Denso has been granted a patent for a rotating electrical machine featuring a field element with a magnet portion and a controller that manages armature winding energization. The design includes a unique magnetic path and a teeth-less armature core, enhancing magnetic saturation control and efficiency. GlobalData’s report on Denso gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Denso, Battery management systems was a key innovation area identified from patents. Denso's grant share as of July 2024 was 49%. Grant share is based on the ratio of number of grants to total number of patents.
Rotating electrical machine with variable magnetic saturation control
The patent US12074477B2 describes a rotating electrical machine system that integrates a rotor with a field element featuring a magnet portion composed of multiple alternating magnetic poles. The system includes a multiple-phase armature winding and a controller that manages the energization of the armature winding. Notably, the armature core is designed without teeth, and the field element core is structured to accommodate magnets that facilitate magnetic flux flow. Each magnet has specific acting surfaces that interact with the armature, and the design allows for a variable magnetic saturation state in the q-axis-side portion of the field element core, which is crucial for optimizing performance.
Further details reveal that the system incorporates features such as flux barriers and specific configurations of the magnets to enhance magnetic saturation control. The magnets are arranged to create a variable magnetic saturation area, which can be influenced by the energization of the armature winding. The design also includes inter-conductor members made of magnetic material, strategically placed to improve magnetic efficiency. The claims outline various configurations of the magnets and their interaction with the armature, emphasizing the innovative aspects of the rotor and armature design that contribute to the overall functionality of the rotating electrical machine system.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
