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DC microgrids (MGs) have many potential advantages compared with AC microgrids, which have attracted more and more attention in recent years. However, DC bus voltage control of these systems can be an important issue undergoing the power surplus or deficit. An energy buffer in the DC MG powered by the bidirectional DC/DC converter with energy storage systems (ESS) such as super capacitor were investigated...
Conventional single-stage light-emitting diode (LED) drivers with a high power factor (PF) contain a significant LED current ripple at twice the ac line frequency, and would require large energy storage capacitors to limit the effect on LED light. Conventional designs and novel control techniques aim to power LED loads with a dc voltage to ensure a limited low-frequency LED current ripple. This paper...
This paper presents a novel current mode controller for the synchronous rectifier Buck (SR-Buck) converter. In term of the discrete equation, the required duty cycle can be calculated directly with two parallel terms: the current term and the voltage term. Based on the analysis of the proposed algorithm, the small signal model of the closed-loop system is derived, thus a proportional and integral...
Parallel current mode control algorithm for DC-DC converters is introduced in this paper. This control strategy is composed of two parallel terms: voltage term and current term which is calculated based on the input voltage, inductor current and output voltage. The new duty cycle algorithm requires only one multiplication, one division and three additions in digital implementation. The simulation...
In this paper, a novel control method is introduced which refers to the concept of parallel current-mode control algorithm to obtain good dynamic performance for Buck converter undergoing a rapid load change and input voltage change. The duty cycle consisting of two terms: voltage term and current term is simple for implementation. Since there are only three additions and two multiplications. Besides,...
In this paper, Parallel Current Mode Control method for Boost DC-DC converter is proposed. The parallel current mode control strategy is composed of two parallel terms: one is voltage term, the other is current term. They are calculated based on the input voltage, reference output voltage, inductor current and reference inductor current. The Parallel Current Mode Control method essentially distinguishes...
A double forward multiple output converter with weighted time-sharing control and switch-linear hybrid (WTSC-SLH) technique is presented in this paper. Total regulation of both output voltages is obtained by WTSC. Precise regulation and low ripple multiple output voltage can be achieved by a post regulator with SLH approach. The effects of WTSC-SLH is verified on an experimental two-output double...
A double forward multiple output converter with weighted time-sharing control and switch-linear hybrid (WTSC-SLH) technique is presented in this paper. Total regulation of both output voltages is obtained by WTSC. Precise regulation and low ripple multiple output voltage can be achieved by a post regulator with SLH approach. The effects of WTSC-SLH is verified on an experimental two-output double...
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