Method of suppressing noise of inverter

Method of suppressing noise of inverter

A method of suppressing noise of inverter, wherein two pulse-width modulation signals are respectively inputted to the upper and lower arm logic transistors of the inverter in an interlaced manner every half cycle. Amplitude of each pulse-width modulation signal at N phase angles in a single cycle i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YE, JINUN, ZHUANG, FU-XIANG, LIN, ZONG-HAN, XUE, YONG-LONG, ZHENG, JIAN-LONG, CHEN, XI-QING
Format: Patent
Sprache:chi ; eng
Schlagworte:
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:A method of suppressing noise of inverter, wherein two pulse-width modulation signals are respectively inputted to the upper and lower arm logic transistors of the inverter in an interlaced manner every half cycle. Amplitude of each pulse-width modulation signal at N phase angles in a single cycle is zero. These phase angles are symmetrized with pairs at an opposite phase direction by taking (pi) / 2 as the center. Accordingly, multiple odd harmonics starting from the lower harmonics in the output waveform of the inverter can be eliminated such that audio frequency noise is not generated while operating the inverter.