| Abstract |
The aim of this paper is to compare the sensitivity of the flux control to the parameter uncertainties in two induction actuator indirect field oriented control schemes. In the first control schema, the currents are controlled by PI regulators, whereas in the second one the currents are not directly controlled. In this second schema, interesting for small power motors, the stator currents are not measured but only estimated, what simplifies the hardware implementation. lt is shown that, in the control schema without current control, the flux control is less sensitive to errors on the values of the mutual inductance and of the rotor resistance than in the control schema with current PI regulators. This is demonstrated by a theoretical study and digital simulations. Furthermore the good performance of the control schema without current measurement, which is less common than the control schema with current control, is shown by experimental results. |
