Abstract — This paper presents a no-load core loss analysis of a three-phase energy-saving small-size induction motor supplied by a sinusoidal voltage. In the field-circuit approach, the distribution and changes of magnetic flux density in the motor are computed using a time-stepping finite-element method. The discrete Fourier transform is used to analyze the magnetic flux density waveforms in each element of the motor model.
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.
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 – Vector 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.
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 induction 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.
Abstract – The paper presents the use of Opera 2D for designing and modeling of single phase induction motor with copper material. The materials are verified with the number of conductivity in the rotor bar. The winding calculation and the single phase winding are used for the circuit element in the program.
Abstract — In this paper a FEM model of a three phase 0.5HP squirrel-cage induction motor is modelled by using FEM software. The model is then used to analyze and investigate the performance of the induction machine using copper rotor bar compared to the conventional aluminium rotor bar material. Calculation using analytical tools could not calculate precisely the required parameters in order to obtain an optimal model to build a prototype model.
The Opera motor design software package is helping Air Bearings of Poole to extend the speed of spindle motors beyond 400,000 RPM. The package’s integrated electromagnetic and thermal simulators are being used to identify optimisations that will make the motors more compact and efficient, to improve rotational speeds beyond their current maximum.
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.
provides ultra-fast design entry for powerful FEA electromagnetic simulation
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.
A new magnetic hysteresis solver for electric motor and electromagnetic design has been released by Vector Fields, a business unit of Cobham plc. The tool’s ability to accurately characterise hysteresis effects provides a powerful means to optimise the performance and fidelity of new-generation electrically-assisted automotive power steering systems, and other high-performance actuators.