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BLDC Configuration

Configure BLDC system parameters

Since R2023b

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Libraries:
Motor Control Blockset HDL Support / Electrical Systems / Motors

Description

The BLDC Configuration block generates the configuration signal for a brushless DC (BLDC) machine or motor. You can use this signal to update parameters of BLDC blocks that support FPGA deployment, such as the BLDC HDL block.

Examples

Six-Step Commutation of BLDC Motor Using Sensor Feedback

Six-Step Commutation of BLDC Motor Using Sensor Feedback

Use six-step commutation technique to control speed and direction of rotation of a three-phase BLDC motor.

Ports

Output

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Configuration signal for a BLDC motor, which includes the following parameters that you configure using this block.

Configuration elementUnits

Number of pole pairs

-

Stator phase resistance per phase

ohm

Stator d-axis inductance

Henries

Stator q-axis inductance

Henries

Permanent magnet flux linkage constant

Weber

Inertia

kgm^2

Back electromotive force, EMF

Vpk_LL/krpm

Vpk_LL is the peak voltage line-to-line measurement

Viscous damping

N·m/(rad/s)

Mechanical input configuration (Torque or Speed)

-

Data Types: single

Parameters

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Block Options

This table summarizes the input and output ports in each port configuration.

Mechanical input configuration parameter valueLdTrq/Spd port configuration

Torque

LdTrq

Speed

Spd

The fixed time interval (in seconds) between every two consecutive instances of block execution.

Parameters

Number of pole pairs, P, in the motor.

Stator phase resistance per phase, Rs , in ohms.

Stator inductance, Ld , in H.

Stator inductance, Lq , in H.

Permanent flux linkage constant, λpm , in Wb.

Physical inertia of the motor, J, in kg.m2.

Viscous damping of the motor, F, in Nm/(rad/s).

Static friction in the motor, Tf , in Nm.

Version History

Introduced in R2023b

See Also

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