers. The current development targets solar energy systems and home appliance loads (up to 2 kVA), with the software architecture and hardware design choices deliberately structured to enable a migration path to automotive-grade inverter applications.
The power electronics topology is evaluated for optimal switching efficiency using Sinusoidal PWM (SPWM) and Space Vector PWM (SVPWM) techniques. Digital control algorithms running on the STM32 implement voltage regulation, current limiting, load detection and fault management in a single real-time control loop.
EMI/EMC compliance is addressed from the design stage through careful PCB layout, common-mode filtering and shielding strategy — a foundation requirement for any future automotive certification pathway.
Optimised topology and gate drive design targets >95% peak conversion efficiency.
Robust control loop maintains regulated output under dynamic load conditions — appliance startup surges, motor loads.
Power stage and control board separation allows power scaling without software redesign.
Heatsink design and junction temperature modelling ensures reliable long-duration operation.
Design decisions at every stage evaluate compatibility with automotive standards for future EV inverter development.
DC-AC topology selection, gate driver design, bus capacitor sizing and PCB power plane layout for the inverter power stage.
Full-bridge and half-bridge topology comparison, SPWM vs SVPWM evaluation, switching frequency optimisation and dead-time management.
IGBT/MOSFET selection, gate resistance tuning, heatsink design and thermal modelling for continuous and peak load conditions.
STM32-based voltage and current control loops, PI/PR regulators, PWM generation, ADC sampling and real-time fault handling.
Overcurrent, overvoltage, undervoltage, thermal and short-circuit protection with fast hardware trip and software recovery.
Common-mode filter design, PCB layout strategy, snubber circuits and conducted/radiated emission management for compliance.
Assessment of design choices for compatibility with ISO 26262, AEC-Q qualification and EV inverter power requirements.
From concept design through automotive-scalable production.
Topology selection, component sizing, schematic
PCB layout, first prototype build, bench testing
STM32 firmware, closed-loop voltage control, protection
Load testing, thermal validation, EMI pre-compliance
EV inverter architecture study, AEC-Q component migration
Solar, UPS, industrial or EV — our engineers can design for your specification.