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2013•Hedianzixue yu tance jishuRequires access

An Improved SPWM Single-phase Sine Inverter Digital Realization of a Power Supply

Song Xiao-l

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Abstract

It presents a symmetric sampling method combined with natural sampling method to improve SPWM.The signals are output to PWM port of the DSP according to the carrier which the internal timer of the DSP generates.After the isolated and the driving circuit,the PWM signals are sent to H bridge which composed by IGBT,thereby the single-phase sine inverter power produced.Experiments show that the improved SPWM algorithm can satisfied with telescope's application,and the sine characteristic of the power is better than the traditional method.

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What this paper is about

It presents a symmetric sampling method combined with natural sampling method to improve SPWM.The signals are output to PWM port of the DSP according to the carrier which the internal timer of the DSP generates.After the isolated and the driving circuit,the PWM signals are sent to H bridge which composed by IGBT,thereby the single-phase sine inverter power produced.Experiments show that the improved SPWM algorithm can satisfied with telescope's application,and the sine characteristic of the power is better than the traditional method.

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Available abstract

It presents a symmetric sampling method combined with natural sampling method to improve SPWM.The signals are output to PWM port of the DSP according to the carrier which the internal timer of the DSP generates.After the isolated and the driving circuit,the PWM signals are sent to H bridge which composed by IGBT,thereby the single-phase sine inverter power produced.Experiments show that the improved SPWM algorithm can satisfied with telescope's application,and the sine characteristic of the power is better than the traditional method.

Key concepts: Pulse-width modulation, Timer, Inverter, Insulated-gate bipolar transistor, Digital signal processing, Realization (probability), Power (physics), Electronic engineering

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