Conservation

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

By Euzeli dos Santos, Edison R. da Silva

This e-book covers energy electronics, intensive, by way of providing the fundamental ideas and alertness info, which might be used either as a textbook and reference book.

• Introduces a brand new approach to current energy electronics converters referred to as energy Blocks Geometry (PBG)
• Applicable for classes targeting energy electronics, energy electronics converters, and complex energy converters
• Offers a finished set of simulation effects to assist comprehend the circuits awarded through the book

 

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

Sample text

15(a), also known as leg when it is arranged as presented in Fig. 15(b), can be used to connect a voltage source to an inductive load. In Fig. 15(c), the source is connected between points M and N while the load is connected to the point A, named as pole. Instead, in Cell II in Fig. 16(a), or its leg representation [Fig. 16(b)], the current source connected to point A allows feeding a capacitive load connected between points M and N (voltage-type load), as shown in Fig. 16(c). It should be noticed that while one of the switches is conducting, the other one is turned off.

When both 30 CHAPTER 2 POWER SWITCHES AND OVERVIEW OF BASIC POWER CONVERTERS switches are turned off their current will be zero. In terms of the voltage applied to those devices, it is also UniV, as the voltage will be either zero or Vdc for Q and either zero or −Vdc for D. 19(e) shows the diode voltage, which is the voltage applied to the LC filter. While the time domain representation—as in Fig. 19(e)—provides a good understanding of the topology itself, the frequency domain with the Fourier series allows identification of the frequency components.

21 are presented in the sequence. 21 – + (a) 33 Vdc + + – Vo – (d) Four basic dc–dc converters: (a) buck-boost, (b) cuk, (c) zeta, and (d) SEPIC. (i) Buck-Boost Converter. This converter is shown in Fig. 21(a) and can connect a voltage source to a voltage type load. The characteristics of the buck-boost converter are the following: 1. Both input current and the current iD are discontinuous. 2. The output voltage is negative. (ii) Cuk Converter. This converter is shown in Fig. 21(b) and can connect a current source to a current-type load.

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