Abstract
This chapter and Chapter 5, through Chapter 8, discuss the high-performance motor control of three-phase alternating current (AC) motors. First, in this chapter, the modeling of the three-phase AC motors and d–q reference frame theory used in the high-performance control of AC motors are introduced. A model of AC motors, which describes their dynamic performance and steady-state performance, is examined. As a model for AC motors, the voltage expressed in abc variables is first explored. The reference frame transformation used to easily analyze this complex model expressed in time-varying differential equations is introduced. For induction motors and permanent magnet synchronous motors containing surface-mounted permanent magnet synchronous motors and interior permanent magnet synchronous motors, the models expressed in dq variables by using the reference frame transformation are introduced. These models are necessary to employ the vector control of AC motors. Finally, a MATLAB/Simulink simulation using the d–q axes model of an induction motor is introduced.
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