Browsing Technology Innovation and Engineering Education Unit by Author "Ben-Brahim, L."

Now showing items 1-6 of 6

    • A Discontinuous PWM Method for Balancing the Neutral Point Voltage in Three-Level Inverter-Fed Variable Frequency Drives 

      Ben-Brahim, L. ( IEEE , 2008 , Article)
      The paper describes a new discontinuous carrier-based pulsewidth modulation (PWM) method for use in variable frequency drives (VFD) driven by three-level inverters. The method introduces three different switching patterns ...

    • Iterative learning control for variable frequency drives 

      Ben-Brahim, L. ( IEEE , 2008 , Conference Paper)
      Variable Frequency Drives (VFD) are subject to various types of disturbances especially cyclical ones. These periodic disturbances are difficult to compensate by conventional controllers. Repetitive control can only ...

    • A New Low Cost Linear Resolver Converter 

      Ben-Brahim, L.; Benammar, M.; Alhamadi, M.A.; Al-Emadi, N.; Al-Hitmi, M.A. ( IEEE , 2008 , Article)
      A new low cost converter topology is proposed for sinusoidal position encoders. The converter enables determination of the angle from the sine and cosine signals of the encoder. When used with resolvers, the implementation ...

    • An open-loop technique for angle determination from position encoders 

      Benammar, M.; Ben-Brahim, L.; Alhamadi, M.A.; Al-Emadi, N.; Al-Hitmi, M. ( IEEE , 2008 , Conference Paper)
      The paper presents a novel technique for the determination of the angle from low-frequency quadrature cosinusoidal signals produced, for example, by position sensors. In the presented scheme applied to a resolver, the ...

    • A Resolver Angle Estimator Based on Its Excitation Signal 

      Ben-Brahim, L.; Benammar, M.; Alhamadi, M.A. ( IEEE , 2009 , Article)
      A resolver generates a pair of signals proportional to the sine and cosine of the angular position of its shaft. A new low-cost method for converting the amplitudes of these sine/cosine transducer signals into a measure ...

    • A resolver converter based upon a novel open-Loop Technique 

      Benammar, M.; Ben-Brahim, L.; Alhamadi, M.A.; Al-Emadi, N.; Al-Hitmi, M. ( IEEE , 2008 , Conference Paper)
      The paper presents a novel technique for the determination of the angle from slowly-varying quadrature co-sinusoidal signals produced, for example, by position sensors. In the presented scheme applied to a resolver, the ...