Comparative analysis of third harmonic injection PWM and SPWM control techniques for UPS inverter
- Authors: Wanjekeche, T. , Nicolae, Dan-Valentin , Jimoh, A. A.
- Date: 2008
- Subjects: Uninterruptible power supply , Pulse width modulation
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/20338 , uj:16086 , Citation: Wanjekeche, T., Nicolae, D. V. & Jimoh, A. A. 2008. Comparative analysis of third harmonic injection PWM and SPWM control techniques for UPS inverter. Proceedings of The IASTED International Conference on Power and Energy Systems, 8-10 September 2008, Gaborone, Botswana.
- Description: Abstract Pulse Width Modulation (PWM) techniques has been researched for three decades but there are no explicit guidelines on how one can choose the desired technique for particular application especially in power processing devices. Thus choosing a particular PWM technique for UPS application remains a challenging task since UPS operate under varying load conditions. All the techniques appear to give superior performance as well as short-comings when it comes to control of UPS inverter. This paper presents analytical and simulated results that demonstrate the equivalence between the two types of PWM control techniques and the superior performance when considering high conversion factor (C.F.) and Total Harmonic Distortion (THD) for UPS application.
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Detecting the zero-crossing message to achieve low bit transmission over H-bridge inverter
- Authors: Ndjiongue, A. R. , Han Vinck, A. J. , Ouahada, K. , Ferreira, Hendrik C. , Snyders, A. J.
- Date: 2014
- Subjects: Power line communications , Pulse width modulation
- Type: Article
- Identifier: uj:4753 , http://hdl.handle.net/10210/11739
- Description: Home automation and smart grid development is motivated by many advantageous situations that include the demands on renewable energy and the advantages provided by power line communications technology (PLC). The integration of solar energy into conventional grid implies the control of different modules included in the system. Remote control seems to be the control mode by excellence, in which communication is the main point to focus on. The pulse width modulation (PWM) scheme used to control the inverter is also used to modulate the zero-crossing point of the output sine wave of the inverter, to transfer data. The zero-crossing modulation technique is proposed and basic elements to construct the model are proposed. Simulated constellations of the received signal are presented.
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