Parameterization Methods

Estimate the back EMF and torque constants of a blackbox permanent magnet synchronous motor (PMSM) with an unknown flux linkage. You can use either the back EMF or torque constant to describe the flux linkage and parameterize a Simscape™ Electrical™ PMSM block. This parameterization allows you to accurately replicate the blackbox motor's behavior in simulation.

Two test harnesses that add confidence that a PMSM is correctly parameterized from a datasheet. It also calculates motor efficiency at rated speed and torque.

Identify PMSM motor parameters from experimental measurements.

Identify the parameters of a supercapacitor. Instead of collecting voltage and current waveforms from a real supercapacitor, this example generates voltage and current waveforms by running a simulation of a supercapacitor using known parameter values. Then the example applies a parameter identification methodology [1] to the waveforms.

Model a solar panel by using data from a manufacturer datasheet. This example uses the datasheet data to generate current-voltage and power-voltage curves for the solar panel. The power-voltage curve helps you identifying the peak power for a given irradiance level and panel cell temperature. This peak power is then useful when designing an inverter.

Import a motor design from Motor-CAD into a Simscape™ simulation.

Optimization of the Battery block's parameters to fit data defined over different temperatures. It uses the MATLAB® optimization function fminsearch. Other products available for performing this type of parameter fitting with Simscape™ Electrical™ models are the Optimization Toolbox™ and Simulink® Design Optimization™. These products provide predefined functions to manipulate and analyze blocks using GUIs or a command line approach.

Import a motor design from ANSYS® Maxwell® into a Simscape™ simulation.

A test harness for a Permanent Magnet Synchronous Motor (PMSM) that validates that the iron losses are as expected. The open-circuit test validates the main flux path losses which are defined to be 500W due to hysteresis and 1500W due to eddy current losses. The short-circuit test validates the cross-tooth flux path losses which are defined to be 200W due to hysteresis and 600W due to eddy current losses.

Optimization of the Solar Cell block's parameters to fit data defined over a range of different temperatures. It uses the MATLAB® optimization function fminsearch. Other products available for performing this type of parameter fitting with Simscape™ Electrical™ models are the Optimization Toolbox™ and Simulink® Design Optimization™. These products provide predefined functions to manipulate and analyze blocks using GUIs or a command line approach.

A limited travel solenoid with return spring. When unpowered, the spring holds the plunger at a distance of 0.1mm from the fully energized position. At 0.1 seconds, the solenoid is powered on and the displacement goes to zero. At 0.06s a force higher than the holding force is applied, and the plunger moves to its maximum travel of 0.2mm. The solenoid force and back emf characteristics are defined by the FEM-Parameterized Linear Actuator block. This block takes data in the format typically provided by a finite element magnetic field modeling tool. There are two parameterization options, one which works directly with flux data, and one which uses partial derivatives of flux with respect to current and displacement. The latter option is usually the better choice, it giving more accurate results for a given density of current and position data points. However, it requires more data pre-processing.

Parameterize and tune a stepper motor using manufacturer datasheet information and a test harness. The model is parameterized using numerical data extracted from a datasheet. The simulation generates pull-in torque characteristics that you can compare to a manufacturer-provided pull-in curve. To tune the stepper motor model, the example uses a test harness that varies the drive type and load parameters.

Demonstrates and validates a set of predefined parameterizations that are supplied with the Simscape™ Electrical™ Stepper Motor block. These predefined parameterizations are determined from manufacturer datasheets.

Build a model of a Switched Reluctance Motor (SRM). A custom Simscape™ composite component is used to construct the three stator pole pairs using the Simscape Electrical™ FEM-Parameterized Rotary Actuator as a base component. The states of the input pins (reverse, on/off) control the torque applied to the motor shaft.

How manufacturer data for torque as a function of current and angle can be used to model a torque motor. The datasheet shows linear characteristics for rotor angles between 20 and 70 degrees and for currents where saturation does not occur. Data in this range is used to parameterize the simplified model of the torque motor. Using MATLAB® to process the data points extracted from the datasheet, we can convert manufacturer data into motor parameters that are often obtained from finite element software.

A typical implementation of a CMOS voltage comparator and how you can convert a SPICE subcircuit to a Simscape™ component using the subcircuit2ssc function. You can use CMOS voltage comparators in analog to digital converter (ADC) or relaxation oscillator circuits.

Troubleshoot the conversion of a SPICE insulated gate bipolar transistor (IGBT) subcircuit and convert it into an equivalent Simscape™ component. The subcircuit2ssc function converts all the subcircuit components inside a SPICE netlist file into one or more equivalent Simscape files. However, in some cases, you must manually edit the original SPICE netlist.

Import a six-phase motor design from Motor-CAD into a Simscape™ simulation. This particular motor is configured with dual wye connections. The example sets out the derivation of the implementation and you can modify it to represent other winding configurations.

Import a motor design from JMAG®-RT into a Simscape™ simulation.

This model represents a harness for calibration of fuel cell (FC) parameters. This example extracts I-V and power characteristic curves from a datasheet. The datasheet also contains specific properties such as the minimum and maximum hydrogen and the air flows.

Import an induction motor design from Motor-CAD™ into a Simscape™ model.

Import a synchronous machine design from Motor-CAD into a Simscape™ simulation. A separate field winding generates a rotor magnetic field in the synchronous machine.

Parameterize the Simscape Electrical Gate Driver block from a manufacturer netlist using LTspice.