This application note shows how to create and analyze the 2004 version of the Toyota PRIUS electric motor using the 2D Machine Environment (ME2D). The experimental characterization of the motor and of the drive system has been done by the Oak Ridge National Laboratory (ORNL) which presented its findings in a series of papers -.
Optimal design solutions to rotating electrical machine requirements can now be created in hours, by non specialists, using a new version of design automation software from Cobham Technical Services.
Cobham’s Machines Environment introduced a new level of user friendliness when it was launched by providing a design entry system that allows precision finite-element analysis (FEA) models of motors and generators to be created and solved in minutes. The two-dimensional (2D) version of the software has now been integrated with Cobham’s unique optimization tool which automatically finds the optimal solution within a design space – even for multiple or competing design objectives.
* ability to run 1000s of optimisation searches helps Siemens make breakthroughs such as permanent magnet generators.
Cobham Technical Services has been awarded a contract for its powerful Opera electromagnetic design tool by Siemens Wind Power, a leading supplier of wind turbines for onshore, offshore and coastal sites.
Abstract – This paper presents an inside-out axial-flux permanent-magnet brushless DC motor optimized by Finite Element Analysis (FEA) and Genetic Algorithm (GA) that uses sizing equation. The double-sided slotted-stator designed TORUS motor has sinusoidal back EMF waveform and maximum power density. The GA obtained the dimensions that gave the motor its highest power density. Field analysis of the dimensions was then put through FEA, to obtain and re-optimize the motor’s characteristics.
Abstract — This paper presents the optimal design and development of an axial flux motor for blood pump application. With the design objective of maximizing the motor efficiency and torque, different topologies of AFPM machine has been examined.
Cobham Technical Services is launching a 3D version of its rapid electromagnetic design tool for rotating electrical machines – the Advanced Machines Environment. The new software combines the extreme accuracy of finite-element analysis (FEA) simulation with a design entry system that creates full 3D models of electric motors or generators within minutes.
Abstract – The paper describes advanced Finite Element Analysis solvers for the treatment of material magnetization. The prediction of hysteretic behaviour in soft ferromagnetic materials is outlined, demonstrating how remanent forces and hysteresis loss can now be accurately quantified. Results from analysis of a hysteresis motor and brake demonstrate the usefulness of the new algorithm in the design of such highly specialized devices. Details of modelling the magnetization of hard magnetic material sections are also presented, along with their subsequent in-service de-magnetization in an electrical machine, as a result of high reverse currents.
Abstract – The main aim of the work is to design and manufacture a model of brushless DC motor (BLDC) with magnetic circuit made of magnetic powder bonded in solid material by powder glue. Soft magnetic elements manufactured in this method are called soft magnetic composites or dielectromagnetics, permanent magnets are called bonded magnets or dielectromagnets.
At CWIEME, Cobham Technical Services is releasing a new version of its Vector Fields Software tool for designing rotating electrical machinery. The electromagnetic simulation software combines the accuracy of virtual prototyping using finite-element analysis with a rapid front-end design tool that allows users to create models of motors and generators in minutes — allowing users to achieve radical new levels of development productivity.
Abstract – This paper presents a new type of axial flux motor, the yokeless and segmented armature (YASA) topology. The YASA motor has no stator yoke, a high fill factor and short end windings which all increase torque density and efficiency of the machine. Thus, the topology is highly suited for high performance applications. The LIFEcar project is aimed at producing the world’s first hydrogen sports car, and the first YASA motors have been developed specifically for the vehicle.