Characterising lifecycle behaviour of permanent magnets is critical to emergent electrical machine applications

Permanent magnet materials are now being used in many designs of new electrical machine applications, and a lot of this equipment will be expected to have long lifecycles. If performance and lifecycle targets are to be met, then detailed characterisation at the design stage using advanced electromagnetic and multiphysics simulation technology will be critical, according to Cobham Technical Services.

High field strength, rare earth permanent magnets are key components in many of the new electrical machine designs now appearing on the market. Typical long-life applications for such technology include wave and wind power generators, and the traction motors for hybrid and electric vehicles.

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Webinar: Software requirements and practical limitations of multi-physics and multi-discipline simulations for electrical machines

Electromagnetic designers of electrical motors and generators in industrial organizations are increasingly examining the behaviour of the machine in multi-physics and multi-discipline scenarios.

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Axial-Flux Permanent-Magnet Motor Design For Electric Vehicle Direct Drive Using Sizing Equation and Finite Element Analysis

Abstract – The design process of a double-sided slotted TORUS axial-flux permanent-magnet (AFPM) motor suitable for direct drive of electric vehicle (EV) is presented. It used sizing equation and Finite Element Analysis (FEA). AFPM motor is a high-torque-density motor easily mounted compactly onto a vehicle wheel, fitting the wheel rim perfectly.

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Cobham Technical Services and Boulder Wind Power collaborate to accelerate development of revolutionary wind turbine technology

Radical new design aims to deliver a 20% reduction in the cost of wind generated electricity

Cobham Technical Services is helping Colorado-based Boulder Wind Power (BWP) accelerate development of a radical new permanent magnet generator through use of advanced electromagnetic design software. Based on a permanent magnet, direct drive design, BWP’s generator uses a unique axial flux, air-core architecture that increases efficiency and reliability, and will ultimately reduce the cost of wind generated electricity to compete at parity with fossil fuels.

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Advanced simulator speeds implementation of direct-drive electric motors in new automotive, marine and powergen applications

An innovative electromagnetic simulation tool is speeding the commercialization of a breakthrough direct-drive technology for electric vehicles by Magnomatics. The Opera simulator has been used by Magnomatics – a company that was set up to develop new forms of magnetic power transmission – to design a novel direct drive system that integrates a permanent magnet motor with non-contact magnetic gearing.

Called the Pseudo Direct Drive, this new form of traction motor offers such an exceptional torque density that it can even be packaged within a vehicle’s wheel. The technology has already been demonstrated on a 22-inch city-bus wheel where it generated a continuous rated torque of 4000 Nm and speeds of up to 750 RPM – which equates to a top speed of around 80 km/hour. Magnomatics is now engaged in several other Pseudo Direct Drive design projects in areas including marine propulsion, defence vehicles and direct-drive electricity generators for wind turbines.

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Webinar: Multiphysics Simulation in Opera

Cobham Technical Services – Vector Fields Software and its product Opera have been at the forefront of finite element electromagnetic analysis for more than twenty-five years.

Opera is a general-purpose finite element software suite for the design and optimization of electromagnetic devices in two or three space dimensions. The software has been in continuous development since 1984, and its accuracy and capabilities for multiphysics analysis has made it a firm favourite in both scientific and industrial communities. The ability to couple electromagnetic analysis to built-in thermal and stress solutions, along with drive circuits, mechanical drives and system representations allows in-depth analysis. Remove assumptions and bottlenecks from your design process and deliver right-first-time products.

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Simulating the Toyota Prius electric motor

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 [1]-[5].

The steps needed to customize the geometry of the stator and rotor of the default embedded magnet synchronous model in order to recreate the precise geometry of the PRIUS motor are detailed.

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Webinar: Introduction to Rotating Electrical Machine Design using Opera

Webinar: Introduction to Rotating Electrical Machine Design using Opera

Today’s designers of rotating electrical machines are being pressured to deliver more efficient, robust and innovative motors and generators in ever-shortening timescales. In this webinar Cobham Technical Services РVector Fields Software will show how the Opera Suite can be used to deliver the accuracy of Finite Element Analysis (FEA) with the ease-of-use of analytical design packages.

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Introduction to embedded permanent magnet machine design

Introduction to ME2D – Embedded Permanent Magnet Machine Finite Element Model Construction & Analysis

Introductory video showing the use of the two dimensional machines environment (ME2D) with Opera-2d in building, simulating and post-processing a parametric model of an embedded permanent magnet machine.

The environments provide ready-made generic designs, together with application-specific data entry and advanced optimization techniques, all expressed in the language of the application.

The environments provide a strategic framework for the design, analysis and optimization of your electrical products.

The advanced facilities can boost the productivity of your engineers and get your design to market with reduced time and cost.

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Introduction to surface mounted permanent magnet machine design in ME2D

Introduction to ME2D – Surface Mounted Permanent Magnet Machine Finite Element Model Construction & Analysis

Introductory video showing the use of the two dimensional machines environment (ME2D) with Opera-2d in building, simulating and post-processing a parametric model of a surface mounted permanent magnet machine.

The environments provide ready-made generic designs, together with application-specific data entry and advanced optimization techniques, all expressed in the language of the application.

The environments provide a strategic framework for the design, analysis and optimization of your electrical products.

The advanced facilities can boost the productivity of your engineers and get your design to market with reduced time and cost.

Continue reading “Introduction to ME2D – Surface Mounted Permanent Magnet Machine Finite Element Model Construction & Analysis” »