Every modern control technique (Field-Oriented Control, Direct Torque Control, Space Vector Modulation) rests on the d-q axis model. Jones’ unified theory provides the most rigorous, accessible derivation of these models. If you want to truly understand vector control of an induction motor—not just implement a library in MATLAB—you need Jones.
: Providing the groundwork for modern control techniques like Field Oriented Control (FOC) and Direct Torque Control (DTC) used in electric vehicle drives. The Unified Theory Of Electrical Machines By C.v. Jones Pdf