By Nicolas Patin
A few strength digital converters are particularly designed to energy gear below a smoothed DC voltage. for that reason, the filtering half inevitably includes using auxiliary passive parts (inductors and capacitors). This publication bargains with technical points comparable to classical separation among remoted and non-isolated strength provides, and delicate switching via a distinct converter. It addresses the matter of regulating the output voltage of the switching strength offers when it comes to modeling and acquiring move of SMPS functions.
Power Electronics for and shipping, quantity 3, deals a case examine of an remoted flyback strength which the total layout is gifted: the lively and passive parts are sized in response to the requirements before everything set. specific cognizance is given to the converter output capacitors and the entire surrounding organs.
- Introducing crucial notions in energy electronics from either the theoretical and technological perspectives
- Detailed chapters with a spotlight on switch-mode energy offers, one other key sector within which strength electronics is used is within the provide of strength to various digital gear for sign and knowledge processing
- Presented from a clients standpoint to assist you follow the idea of energy electronics to functional applications
Read or Download Power Electronics Applied to Industrial Systems and Transports, Volume 3: Switching Power Supplies PDF
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Additional info for Power Electronics Applied to Industrial Systems and Transports, Volume 3: Switching Power Supplies
Example text
The skin effect in conductors and iron losses in magnetic circuits are intrinsically linked to their operating frequency. There is a limit (always of a thermal nature) to acceptable increases in the switching frequency (which is no longer systematically imposed by the switches). 2 Note the analogies between electrical currents and mechanical speed and between voltage and force. Using this analogy, an inductance is equivalent to a mass (or inertia), while a capacitor is equivalent to a spring. 1.
Continuous conduction modeling This section is devoted to non-isolated converters, examining the case of the buck, boost and buck–boost converters; this approach is easily applied to the corresponding isolated converters (except for the boost, where no isolated version exists). 2] where x ˜(t) is the fluctuating component (with an average value of zero) of x(t). For reasons of simplicity, x (for the average value of x(t)) will be replaced by x0 . Generally speaking, the following sections will only consider the converters using small signals, and therefore concern only the fluctuating components.
For a given loss budget (linked to the heat sink equipment), the smaller the switching losses are, the 42 Power Electronics Applied to Industrial Systems and Transports 3 higher the switching frequency can be, allowing miniaturization of the passive components in the converter1. 2. Resonance Resonance is an interesting way of introducing current and voltage ripples so that they pass through zero at precise instants, while avoiding energy dissipation. Based on this principle, “inductance/capacitor”-type assemblies are particularly useful for soft switching in power electronic converters2.