STMicroelectronics AN1905 ST7MC Three-Phase BLDC Motor Control Software Library Application Note

About this manual

The document details the ST7MC Three-Phase BLDC Motor Control Software Library, designed for use with the ST7ZMC MCU. It covers control of permanent magnet DC/AC motors (PMDC/PMAC) and induction AC motors in various modes, including trapezoidal 6-step drive and sensorless operation.

The library is compatible with COSMIC and METROWERKS toolchains and includes C modules for motor control cells (MTC). It supports both open-loop and closed-loop operations using voltage or current feedback. The note provides instructions on getting started with the tools, customizing the workspace, running the motor, and defining new modules.

What's inside

• Introduction
• Overall Software Architecture
• Getting Started with Tools
• Customizing the Workspace
• Getting Started with the Library
• Modules Presentation
• How to Define a Module
• Code Example
• PMDC Motor Considerations
• Revision History

Specifications

Frequently asked questions

What motors does this library control?

It controls permanent magnet DC/AC motors (PMDC/PMAC also called BLDC) and induction AC motors.

Is sensorless operation supported?

Yes, the library supports sensorless mode by monitoring Back EMF voltage on the non-energized phase.

Which C toolchains are compatible?

The library is compatible with both COSMIC and METROWERKS toolchains.