Current Sensor
R2026bCurrent sensor in electrical systems
Current Sensor block
To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.
Libraries:
Simscape /
Foundation Library /
Electrical /
Electrical Sensors
Simscape /
Electrical /
Sensors & Transducers
Description
The Current Sensor block represents an ideal current sensor, that is, a device that converts current measured in any electrical branch into a physical signal proportional to the current.
Use the + and - ports to connect the sensor in series with the other blocks in the branch where you want to measure the current. Port I outputs the measurement result as a physical signal. Use a PS-Simulink Converter block to connect this port to Simulink® blocks, such as Scope or Display.
Examples
Nonlinear Inductor
An implementation of a nonlinear inductor where inductance depends on current. A tanh function defines the nonlinear flux-current relationship. The flux saturates for large currents, which can occur, for example, in iron core inductors.
Shunt Motor
A model of a shunt motor. In a shunt motor, the field and armature windings are connected in parallel. Equivalent circuit parameters are armature resistance Ra = 110 Ohms, field resistance Rf = 2.46KOhms, and back emf coefficient Laf = 5.11. The back-emf is given by Laf*If*Ia*w, where If is the field current, Ia is the armature current, and w is the rotor speed in radians/s. The rotor inertia J is 2.2e-4kgm^2, and rotor damping B is 2.8e-6Nm/(radian/s).
Electrical Transformer
Model a transformer using fundamental magnetic library blocks. The transformer is rated 50W, 60 Hz, 120V/12V and assumed to have an efficiency of 94%, no-load magnetizing current of 1% and a leakage reactance of 2.3%. Core losses are not modeled and the core material B-H characteristic is assumed to be linear.
Ports
Output
Conserving
Extended Capabilities
Version History
Introduced in R2007a
