Motor control daughterboard aids provides space vector modulation

A motor control daughterboard for low cost space vector modulation build for the STMicroelectronics Nucleo-8S208RB kit, has been announced by Future Electronics. The Spinnaker board is a development platform for the STM8S series of low-cost, and is supplied with library of software for implementing space vector modulation

The Spinnaker motor control daughterboard is also supplied with an intuitive PC graphical user interface (GUI) to support motor control project development.

The daughterboard is the rapid prototyping platform for motor control applications based on the use of an 8-bit microcontroller. Target applications are in the automotive, industrial, consumer and home automation. The Spinnaker board is rated for operation at temperatures up to 150 degrees C.

The Spinnaker board implements the space vector modulation (SVM) method of motor control, which is usually not suited to 8-bit microcontrollers. The motor control software running on the STM8S microcontroller occupies a small flash memory footprint of less than 8kbytes and requires less than 1.5kbytes of RAM. It includes an algorithm for speed control and flux reduction, and controls motor position at a resolution of 384 steps per revolution.

Compared to block commutation, SVM offers low acoustic noise and no torque ripple, reports Future Electronics.

The Spinnaker design implements a low-cost, three-phase power stage composed of six 60V STL20N6F7 MOSFETs from STMicroelectronics. The daughterboard runs with up to 24V.

It also includes a USB Type-C power supply controlled by an STMicroelectronics STUSB4500, and a Panasonic supercapacitor-based back-up power supply to provide for safe shut-down in the case of an unexpected power failure.

The board’s metal composite inductors, from the Panasonic ETPQ series and the IHLP series from Vishay, have a small board footprint and offer DC current saturation and temperature stability characteristics.

The Spinnaker development board will be available at the in Q2 2019 free of charge to qualified customers of Future Electronics. The board is supplied with hardware and software design files and a PC GUI.

Visit Future Electronics at Embedded World (Hall 3, stand 3-225)

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