UM0324 datasheet(35/105 Pages) STMICROELECTRONICS

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UM0324

Library functions

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Library functions

4.1

Function description conventions

Functions are described in the format given below:

Some of these sections may not be included if not applicable (for example, no parameters or

obvious use).

4.2

Current reading in three shunt resistor topology and space

vector PWM generation: 75x_svpwm_3shunt module

4.2.1

Overview

Two important tasks are performed in the 75x_svpwm_3shunt module:

●

Space vector pulse width modulation (SVPWM)

●

Current reading in three shunt resistor topology

In order to reconstruct the currents flowing through a three-phase load with the required

accuracy using three shunt resistors, it is necessary to properly synchronize A/D

conversions with the generated PWM signals. This is why the two tasks are included in a

single software module.

Synopsis

Lists the prototype declarations.

Description

Describes the functions specifically with a brief explanation of how they

are executed.

Input

Gives the format and units.

Returns

Gives the value returned by the function, including when an input value

is out of range or an error code is returned.

Note

Indicates the limits of the function or specific requirements that must be

taken into account before implementation.

Caution

Indicates important points that must be taken into account to prevent

hardware failures.

Functions called

Lists called functions. Useful to prevent conflicts due to the

simultaneous use of resources.

Code example

Indicates the proper way to use the function, and if there are certain

prerequisites (interrupt enabled, etc.).

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