Rolls-Royce has been granted a patent for an interconnection unit for electrically connecting winding arrangements in an electrical machine for an electrically driven aircraft. The unit features a large number of contact points that can be connected to the winding arrangements, allowing for the construction of a desired winding system in a simple manner. GlobalData’s report on Rolls-Royce gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Rolls-Royce, photovoltaic drones was a key innovation area identified from patents. Rolls-Royce's grant share as of September 2023 was 60%. Grant share is based on the ratio of number of grants to total number of patents.
Interconnection unit for electrically connecting winding arrangements of an aircraft
A recently granted patent (Publication Number: US11777358B2) describes an interconnection unit for electrically connecting winding arrangements in an electrical machine of an aircraft. The interconnection unit includes a connection arrangement with multiple contact points that can be plugged onto the contact points of the winding arrangements. Each contact point is connected to a specific winding arrangement through electrical connection sections. The interconnection unit is designed to handle single-phase or polyphase electric currents, with multiple connection arrangements corresponding to the number of phases. The components of each connection arrangement are electrically insulated from each other.
The patent also discloses a method for producing a winding system using the interconnection unit. The method involves arranging the winding arrangements in their final positions on the electrical machine assembly, with their contact points disconnected. The interconnection unit is then arranged with its contact points in electrical contact and connected to the contact points of the winding arrangements using electrical connection sections. The interconnection unit is designed to be easily plugged onto the contact points of the winding arrangements without requiring further adjustment.
The winding system described in the patent includes the interconnection unit and multiple winding arrangements. The contact points of the interconnection unit are plugged into the contact points of the winding arrangements, resulting in a predetermined series and/or parallel connection of a subset of the winding arrangements. The contact points of the winding arrangements and the interconnection unit can be connected using a plug/socket connection. Each winding arrangement consists of individual windings arranged in a current flow direction, with an uninterrupted electrical conductor forming the windings.
Overall, this patent presents an interconnection unit and method for electrically connecting winding arrangements in an aircraft's electrical machine. The design allows for easy and efficient connection of the winding arrangements, enabling a predetermined series and/or parallel connection. The use of plug/socket connections and insulated components ensures safe and reliable electrical connections.