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The losses in electric drives are an important factors to determinate the rating of inverter switches. In this study we develop a new Pulse Width Modulation (PWM) to decrease the inverter losses. This new PWM method gives less inverter commutation losses than classical PWM, especially in high carrier frequency. The new method decrease the volume and price of drive. To simulate the conduction and commutation...
It is knownthatmechanical sensorless control of PMSM is sensitive to the stator resistance uncertainties. In this paper, the influence of these uncertainties on the sensorless control is studied and a simple method improving the control performances is proposed. This method consists in imposing a proportional relationship between the stator current components. It makes the sensorless control law...
In order to increase the availability of the embarked actuators one solution is to equip them with double-star machines. To increase their compactness the permanent magnet synchronous machines (PMSM) are usually preferred. In this paper the degraded operating modes under fault conditions of a double star PMSM supplied by two independent electrical sources trough two VSI is studied. The considered...
In this paper, a new hybrid non-linear current controller for imposing the output current of single-phase voltage source converters is proposed and studied. This hybrid controller, called "modulated hysteresis" controller, combines in one hand the robustness properties of a hysteresis controller and on the other hand the zero static error of a linear PI controller. In addition it allows...
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