All Low Frequency Applications

RFID And Wireless Power Transfer Simulation From Tag to System

RFID And Wireless Power Transfer Simulation From Tag to System Document type
This article discusses the design and modeling of both low frequency (LF) and high frequency (HF) RFID devices using CST® STUDIO SUITE®. This can be done at the level of the individual tag, but also for the entire system, including the reader, the tagged object and its surroundings. Analyzing the entire system with simulation allows the suitability of the chosen RFID system for the application to be investigated, and can reveal unforeseen interactions that can be hard to identify with measurement alone. Read full article..

CST Sensor Flyer

CST Sensor Flyer Document type
The electromagnetic field and its accurate measurement plays an important role in a wide range of sensor applications. CST STUDIO SUITE® allows the simulation of electromagnetic fi elds in such devices and uses a range of state-of-the art Finite Element Method (FEM) and other complementary simulation methods. The user can choose the best method for efficiently modelling the sensor at hand. This is combined with an easy-to-use but powerful graphical user interface, comprehensive CAD and EDA import and application-oriented workflows. Read full article..

Parametric magnetic field analysis of a Shaded Ring Sensor

Parametric magnetic field analysis of a Shaded Ring Sensor
There are several types of position sensors based on different concepts. This article is concerned with the efficient electromagnetic field simulation of a shaded ring sensor for automotive applications such as the position sensing of a regulating rod in inline injection pumps or, in angular form, in distribution injection pumps. The CST EM STUDIO® low frequency time-harmonic solver is used in parametric mode to obtain the change in impedance as a function of distance between a moveable shaded ring and a fixed stranded coil. Read full article..

Siemens Energy Optimises Power Transformers with the Aid of 3D EM Simulation

Siemens Energy Optimises Power Transformers with the Aid of 3D EM Simulation Document type
Finding customised solutions for any applications and specifications of transformers – this is the task of Siemens Energy T TR PN. It is difficult to obtain off-the-shelf solutions for furnace and converter transformers as well as transformers for High Voltage Direct Current for ratings greater than 200 MVA. 3D EM Simulation with CST EM STUDIO® (CST EMS) is a vital tool in the optimisation process of transformer installations. Read full article..

Coupled EM-Thermal Modeling of Power Chokes

Coupled EM-Thermal Modeling of Power Chokes
Power chokes are used together with inverters (e.g. solar inverters) to reduce EMC issues. CST EM STUDIO® (CST EMS) can be used to calculate the electric losses in the choke winding of a power choke, and these losses can be used as a heat source to simulate temperature distributions using the thermal solvers in CST MPHYSICS® STUDIO (CST MPS). Read full article..

Sensitivity Computation of an Inductive Proximity Sensor

Sensitivity Computation of an Inductive Proximity Sensor
Proximity sensors enable in a simple manner position, size and material of a metal target to be established. Such sensors are in the ability to obtain absolute analog signals proportional to proximity and are compact, robust and reliable constructions. Read full article..

3D EM Simulation of a resistance spot welding gun

3D EM Simulation of a resistance spot welding gun
This article is concerned with the 3D electromagnetic modelling and equivalent circuit parameter extraction of a Resistance Spot Welding (RSW) gun. The parameters for the gun are not as easily established for the gun as for other RSW system components. The current transformer and electronic converter electrical parameters are either known or can be obtained by standard test procedures. This is not the case for the gun where the electrical parameters are unknown and difficult to measure. A 3D EM simulation using CST EM STUDIO® can be used to establish these parameters and complete the system characterisation. Read full article..

Siemens Energy optimises power transformers with the aid of 3D EM Simulation

Siemens Energy optimises power transformers with the aid of 3D EM Simulation
Finding customised solutions for any applications and specifications of transformers – this is the task of Siemens Energy T TR PN. It is difficult to obtain off-the-shelf solutions for furnace and converter transformers as well as transformers for High Voltage Direct Current for ratings greater than 200 MVA. 3D EM Simulation with CST EM STUDIO® (CST EMS) is a vital tool in the optimisation process of transformer installations. Siemens Energy optimises power transformers with the aid of 3D EM Simulation Read full article..

3D Non-linear Transient Simulation of an SF6 550 kV 3-Phase Gas Insulated Bus

3D Non-linear Transient Simulation of an SF6 550 kV 3-Phase Gas Insulated Bus
The combination of non-linear materials and eddy currents leads to a problem which cannot be solved with a steady-state eddy current solver. A transient solver is required and and inherently includes the feature that arbitrary time signals can be used for the excitation. The CST EM STUDIO® (CST EMS) transient solver allows such a simulation to be carried out. In this case, a Gas insulated Bus under short circuit conditions is investigated. The forces and losses on the bus bars can be calculated as a function of time. Read full article..

Solution of eddy current non linear problems

Solution of eddy current non linear problems Document type
Fabio Freschi, Politecnico di Torino The work presents a two stage approach to solve a class of nonlinear 3D eddy current problems with high saturation, typical of induction heating processes. The proposed method separates the problem of heavy nonlinearity from the complexity of the geometry, by resorting to a 1D fast nonlinear solver which is coupled with a CST 3D solver. Under certain hypotheses on the geometry, the approach is shown to be effective and accurate. Comparison with the full 3d nonlinear approach obtained with a commercial code will be provided. Read full article..

Low frequency simulation of a Gas Insulated Switchgear

Low frequency simulation of a Gas Insulated Switchgear
The simulation of a gas insulated switch at 50 Hz is simulated with the low frequency solver in CST EM STUDIO™ (CST EMS). A Pro/E® model is imported, appropriate three-phased sources defined and a simulation performed to obtain the current distributions in the three phase conductors. Read full article..

Electroquasistatic Simulation of a High Voltage Insulator

Electroquasistatic Simulation of a High Voltage Insulator
This article demonstrates the application of the CST EM STUDIO™ (CST EMS) electroquasistatic (EQS) solver to the simulation of a high voltage insulator. It also demonstrates the difference between the results obtained from the EQS Solver and Electro-Static Solver. Read full article..

TEAM Benchmark 7 - Asymmetrical conductor model with a hole

TEAM Benchmark 7 - Asymmetrical conductor model with a hole
This article presents the results of a CST EM STUDIO™ (CST EMS) low frequency simulation of the TEAM Workshop Benchmark 7. The excellent simulation performance of the low frequency solver is demonstrated. Read full article..

TEAM Benchmark 8 - Non-destructive testing example : Coil above a crack

TEAM Benchmark 8 - Non-destructive testing example : Coil above a crack
The TEAM Workshop Benchmark Problem no. 8 - Coil above a crack - is solved with CST EM STUDIO™. Results are compared with measurements. Read full article..

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