Average small-signal analysis of boost power factor correction circuit
01 Jan 1989-pp 108-120
About: The article was published on 1989-01-01 and is currently open access. It has received 114 citations till now. The article focuses on the topics: Power factor.
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22 Jun 1997
TL;DR: In this article, the authors present the practical implementation of a fully digital control for boost power factor preregulators (PFPs), which is simple and fast and provides a significant improvement in the system's dynamic performance compared to the usual analog control techniques.
Abstract: This paper presents the practical implementation of a fully digital control for boost power factor preregulators (PFPs). The control algorithm, which is simple and fast, provides a significant improvement in the system's dynamic performance compared to the usual analog control techniques. The paper discusses the design criteria and the actions taken for the implementation of the digital control, which is performed by means of a standard microcontroller (Siemens 80C166). The effectiveness of the approach is assessed by experimental tests.
246 citations
TL;DR: In this article, a two-stage topology using a full bridge in series with a bidirectional synchronous rectifier dc-dc converter as a single-phase ECC for dc nanogrid was investigated.
Abstract: With the emerging installations of multitype renewable energy sources and energy storage elements, the dc electronic distribution systems in residential buildings (dc nanogrid) are becoming an alternative future system solution, achieving a zero net-energy consumption and optimized power management. The concept of the energy control center (ECC), which interconnects the dc system to the traditional ac utility grid, is introduced, and the operation function of ECC converter suitable for dc nanogrid application is defined. This paper investigates a two-stage topology using a full bridge in series with a bidirectional synchronous rectifier dc–dc converter as a single-phase ECC for dc nanogrid, with a significant reduction of the dc-link capacitor value. The operation analysis and the design of passive components are provided. A bidirectional control system and the design process are also presented in terms of the system requirement and the small dc-link capacitor.
245 citations
Cites background from "Average small-signal analysis of bo..."
...Then, the current-to-dc-link-voltage small-signal model in the low-frequency range is obtained in (28) [32], [34]....
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01 Jan 1994
TL;DR: The aspects regarding control strategies for Power Factor Correction (PFC) converters are investigated and some experimental results for a PFC based on the Sepic topology are reported, which allow comparison of converter performance with different control techniques.
Abstract: The aspects regarding control strategies for Power Factor Correction (PFC) converters are investigated. The major control techniques to absorb sinusoidal input currents in boost PFC's are reviewed and analyzed. Their extension to other converter topologies is discussed and some experimental results for a PFC based on the Sepic topology are reported, which allow comparison of converter performance with different control techniques. Lastly, some considerations regarding dynamic operation are given, together with information about control IC's specifically developed for PFC applications.
206 citations
TL;DR: Two kinds of nonlinear phenomena are detected under the conditions that are considered to be stable by the prior criteria: one is period-doubling bifurcation and the other is chaos.
Abstract: The boost power-factor-correction (PFC) converter with average-current-mode control is a nonlinear system due to the effects of the multiplier and a large variation of the duty ratio. Although its stability analysis must be studied depending on a nonlinear model, most prior research attempted to make some assumptions to force this nonlinear system to be linear. As a result, the practical dynamics and the nonlinear phenomena were disregarded. In this paper, two kinds of nonlinear phenomena are detected under the conditions that are considered to be stable by the prior criteria: one is period-doubling bifurcation and the other is chaos. Stability maps and phase-plane trajectories are introduced at different loads to clarify the power factor and also the instability regions. It is clear that the output storage capacitor is a main contributing parameter on the system stability, therefore, bifurcation maps are developed to determine the accurate minimum output capacitance value that assures the system stability under all operating conditions. Also, PFC converter stability is explained and judged by comparing the consequence of charging and discharging energy in the output capacitor.
124 citations
Cites background from "Average small-signal analysis of bo..."
...With all these assumptions, they derived the linear system ignoring the effect of nonlinearity, introduced a small-signal equivalent circuit, and discussed the stability problem depending on these linear treatments [4], [5]....
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TL;DR: In this article, a new method for stability analysis and design of fast voltage-loop compensators in rectifiers with power factor correction (PFC) is introduced, which can be used with various implementations of the fast voltage loop.
Abstract: This paper introduces a new method for stability analysis and design of fast voltage-loop compensators in rectifiers with power factor correction (PFC). The method has few constraints and can be used with various implementations of the fast voltage loop. It is based on utilization of circle criterion, which unifies frequency domain and nonlinear system analysis. A step-by-step procedure of stability assessment and compensator design is described and demonstrated on two controller implementations. In the first system, the voltage-loop dynamic response of an experimental 200-W digitally-controlled boost-based PFC is improved with a self-tuning comb filter. In the second implementation, it is shown how the circle criterion can be used to design a fast voltage loop for controllers with regulation band, i.e., ldquodead-zone,rdquo element for ripple elimination.
116 citations