Power Converters with Digital Filter Feedback Control by Keng C. Wu

By Keng C. Wu

Power Converter with electronic clear out suggestions Control offers a logical series that ends up in the id, extraction, formula, conversion, and implementation for the regulate functionality wanted in electricity gear systems.

This ebook builds a bridge for relocating an influence converter with traditional analog suggestions to at least one with glossy electronic clear out keep an eye on and enlists the nation house averaging strategy to determine the middle regulate functionality in analytical, shut shape in s-domain (Laplace). it's a necessary reference for all execs and electric engineers engaged in electricity equipment/systems layout, integration, and management.

  • Offers logical sequences to identity, extraction, formula, conversion, and implementation for the keep an eye on functionality needed
  • Contains step by step directions on easy methods to take latest analog designed strength processors and stream them to the electronic realm
  • Presents how you can extract achieve capabilities for lots of strength converters’ strength processing phases and their assisting circuitry

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Example text

1 and Chapter 1, directly enlist PWM comparator output as switch control. It shall also be note that slow start is implemented. 1 shall be observed: R1a = R30, C2a = C16, C1a = C15, R2a = R28, R3a = R29, and C3a = C3.

The latter is simpler and cheaper, but it is less efficient. As shown, there is basically no change in the power train. 2. However, a huge difference for the PWM gain does exist between the two modes of control. With voltage-mode control, the PWM gain Fm is quite simple. In the case of peak current-mode control, the simplicity vanishes. Briefly, the outer voltage loop generates a voltage error, Ve. When the switch-peak current signal intercepts the voltage loop error signal, it terminates the switch-on state by resetting the reset–set (RS) flip-flop.

Intermediate variable w is also introduced after the transformer reset current. 34) Forward Converter with Voltage-Mode Control 29 In contrast to the analog version, simulation of the digital version is running at exactly the sampling rate, 2 MHz, which is the base for selecting the bilinear transform scaling constant, C. 19). 19 (a) Input current, (b) switch, or primary winding, current, (c) D2 cathode voltage, (d) D1 current, (e) D2 current, (f ) output inductor current, (g) output voltage, (h) digital filter output, and (i) transformer magnetizing and reset current.

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