Despite their different structures, all 3-phase permanent magnet motors (BLDC, PMSM or PMAC) are driven by a PWM-modulated three-phase bridge (three half bridges) so as to supply the motor with variable frequency and amplitude three-phase voltages and currents.
3-phase 6-STEP Control
In a 6-step, or scalar control, normally only the frequency and magnitude of the voltage fed to the motor are controlled while current feedback is not mandatory.
View application 3-phase Field Oriented Control (FOC)
Field-oriented control (FOC), or vector control, is a technique for variable frequency control of the stator in a three phase AC induction motor drive using two orthogonal components. One defines the magnetic flux generated by the stator, while the o
View application Our products and solutions
To provide the highest level of design flexibility, ST’s product portfolio includes specific products for both high and low-voltage applications like monolithic drivers ICs, power MOSFETs, IGBTs, gate drivers, power modules and dedicated microcontrollers to address a broad range of motor control applications.
All resources
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Application Notes (5 of 9)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 04 Nov 2021 | 04 Nov 2021 | ||
| 1.0 | 28 Feb 2020 | 28 Feb 2020 | ||
| 1.1 | 07 Feb 2019 | 07 Feb 2019 | ||
| 1.0 | 02 Apr 2020 | 02 Apr 2020 | ||
| 2.1 | 06 Aug 2021 | 06 Aug 2021 | ||
| 2.0 | 06 Aug 2021 | 06 Aug 2021 | ||
| 2.0 | 06 Aug 2021 | 06 Aug 2021 | ||
| 1.3 | 14 Oct 2019 | 14 Oct 2019 | ||
| 1.6 | 19 Mar 2021 | 19 Mar 2021 |
Design Notes & Tips (2)
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| 2.1 | 19 Mar 2021 | 19 Mar 2021 | ||
| 2.3 | 13 Sep 2018 | 13 Sep 2018 |
Presentations (2)
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| 1.0 | 26 Mar 2021 | 26 Mar 2021 | ||
| 2.1 | 14 Mar 2019 | 14 Mar 2019 |
Flyers (2)
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| 1.0 | 19 Mar 2021 | 19 Mar 2021 | ||
| 08.2017 | 09 Apr 2018 | 09 Apr 2018 |
Selection Guides (1)
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| 1.0 | 07 Apr 2021 | 07 Apr 2021 |
Brochures (1)
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| 10.21 | 04 Nov 2021 | 04 Nov 2021 |
Magazine Articles (1)
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| 1.0 | 25 Feb 2020 | 25 Feb 2020 |
