Download Advanced Power Electronics Converters: PWM Converters by Euzeli dos Santos, Edison R. da Silva PDF

By Euzeli dos Santos, Edison R. da Silva

This ebook covers energy electronics, intensive, via featuring the elemental ideas and alertness information, which are used either as a textbook and reference book.

• Introduces a brand new way to current energy electronics converters known as strength Blocks Geometry (PBG)
• Applicable for classes concentrating on energy electronics, strength electronics converters, and complicated energy converters
• Offers a complete set of simulation effects to assist comprehend the circuits offered through the book

 

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Additional info for Advanced Power Electronics Converters: PWM Converters Processing AC Voltages

Example text

Only sources and loads of different types can be directly connected, that is: (i) a voltage source can be directly connected to a current-type load and (ii) a current source can be directly connected to a voltage-type load. Such a restriction comes from the need to avoid, for example, a parallel connection between two voltage-type elements, and so preventing short-circuit between these two elements. Except for the case of resistive load, the minimal number of switches that allows interconnecting a source and a load is two, which is called basic commutation cell.

28. As the line-to-line voltage in Fig. 28(b) was obtained with ???? = 120∘ , then neither third harmonic nor its multiples are measured in these voltages. This is an important characteristic for three-phase systems, as the natural phase angle displacement among the phases (120∘ ) allows elimination of harmonics. It can be seen from Fig. 28 that there are six modes of operation. These modes are highlighted in Fig. 29(f). In addition to these six modes of operation, there are two other modes of operation that apply zero voltage to the loads.

Depending of the application, it is possible to define two scenarios: (i) one load supplied by one or more sources and (ii) one source supplying one or more loads. Consider first the case in which there is only one load supplied from one or more sources. Each source can be connected to either a switch (corresponding to the point M in Fig. 15, for example), as shown in Fig. , point A), as shown in Fig. 18(f). Similarly, for the second scenario, when there is only one source and the load is constituted by one or more elements, each part of the load can be connected to either a switch (point M, for example), as shown in Fig.

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