![]() Stator flux vector and torque estimation is required. Coordinate transformation is not required.ģ. The DTC scheme has the following features.ġ.There are no current loops hence the current is not regulated directly.Ģ. The field-oriented control (FOC) approach offers many advantages compared to other control strategies used with electric motors. This gives the induction motor drives a very fast response. Based on this information, a certain voltage vector or combination of voltage vectors is directly applied to the inverter with a certain average timing. The direct torque control is also different from vector control in the sense that the reference frame here is stator flux instead of rotor flux used in vector control.The input to the direct toque controller are the torque error, error in magnitude of the stator flux space vector, and the angle of the stator flux space vector, from which the states of the power switches are determined. Due to a permanent magnet rotor, PMSM motors have very high efficiency, reliability and are fast in response. ![]() ![]() In a direct torque control the first five components are replaced by two hysteresis comparators and a selection table.The direct torque control is different from vector control in such a way, that it does not control the flux through the current control, but it directly controls the flux itself. This paper details the implementation of Field Oriented Control (FOC) of Permanent Magnet Synchronous Motor (PMSM) using indirect current control method. Current and/or voltage decoupling network.Generally FOC consists of the following components, ![]()
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