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| If you want to... | Turn to this chapter... | Extract this insight... | | :--- | :--- | :--- | | Tune a PI current controller | The complex transfer function of the machine | The cross-coupling terms (d-axis affects q-axis). You need terms. | | Implement Sensorless FOC | Estimation of rotor flux vector | The "Voltage Model" (good at high speed) vs. "Current Model" (good at zero speed). | | Avoid inverter desaturation | Voltage space vector limits | The maximum radius of the voltage vector is the DC bus voltage / √3. The book explains the "modulation index." | | Reduce torque ripple | Effects of inverter dead-time | How dead-time distorts the voltage vector, creating 6th harmonic torque pulsations. |
From to sensorless estimation techniques, the space vector approach provides the foundation for eliminating bulky speed sensors, relying instead on "observers" that calculate motor state based on voltage and current vectors. Practical Applications in Industry | If you want to
) reference frame, engineers can treat an AC motor with the same mathematical simplicity as a separately excited DC motor. Why This Monograph is "Exclusive" in its Field | | :--- | :--- | :--- |
Electrical machines and drives can be used without any prior knowledge of space-vector or other theories; it is aimed at students, Oxford University Press "Current Model" (good at zero speed)