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Switched-mode power supply

About: Switched-mode power supply is a research topic. Over the lifetime, 44760 publications have been published within this topic receiving 547258 citations. The topic is also known as: switching-mode power supply & SMPS.


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Patent
16 Oct 2008
TL;DR: In this article, a power supply system of a vehicle is equipped with inverters 14 and 22 which are supplied with electric power from batteries BA, BB1 and BB2, and a connecting section 39B for connecting either one of the batteries BB 1 and BB 2 selectively to the inverters so as to supply electric power to them.
Abstract: PROBLEM TO BE SOLVED: To provide a power supply system of a vehicle, which can reduce a decline in power performance of a vehicle when it uses a plurality of power supplies in a switching manner or can prevent an excessive current flow when switching the power supplies. SOLUTION: A power supply system of a vehicle is equipped with inverters 14 and 22 which are supplied with electric power from batteries BA, BB1 and BB2; a connecting section 39B for connecting either one of the batteries BB1 and BB2 selectively to the inverters 14 and 22 so as to supply electric power to them; an air conditioner 40 which is supplied with electric power from the battery BA. When the battery (BB1 or BB2) to be selected is changed, a controller 30 stops the operation of the air conditioner 40 temporarily until the change in the connecting section 39B is completed. COPYRIGHT: (C)2010,JPO&INPIT

622 citations

Journal ArticleDOI
TL;DR: In this article, an impedance-based analytical approach is employed and expanded to a meshed and balanced three-phase network which is dominated by multiple current and voltage-controlled inverters with LCL-and LC-filters.
Abstract: This paper addresses the harmonic stability caused by the interactions among the wideband control of power converters and passive components in an ac power-electronics-based power system. The impedance-based analytical approach is employed and expanded to a meshed and balanced three-phase network which is dominated by multiple current- and voltage-controlled inverters with LCL- and LC-filters. A method of deriving the impedance ratios for the different inverters is proposed by means of the nodal admittance matrix. Thus, the contribution of each inverter to the harmonic stability of the power system can be readily predicted through Nyquist diagrams. Time-domain simulations and experimental tests on a three-inverter-based power system are presented. The results validate the effectiveness of the theoretical approach.

616 citations

Journal ArticleDOI
12 Oct 1998
TL;DR: In this article, the double-layer capacitor (DLC) for power applications is presented, and an equivalent circuit model consisting of three RC branches, one of them with a voltage-dependent capacitance is presented.
Abstract: The double-layer capacitor (DLC) for power applications is a new device. A simple resistive capacitive equivalent circuit is insufficient to characterize its terminal behavior. Based on physical reasoning, an equivalent circuit is proposed to provide the power electronics engineer with a model for the terminal behavior of the DLC. The equivalent circuit model consists of three RC branches, one of them with a voltage-dependent capacitance. A method to identify the circuit parameters is presented. Measurements of carbon-based DLC's for power applications are presented, analyzed, and the equivalent circuit response is compared with experimental results.

615 citations

01 Jan 1990
TL;DR: Average current mode control may be used effectively to control currents other than inductor current, allowing a much broader range of topological application.
Abstract: Current mode control as usually implemented in switching power supplies actually senses and controls peak inductor current. This gives rise to many serious problems, including poor noise immunity, a need for slope compensation, and peak-to-average current errors which the inherently low current loop gain cannot correct. Average current mode control eliminates these problems and may be used effectively to control currents other than inductor current, allowing a much broader range of topological application.

611 citations

Journal ArticleDOI
TL;DR: This review paper is the first of its kind with the aim of providing a “one-stop” information source and a selection guide on impedance-source networks for power conversion for researchers, designers, and application engineers.
Abstract: Impedance networks cover the entire of electric power conversion from dc (converter, rectifier), ac (inverter), to phase and frequency conversion (ac-ac) in a wide range of applications. Various converter topologies have been reported in the literature to overcome the limitations and problems of the traditional voltage source, current source as well as various classical buck-boost, unidirectional, and bidirectional converter topologies. Proper implementation of the impedance-source network with appropriate switching configurations and topologies reduces the number of power conversion stages in the system power chain, which may improve the reliability and performance of the power system. The first part of this paper provides a comprehensive review of the various impedance-source-networks-based power converters and discusses the main topologies from an application point of view. This review paper is the first of its kind with the aim of providing a “one-stop” information source and a selection guide on impedance-source networks for power conversion for researchers, designers, and application engineers. A comprehensive review of various modeling, control, and modulation techniques for the impedance-source converters/inverters will be presented in Part II.

601 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202363
2022182
2021126
2020503
2019673
2018850