Clark transform has a wide range of applications. In order to facilitate the explanation of its physical meaning, here we only take the stator current of a three-phase asynchronous motor as an example to illustrate the Clark transform: First, understand the meaning of coordinates. In the stationary abc system, the coordinates [ia ib ic]t represent the stator current vector.
Stuff They Don't Want You to Know By Ben Bowlin, Matt Frederick, Noel