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Universal BField Toolkit包括三個(gè)程序，涵蓋了磁場模擬。
PerMag計(jì)算具有平面或圓柱對稱性的任意幾何形狀的靜磁場。該程序可以使用永磁體、線圈和鐵磁材料進(jìn)行組合運(yùn)行。憑借其開放的數(shù)據(jù)結(jié)構(gòu)，PerMag可以處理全部永磁材料，包括像Alnico這樣的非線性材料。分析功能包括自動(dòng)確定磁場能量、力和感應(yīng)電流以進(jìn)行電感計(jì)算。
Pulse決定了存在渦流時(shí)磁場的時(shí)間變化?？梢允褂脭?shù)字函數(shù)或表格函數(shù)輸入的系統(tǒng)為多個(gè)線圈分配任意電流波形。該程序還使用用戶定義的磁導(dǎo)率表處理非線性磁性材料。Pulse在指定時(shí)間生成多個(gè)數(shù)據(jù)文件，并在給定位置生成磁場和感應(yīng)電場的歷史文件。其他功能包括存儲(chǔ)能量、峰值場值、磁力和扭矩的自動(dòng)計(jì)算。Pulse可應(yīng)用于變壓器、磁記錄設(shè)備、高場脈沖磁體、線性感應(yīng)加速器、高頻電感器和微電子設(shè)備中的磁耦合。
Nelson計(jì)算導(dǎo)電介質(zhì)中的交流或射頻磁場。應(yīng)用包括模擬材料加工的感應(yīng)加熱以及變壓器或音頻設(shè)備的頻率響應(yīng)。諧波電流的幅度和相位可以單獨(dú)設(shè)置。材料的特點(diǎn)是磁導(dǎo)率和電導(dǎo)率值。程序自動(dòng)計(jì)算并記錄按區(qū)域組織的功率密度和總電流。該信息可以移植到TDiff程序中進(jìn)行熱計(jì)算。
解決方案程序在可變分辨率共形三角形網(wǎng)格上采用有限元方法，其大小只受計(jì)算機(jī)安裝內(nèi)存的限制。解決方案可能包含多達(dá)250個(gè)具有指定材料屬性的區(qū)域。獨(dú)立包包括網(wǎng)格，用于為全部解決方案程序自動(dòng)創(chuàng)建等角三角形網(wǎng)格。
【英文介紹】
The Universal BField Toolkit includes three programs that cover the full range of magnetic field simulations.
PerMag calculates static magnetic fields for any geometry with planar or cylindrical symmetry. The program can perform combined runs with permanent magnets, coils and ferromagnetic materials. With its open data structure, PerMag handles all permanent magnet materials, including non-linear materials like Alnico. A concise users' manual reviews magnetostatic theory with anisotropic materials and numerical methods for field solutions. Analysis capabilities include automatic determination of field energy, forces and induced current for inductance calculations.
Pulse determines time variations of magnetic fields in the presence of eddy currents. Multiple coils may be assigned arbitrary current waveforms using either mathematical functions or a fiexible system of tabular function input. The program also handles non-linear magnetic materials with user-defined magnetic permeability tables. Pulse produces multiple data files at specified times and history files of magnetic and induced electric field at given locations. Other features include automatic calculation of stored energy, peak field values, magnetic forces and torques. Pulse has applications to transformers, magnetic recording devices, high-field pulsed magnets, linear induction accelerators, high-frequency inductors and magnetic coupling in microelectronic devices.
Nelson calculates AC or RF magnetic fields in conductive media. Applications include simulation of induction heating for material processing and the frequency response of transformers or audio devices. The amplitude and phase of harmonic currents may be set individually. Materials are characterized by values of magnetic permeability and electrical conductivity.The program automatically calculates and records power density and total current organized by region. The information may be ported to the TDiff program for thermal calculations.
The solution programs employ finite-element methods on variable-resolution conformal triangular meshes with size limited only by the installed memory of the computer. Solutions may contain up to 250 regions with specified material properties. The self-contained package includes Mesh for the automatic creation of conformal triangular meshes for all solution programs.
