Using the STEVAL-IHM021V1 with the STM32 FOC firmware library

UM0580

20/24

9

Using the STEVAL-IHM021V1 with the STM32 FOC

firmware library

oriented control (FOC) of a permanent magnet synchronous motor (PMSM) in both sensor

and sensorless configurations.

v2.0

" in order for the firmware to be compatible with the STEVAL-IHM021V1.

9.1

Environmental considerations

Warning:

The STEVAL-IHM021V1 demonstration board must only be

used in a power laboratory. The voltage used in the drive

system presents a shock hazard.

The kit is not electrically isolated from the DC input. This topology is very common in motor

drives. The microprocessor is grounded by the integrated ground of the DC bus. The

microprocessor and associated circuitry are hot and MUST be isolated from user controls

and communication interfaces.

Warning:

Any measurement equipment must be isolated from the main

power supply before powering up the motor drive. To use an

oscilloscope with the kit, it is safer to isolate the DC supply

AND the oscilloscope. This prevents a shock from occurring

as a result of touching any single point in the circuit, but

does NOT prevent shocks when touching two or more points

in the circuit.

An isolated AC power supply can be constructed using an isolation transformer and a

variable transformer. A schematic of this AC power supply is shown in the application note

application note was written for TRIAC, the isolation constraints still apply for switching

semiconductor devices such as MOSFETs.

Note:

Isolating the application rather than the oscilloscope is highly recommended in any case.