1、Maxwell磁滞材料建模功能 ANSYS 中国 庄百兴 高级应用工程师 Click to edit Master text styles 提纲 磁滞现象和机理 Maxwell矢量磁滞 建模 磁滞应用案例 Q&A Click to edit Master text styles 磁滞现象和建模 意义 Core loss = Hyeteresis loss + Eddy current loss tBtBCKtBKtBKL o s sC o r eeech 5.0m a x221211Reference: D. Lin, P. Zhou, Q.M. Chen, “The Effects of
2、Steel Lamination Core Losses on Transient Magnetic Fields Using T- Method ”, IEEE VPPC 2008, Sep.3-5 2008, Harbin, China. Click to edit Master text styles 矢量磁滞 磁滞现象 -8-4048-2 0 -1 0 0 10 20B(kG)H ( O )Hysteresis Motor with Solid Rotor Hystereis Properties Memory Efficient 实心转子磁滞电机 Click to edit Mast
3、er text styles 普通模型 rrrrererererere00000ififhhhhhhhhhhhrererean hhM /)( hm hhre= hr e 0hir rhhrehr e 0| hir|= rr(a ) whe n | h hre 0| Hysteresis Model, define Hci, Br. 1. Using the descending curve left (or right) side of the BH Loop. Click to edit Master text styles Maxwell V16只能用方式 1 Specify a mat
4、erial with nonlinear relative permeability and edit the BH curve: Add points manually or import from file. The curve should describe either the ascending or the descending branch of the saturation hysteresis loop. 建模方式 1 Click to edit Master text styles 注意： that the first point and the last point mu
5、st mirror each other, otherwise the curve is considered invalid. 建模方式 1 Click to edit Master text styles When confirming, a coercivity value is automatically calculated and listed. 建模方式 1 Click to edit Master text styles Set all three components of the “Unit vector“ to zero, otherwise it acts like a
6、 permanent magnet. 建模方式 1 建模 方式 2 常规输入 Nonlinear B-H曲线， X Y Z为 0 建模 方式 2 Core Loss Model - Hysteresis Model Hysteresis 建模方式 2 自动打开 B-H曲线，能够输入 Hci Click to edit Master text styles 应用和案例 Example application where the model can be used: - Hysteresis motors - 磁滞电机 - Demagnetization of permanent magnets
7、(due to either opposing or perpendicular fields) - 永磁体退磁分析 - Inrush current in transformers (due to remanance) - 变压器浪涌电流分析（剩磁导致） - Sensors (Variable Reluctance, Hall Effect, etc) - 传感器，如霍尔传感器 - Remnant flux remnant force in actuators - 剩磁力计算 Click to edit Master text styles 案例：磁滞电机 Hysteresis Motor
8、with Hysteresis Material for the Ring Layer of the Rotor. Hc = 50k 0 . 0 0 1 0 . 0 0 2 0 . 0 0 3 0 . 0 0 4 0 . 0 0 5 0 . 0 0 6 0 . 0 0T i m e m s -1 0 0 . 0 0-7 5 . 0 0-5 0 . 0 0-2 5 . 0 00 . 0 02 5 . 0 05 0 . 0 07 5 . 0 01 0 0 . 0 0Y1AM a x w e l l 3 D D e s i g n 1S t a t o r C u r r e n t sC u r
9、v e In f oC u r r e n t ( P h a s e A )S e t u p 1 : T r a n s ie n tC u r r e n t ( P h a s e B )S e t u p 1 : T r a n s ie n tC u r r e n t ( P h a s e C )S e t u p 1 : T r a n s ie n t0 . 0 0 1 0 . 0 0 2 0 . 0 0 3 0 . 0 0 4 0 . 0 0 5 0 . 0 0 6 0 . 0 0T i m e m s -4 . 0 0-3 . 0 0-2 . 0 0-1 . 0 00
10、. 0 01 . 0 02 . 0 03 . 0 04 . 0 0Moving1.TorqueNewtonMeterM a x w e l l 3 D D e s i g n 1T o r q u eC u r v e In f o a v gM o v in g 1 . T o r q u eS e t u p 1 : T r a n s ie n t3 . 4 3 0 8Click to edit Master text styles 案例：磁滞 电机 RMxprt建模 New User Defined Data(UDD): HysThick Description Parameters
11、for hysteresis motor Partial solutions for creating Maxwell 3D designs Using together with SolidCore = 1 HysThick: thickness of the hysteresis layer (mm) Format and Default Value HysThick 0 Machine Types Supported Generic Rotating Machine Click to edit Master text styles 案例：磁滞电机 RMxprt建模 New User De
12、fined Data: Hci & Br Description Used together with the BH curve to create the major hysteresis loop Hci, in A/m, is the intrinsic coercivity of the major hysteresis loop Br, in Tesla, is the residual flux density of the major hysteresis loop Format and Default Value Hci 0 Br 0 Machine Types Support
13、ed Generic Rotating Machine Click to edit Master text styles RMxprt一键生成 maxwell 2D /3D磁滞电机模型 Input Power Stator Resistive Losses Airgap Power Eddy Losses Mechanical Power Hysteresis Losses Airgap Power = Input Power Stator Resistive Losses = 4,203W 1,602W = 2,601W Mechanical Power = Airgap Power Edd
14、y Losses Hysteresis Losses = 2,601W 1,080W 1,012W = 509W Mechanical Power = Torque * Speed = 434W Mechanical Power Residual = 509W 434W = 75W Error = Mechanical Power Residual/Input Power= 75W/4,203W = 1.8% 3D磁滞电机 功率平衡结果 Click to edit Master text styles 磁滞电机一键有限元 demo Click to edit Master text styles 建模器能够满足矢量磁滞的全部基本性能要求 建模器方便的参数输入和识别 矢量磁滞计算精度高 总结 Q & A! 联系方式： B Thank You
