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A n-stage cascaded boost converter connected with a single active switch is usually used in applications with high conversion ratio. It has been reported that the dynamic of the transfer function output-voltage-to-duty cycle related with the first inductor is minimum phase and the second, third or n inductor current has right-hand side (RHS) zeros; as a result, it is obtained and increment of complexity...
This paper presents a new power regulation method for contactless power transfer systems that combines current magnitude control of a series tuned resonant converter with energy injection concepts suitable for constant load or single pick-up applications. In the latter, the control of the primary converter operates with asymmetrical control, to regulate the magnitude of the high frequency primary...
A 100 MHz switching power supply with two-loop control is proposed for radio frequency power amplifiers. The power supply has a tracking bandwidth of 5 MHz and an estimated efficiency of 80%. The two-loop topology consists of a buck converter with an inner loop for one-cycle control and an outer loop that contains a PI compensator. With the two loops a stable feedback control is obtained with an excellent...
This paper deals with a new control method for power factor correctors based on flybackpsilas family converters (e.g., Buck-Boost, Flyback, SEPIC, Cuk and Zeta). The control is carried out by a standard IC controller for peak current-mode dc-dc converters, with only an exponential compensation ramp and a peak detector or low pass filter. Neither analog multiplier nor input voltage sensor are needed...
New nonlinear current control methods are developed for single-phase power factor corrected (PFC) AC-DC converters. The control methods combine input current feedforward with partial feedback control based on the switch current to achieve sinusoidal input current and unity input power factor. The nonlinear control methods don't suffer from the limitations of conventional linear (average) current control...
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