Compressor – Motor and inverter
In the home appliance sector, cost constraints limit the implementation of advanced motor and inverter solutions commonly used in other fields. Motor and inverter optimization must consider their interdependence, with two primary motor topologies in use: BLAC motors with Field Oriented Control (FOC) for lower torque ripple, and BLDC motors with trapezoidal control for higher power density. Inverter design involves balancing efficiency, cost, and electromagnetic compatibility, with low-power applications often using MOSFETs, while modern wide-bandgap devices are gaining interest. Additionally, European PFC regulations necessitate harmonic filters, with cost-effective passive filters being the most common despite efficiency and noise trade-offs.
The research focuses on advanced motor designs and control strategies to reduce costs, improve efficiency across the operating cycle, and enhance overall performance. Key areas include optimizing motor topologies, inverters, and power factor correction (PFC) systems, while addressing system losses such as HF iron and copper losses. Alternative drive concepts, new materials, and manufacturing technologies will also be explored to improve electromagnetic compatibility (EMC) and drive efficiency.
Special attention is given to specific operating conditions like startup and high torque, with efforts to optimize sensor topologies and algorithms for better motor startability. The program aims to advance inverter-driven motor systems, driving innovation and competitiveness in the home appliance sector.
