Abstract
This chapter presents the direct rotor field oriented control. The core of the flux oriented control is the estimation of the relevant ACIM parameters, including the rotor flux, rotor resistance and rotor inductance. The speed sensorless control of ACIMs is also introduced in this chapter.
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Notes
- 1.
The angle of the actual slip line can be approximated as \(\tan (\theta )=\frac{R_r}{\hat{R}_r}\frac{i_{sq}}{i_{sd}}\).
- 2.
\({\textbf {e}}_x^T{\textbf {P}}\dot{{\textbf {e}}}_x = \dot{{\textbf {e}}}_x^T{\textbf {P}}{} {\textbf {e}}_x\) and \(\dot{\varPhi }^T\varPhi =\varPhi ^T\dot{\varPhi }\).
- 3.
For \(\dot{{\textbf {x}}}= {\textbf {Ax}}\), then  \(\mathop {}\!\textrm{d}({\textbf {x}}^T{\textbf {Px}})/\mathop {}\!\textrm{d}t = \dot{{\textbf {x}}}^T {\textbf {Px}} + {\textbf {x}}^T{\textbf {P}}\dot{{\textbf {x}}}= {\textbf {x}}^T({\textbf {A}}^T{\textbf {P}}+{\textbf {P}}^T{\textbf {A}}) {\textbf {x}}\).
- 4.
Equation (8.29) does suggest the use of the input variable(s) instead of the state variable(s).
- 5.
Proportional and integral.
- 6.
The system stability requires a limit on the integral gain.
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Shen, S., Chen, Qz. (2024). Rotor Field Oriented Control and Senseless Control. In: Practical Control of Electric Machines for EV/HEVs . Lecture Notes in Electrical Engineering, vol 1064. Springer, Cham. https://doi.org/10.1007/978-3-031-38161-4_8
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DOI: https://doi.org/10.1007/978-3-031-38161-4_8
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