Pwm Ac Choppers: Basic Topologies and Applications
نویسنده
چکیده
In această lucrare sunt prezentate principiile de funcţionare pentru câteva structuri elementare de choppere de tensiune alternativă. Datorită avantajelor lor, acestea pot fi utilizate într-un număr mare de aplicaţii industriale. Sunt prezentate două tipuri de aplicaţii. Prima aplicaţie o reprezintă stabilizatoarele moderne de tensiune obţinute prin asocierea structurilor elementare cu transformatoare serie. Sunt prezentate compensatoare de tip coborâtor, ridicător, precum si cele de tip coborâtor-ridicător. A doua aplicaţie propune un cicloconvertor nou obţinut prin cascadarea chopperelor de tensiune alternativă elementare. Acesta este comandat pe principiul DPWM şi nu prezintă probleme de comutaţie.
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