The Experts below are selected from a list of 24798 Experts worldwide ranked by ideXlab platform
Z Islam - One of the best experts on this subject based on the ideXlab platform.
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field programmable gate array based Pulse Width Modulation for single phase active power filter
American Journal of Applied Sciences, 2009Co-Authors: N A Rahim, Z IslamAbstract:Problem statement: The design and implementation of a sinusoidal Pulse-Width Modulation (PWM) generator for a single-phase hybrid power filter is presented. Approach: The PWM was developed in an Altera® Flex 10 K Field Programmable Gate Array (FPGA) and the Modulation index was selected by calculating the DC bus voltage of the active filter through a digital controller, by Proportional-Integral-Derivative (PID) technique. Results: Experiment results showed the proposed active power filter topology to be capable of compensating the load current and the voltage harmonic, up to IEC limit. Conclusion: The implemented PWM generator using an FPGA required less memory usage while providing flexible PWM patterns whether same phase, lagging, or leading, the reference voltage signal.
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field programmable gate array based Pulse Width Modulation for single phase active power filter
American Journal of Applied Sciences, 2009Co-Authors: N A Rahim, Z IslamAbstract:Problem statement: The design and implementation of a sinusoidal Pulse-Width Modulation (PWM) generator for a single-phase hybrid power filter is presented. Approach: The PWM was developed in an Altera® Flex 10 K Field Programmable Gate Array (FPGA) and the Modulation index was selected by calculating the DC bus voltage of the active filter through a digital controller, by Proportional-Integral-Derivative (PID) technique. Results: Experiment results showed the proposed active power filter topology to be capable of compensating the load current and the voltage harmonic, up to IEC limit. Conclusion: The implemented PWM generator using an FPGA required less memory usage while providing flexible PWM patterns whether same phase, lagging, or leading, the reference voltage signal.
Christian Vogel - One of the best experts on this subject based on the ideXlab platform.
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aliasing free digital Pulse Width Modulation for burst mode rf transmitters
IEEE Transactions on Circuits and Systems, 2013Co-Authors: Katharina Hausmair, Peter Singerl, Christian VogelAbstract:Burst-mode operation of power amplifiers (PAs) is a promising concept towards higher power efficiency in radio frequency (RF) transmitters. Such transmitters use Pulse-Width Modulation (PWM) to create the driving signal for the PA, and a reconstruction filter after amplification to obtain the transmission signal. However, conventional digital Pulse-Width modulated signals contain a large amount of distortion that cannot be removed by the reconstruction filter in a satisfactory manner.
J Vilain - One of the best experts on this subject based on the ideXlab platform.
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a direct digital technique implementation of general discontinuous Pulse Width Modulation strategy
IEEE Transactions on Industrial Electronics, 2011Co-Authors: J Hobraiche, Nicolas Patin, Guy Friedrich, J VilainAbstract:This paper presents direct digital technique-generalized discontinuous Pulse Width Modulation (PWM) - a new implementation method for an optimal discontinuous PWM (DPWM) in terms of switching losses of the inverter on an embedded system. At each sampling period, an optimal choice is done in order to clamp one of the three half-bridges. Its advantages compared to classic ones (DPWM) are as follows: needless to know the load power factor, operational under steady-state and dynamic operating conditions, and low computation time. The proposed algorithm is then verified by simulation. Experimental results, based on a resistance-inductance load and a starter-generator application, are provided to show its effectiveness.
N A Rahim - One of the best experts on this subject based on the ideXlab platform.
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field programmable gate array based Pulse Width Modulation for single phase active power filter
American Journal of Applied Sciences, 2009Co-Authors: N A Rahim, Z IslamAbstract:Problem statement: The design and implementation of a sinusoidal Pulse-Width Modulation (PWM) generator for a single-phase hybrid power filter is presented. Approach: The PWM was developed in an Altera® Flex 10 K Field Programmable Gate Array (FPGA) and the Modulation index was selected by calculating the DC bus voltage of the active filter through a digital controller, by Proportional-Integral-Derivative (PID) technique. Results: Experiment results showed the proposed active power filter topology to be capable of compensating the load current and the voltage harmonic, up to IEC limit. Conclusion: The implemented PWM generator using an FPGA required less memory usage while providing flexible PWM patterns whether same phase, lagging, or leading, the reference voltage signal.
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field programmable gate array based Pulse Width Modulation for single phase active power filter
American Journal of Applied Sciences, 2009Co-Authors: N A Rahim, Z IslamAbstract:Problem statement: The design and implementation of a sinusoidal Pulse-Width Modulation (PWM) generator for a single-phase hybrid power filter is presented. Approach: The PWM was developed in an Altera® Flex 10 K Field Programmable Gate Array (FPGA) and the Modulation index was selected by calculating the DC bus voltage of the active filter through a digital controller, by Proportional-Integral-Derivative (PID) technique. Results: Experiment results showed the proposed active power filter topology to be capable of compensating the load current and the voltage harmonic, up to IEC limit. Conclusion: The implemented PWM generator using an FPGA required less memory usage while providing flexible PWM patterns whether same phase, lagging, or leading, the reference voltage signal.
Katharina Hausmair - One of the best experts on this subject based on the ideXlab platform.
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aliasing free digital Pulse Width Modulation for burst mode rf transmitters
IEEE Transactions on Circuits and Systems, 2013Co-Authors: Katharina Hausmair, Peter Singerl, Christian VogelAbstract:Burst-mode operation of power amplifiers (PAs) is a promising concept towards higher power efficiency in radio frequency (RF) transmitters. Such transmitters use Pulse-Width Modulation (PWM) to create the driving signal for the PA, and a reconstruction filter after amplification to obtain the transmission signal. However, conventional digital Pulse-Width modulated signals contain a large amount of distortion that cannot be removed by the reconstruction filter in a satisfactory manner.
