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This paper presents the simulation and experimental results of a 42 V fault-tolerant six-phase induction machine (6PIM) with opened stator phases. The 6PIM has symmetrical 60 degrees displacement winding allowing fault-tolerant modes for an electric power steering (EPS) application. A voltage source inverter (VSI) in closed-loop using a vector control feeds its. The 6PIM model is derived from the...
This paper presents design and implementation of a sensorless speed control with DTFC (direct torque and flux control) strategy for induction motor. The DTFC in its conventional form uses algorithms to select the components of the voltage inverter. This paper proposes to replace the conventional selector switches statements of the voltage inverter by a selector based on neural networks ANN (artificial...
In this paper, a Doubly Fed Induction Machine (DFIM) operating in motor mode and supplied by two Voltage Source Inverters (VSI), in stator and rotor sides, is presented. The aim is to analyze the position sensor fault effects on a Direct Torque Control (DTC) of the DFIM. This justifies the necessity of a reconfiguration control when a position sensor fault appears in order to avoid an interruption...
Brushless DC (BLDC) motors are used in a wide variety of applications and have been well investigated in the literature. In a typical low-cost drive the voltage source inverter is controlled by the signals produced by three Hall effect sensors that are used to detect the rotor position. These sensors are supposed to be positioned exactly 120 electrical degrees apart. However, this assumption may not...
The presented study is focused on a doubly fed induction machine (DFIM) applied in motor working. Its stator and rotor windings are connected to voltage sources inverters (VSI). This speed drive can be used for high power applications. Power supply of this motor is divided into two parts by the means of a power dispatching ratio. Moreover, this system provides some interesting degrees of freedom....
Direct torque control (DTC) can directly control the inverter states in order to reduce the torque error within the prefixed band limit DTC of brushless dc drive with trapezoidal back-EMF is presented in this paper. Using the rotor flux vector position in alpha - beta axis stationary reference frame and torque error, the proper switching pattern can be selected to control the generated torque and...
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