Magnetic field modeling for electric propulsion devices. Electric propulsion devices rely on magnetic fields to confine plasma. The fields are critical to the performance of the thruster, therefore proper design and simulation is necessary to ensure the device will work. Here we present details on how we use MagNet in order to design, simulate and verify magnetic field designs for electric propulsion devices.
Developing novel technologies for hybrid and electric vehicles
Infolytica has been involved in a major project aimed at designing efficient powertrains for hybrid and electric vehicles. A major part of this project dealt with materials measurement and material models in the software and an investigation into the effects of different waveforms on the core loss, as well as the effects of temperature, stress and manufacturing.
Power transformers and high voltage applications using Infolytica software
Infolytica is a major supplier of design software to the transformer industry and has worked closely with several major companies to introduce features in the software specifically for transformer design. This presentation will highlight some of these capabilities. The studies discussed address both the electromagnetic and the thermal aspects of the simulation and the capabilities implemented in the software that make it possible to solve for an accurate field solution in an efficient manner.
The insulation in a transformer has to be able to withstand the electric field stresses being created under normal and fault conditions. This requires an electric field analysis of the device in addition to the magnetic and thermal simulations. A capacitive bushing is another example of a high voltage application requiring an electric field simulation. The requirements for an efficient solution of the electric field and some of the issues in analyzing the effects of very high electric fields will be discussed.
Discussion in this session will focus on extending the capabilities of MotorSolve beyond the standard interface.
Our first topic will discuss the use of the DXF import functionality to add company-specific innovative templates for the Rotor and Stator. Our second topic will discuss the use of macros to extend simulation review and to create repeatable initial conditions for the execution of a single experiment or for a group of experiments. Simulations results will be logged in either the Report or in an Excel worksheet. Our last topic will discuss the use of MotorSolve relating to how the thermal response of a motor constrains the design possibilities. Using the definition of intervals within the Duty Cycle parameter allows us to operate the motor in standard operating conditions both magnetically and thermally so that we can implement cooling configurations ahead of time to insure reliable motor performance.
Electric Motor Noise and Vibration Simulations using ActranSoftware
Electric motors are prevalent in so many systems that their contribution to the overall noise is becoming an important aspect of modern Motor designs. There are three main noise sources in motors: Electromagnetic excitations, Rotor unbalance and cooling fan noise. Depending up on the type of motor, the way it is mounted, there are two main paths: Airborne path and Structure borne path for noise propagation. The current presentation will highlight the process involved in simulating cooling fan noise and the electromagnetically excited noise. Both the cooling fan noise as well as the electromagnetic excitation noise can be simulated in frequency domain as well as in the time domain. Although frequency domain is popular and most relevant for steady state applications, time domain simulations are important to study noise during run up. Actran software can handle both types of simulations and we will show some relevant examples. We will also highlight the process involved in using results from electromagnetic simulations like Magnet in a noise analysis in Actran.
Designing a PM Generator for a hybrid vehicle with MotorSolve
Suggested design process of a PM engine mounted generator for use on a hybrid vehicle. Two generating modes will be presented after sizing the machine to a 40 KW specification. The first mode is simple diode rectification of the AC output to DC and a check on the sizing exercise. The second mode is based upon an active transistor rectification for both DC braking assistance and normal battery charging. Note the generator will be studied also as a motor because some hybrids use the generator to assist traction during acceleration.