Motor Parameter Estimation and Plant Modeling

Compute estimated motor parameters and create plant model

Use the parameter estimation tool to estimate the motor parameters and create a plant model that accurately depicts the hardware that interfaces with the motor.

Note

The blocks listed here are compliant with the MISRA C™ guidelines.

Functions

`mcb.getPMSMParameters`	Return PMSM parameters
`mcb.getACIMParameters`	Return ACIM parameters (Since R2022a)
`mcb.getInverterParameters`	Return inverter parameters
`mcb.getProcessorParameters`	Return processor parameters
`mcb.getMotorBaseSpeed`	Compute base speed for PMSM at rated voltage and rated load
`mcb.getPUSystemParameters`	Compute base values for per-unit system for selected motor and inverter
`mcb.getSISystemParameters`	Compute base values for SI system for selected motor
`mcb.updateInverterParameters`	Update inverter parameters for selected hardware and motor

Blocks

expand all

Electrical Systems

Inverters

Average Value Inverter	Compute three-phase AC voltage from inverter DC voltage
BLDC Average-Value Inverter	Compute three-phase trapezoidal AC voltage from inverter DC voltage (Since R2023a)

Motors

Interior PMSM	Three-phase interior permanent magnet synchronous motor with sinusoidal back electromotive force
Surface Mount PMSM	Three-phase exterior permanent magnet synchronous motor with sinusoidal back electromotive force
Induction Motor	Three-phase induction motor
PMSM Configuration	Configure PMSM system parameters (Since R2022b)
PMSM HDL	Three-phase permanent magnet synchronous motor with sinusoidal back electromotive force (Since R2022b)
Induction Motor Configuration	Configure system parameters of induction motor (Since R2022b)
Induction Motor HDL	Three-phase induction motor (Since R2022b)
BLDC	Three-phase brushless DC motor with trapezoidal flux distribution (Since R2023a)
BLDC Configuration	Configure BLDC system parameters (Since R2023b)
BLDC HDL	Three-phase brushless DC motor with trapezoidal flux distribution (Since R2023b)

Parameter Estimation

PMSM Parameter Estimation

PMSM Parameter Estimation Configurator	Generate configuration elements for PMSM parameter estimation (Since R2023a)
PMSM Rs Estimator	Estimate stator resistance (R_s) of permanent magnet synchronous motor (PMSM) (Since R2023a)
Ld Estimator	Estimate stator inductance (L_d) of permanent magnet synchronous motor (PMSM) (Since R2023a)
Lq Estimator	Estimate stator inductance (L_q) of permanent magnet synchronous motor (PMSM) (Since R2023a)
PMSM Mechanical Parameter Estimator	Estimate back EMF constant, rotor inertia, and viscous damping of permanent magnet synchronous motor (PMSM) (Since R2023a)

ACIM Parameter Estimation

ACIM Parameter Estimation Configurator	Generate configuration elements for AC induction motor (ACIM) parameter estimation (Since R2023a)
Id0 Estimator	Estimate magnetizing current (I_d0) of AC induction motor (ACIM) (Since R2023a)
ACIM Rs Estimator	Estimate stator resistance (R_s) of AC induction motor (ACIM) (Since R2023a)
RrL Estimator	Estimate rotor resistance (R_r), magnetizing inductance (L_m), stator leakage inductance (L_ls), and rotor leakage inductance (L_lr) of AC induction motor (ACIM) (Since R2023a)
ACIM Mechanical Parameter Estimator	Estimate rotor inertia and viscous damping of AC induction motor (ACIM) (Since R2023a)

Apps

Motor Hardware Configurator	Configure and validate motor and control hardware (Since R2024b)
Motor Parameter Estimator	Estimate electrical and mechanical parameters of motor connected to control hardware (Since R2024b)
Motor Characteristic Analyzer	Analyze motor characteristic plots and constraint curves (Since R2025a)

Topics

Estimate Motor Parameters Using Motor Control Blockset Parameter Estimation Tool
Estimate motor parameters by using parameter estimation feature in Motor Control Blockset™.
Creating Plant Model Using Motor Control Blockset

Create and verify the plant model.
- STEP 1: Use PMSM Block and Motor Parameters to Design Plant Model
- STEP 2: Add Average-Value Inverter Block
- STEP 3: Create Motor Phase Current Sensing and Signal Conditioning Subsystem
- STEP 4: Create Position Sensing Subsystem
- STEP 5: Add Delay in Plant Model
- STEP 6: Integrate Blocks and Subsystems
Estimate Control Gains and Tune Control Parameters
Perform control parameter tuning for speed and torque control subsystems.
Simulate PMSM Parameter Estimations
Use parameter estimation blocks to simulate PMSM resistance, inductance, and back EMF estimations. (Since R2026a)

Featured Examples

Estimate PMSM Parameters Using Custom Hardware

Includes an algorithm to determine the parameters of a permanent magnet synchronous motor (PMSM) using any custom motor-control hardware (hardware not used in the Motor Control Blockset™ examples). The algorithm determines these parameters:

Open Example

Estimate PMSM Parameters Using Parameter Estimation Blocks

Uses the parameter estimation blocks provided by Motor Control Blockset™ to estimate these parameters of a permanent magnet synchronous motor (PMSM) with a quadrature encoder sensor:

Open Model

Estimate PMSM Parameters Using Parameter Estimation Blocks on Real-Time Systems

Uses the parameter estimation blocks provided by Motor Control Blockset™ to estimate these parameters of a permanent magnet synchronous motor (PMSM):

Open Model

Estimate PMSM Parameters Using FPGA-Based Motor Control Development Kit

Estimate parameters of a permanent magnet synchronous motor (PMSM) using blocks from Motor Control Blockset™ on an FPGA device (Trenz Electronic™ Motor Control Development Kit TE0820).

Open Script