In this paper, a new step-up/step-down AC-AC converter is designed by switched capacitor (SC) techniques. The main features of the proposed SC AC-AC converter are the symmetrical converter topology and the absence of magnetic elements.
Customer ServiceDOI: 10.1016/j.egyr.2019.11.059 Corpus ID: 215909348; A step-down nesting-type ac–ac converter combined with voltage equalizers and switched-capacitor simple converters @article{Eguchi2020ASN, title={A step-down nesting-type ac–ac converter combined with voltage equalizers and switched-capacitor simple converters}, author={Kei Eguchi and Ratanaubol
Customer ServiceDESIGN OF HIGH EFFICIENCY STEP-DOWN SWITCHED CAPACITOR DC/DC CONVERTER 1. INTRODUCTION 1.1. Background A DC/DC converter is a device that accepts a DC input voltage and produces a DC output voltage. Typically, the output produced is at a different voltage level than input. Portable electronic devices, such as cell phones, PDAs, pagers and laptops,
Customer ServiceDue to the continuous growth of power consumption in the data center, the DC bus voltage in the power supply architecture will be increased to 48V, which puts forward new requirements for the design of step-down converter for the data center. Compared with inductor based power converters, switched capacitor converters have higher power density and switch utilization.
Customer ServiceThis work introduces an inductorless switched capacitor (SC) AC-AC converter capable of operating in either step-down or step-up mode, offering distinct voltage gains depending on how the source and load are connected to the circuit. A simple drive circuit can be used to generate three clock signals shifted by 120° for the active
Customer ServiceThis paper proposes a new ac-ac static power converter based on the switched-capacitor (SC)
Customer ServiceIn this paper, a new step-up/step-down AC-AC converter is designed by switched capacitor (SC) techniques. The main features of the proposed SC AC-AC converter are the symmetrical converter topology and the absence of magnetic elements. Owing to the symmetrical converter topology, the number of capacitors in the proposed AC-AC converter is fewer than that in the
Customer ServiceIn this paper, we present an inductor-less direct ac–ac converter with improved
Customer ServiceThis paper treats a new type of high power switched-capacitor-DC-DC-converter (SCDDC), which is characterized by resonant switching transitions. This drastically reduces switching losses and opens up the possibility to employ thyristors instead of turn-off power semiconductors. At the same time a larger energy can be transferred per switching cycle
Customer ServiceAt the rated power, an efficiency of 95.1% for step-up and step-down modes,
Customer ServiceThis work introduces an inductorless switched capacitor (SC) AC-AC
Customer ServiceTo realize a small inductor-less AC-AC converter, this paper presents a cascade direct AC-AC converter using switched-capacitor (SC) techniques. The proposed AC-AC converter has cascade topology, where converter blocks with the
Customer ServiceIn this paper, a new step-up/step-down AC-AC converter is designed by switched capacitor
Customer ServiceThis work introduces a patent-pending inductorless switched capacitor (SC)
Customer ServiceThis paper proposes a new ac-ac static power converter based on the switched-capacitor (SC) principle, intended to replace the conventional autotransformer in commercial and residential applications. The principle of operation, a qualitative and quantitative analysis, the design methodology, and an example are described in this paper. The main
Customer ServiceThis work introduces a patent-pending inductorless switched capacitor (SC) ac-ac converter capable of operating in either step-down or step-up mode, offering distinct voltage gains depending on how the source and load are connected to the circuit. A simple drive circuit can be used to generate three clock signals shifted by 120° for the active
Customer ServiceAt the rated power, an efficiency of 95.1% for step-up and step-down modes, capacitive power factor of 0.94, and output voltage regulation of 96% were obtained. A direct three-phase ac-ac converter based on the switched-capacitor principle and ladder structure is presented in this paper.
Customer ServiceAbstract—This paper presents a switched-capacitor rectifier that provides step down voltage
Customer ServiceEven for a step-down regulator with fixed output voltage, in the event of failure of regulation the output voltage may rise to the input voltage. Consequently, to avoid catastrophic failure of the output capacitor it should be rated to withstand the input voltage. For example, for V in up to 27V you we use a capacitor rating of 35 V. You must
Customer ServiceThis work introduces a patent-pending inductorless switched capacitor (SC) ac-ac converter capable of operating in either step-down or step-up mode, offering distinct voltage gains depending on how
Customer ServiceDOI: 10.1016/j.mejo.2018.06.003 Corpus ID: 51934243; A dual mode step-down switched-capacitor DC-DC converter with adaptive switch width modulation @article{Liu2018ADM, title={A dual mode step-down switched-capacitor DC-DC converter with adaptive switch width modulation}, author={Lianxi Liu and Hao Chen and Tianyuan Hua and Junchao Mu and
Customer ServiceIn this paper, we present an inductor-less direct ac–ac converter with improved nesting-type topology. Unlike existing direct ac–ac converters, the proposed ac–ac converter combines a voltage equalizer and a switched-capacitor (SC) simple converter.
Customer ServiceThis work introduces a patent-pending inductorless switched capacitor (SC) ac-ac converter capable of operating in either step-down or step-up mode, offering distinct voltage gains depending on how the source and load are connected to the circuit. A simple drive
Customer ServiceStep-by-Step Guide to Installing a New AC Capacitor 1. Accessing and Inspecting the Old Capacitor. First, locate the capacitor by removing the side panel of your outside unit. The capacitor is usually a cylindrical or rectangular component with three terminals labeled C (common), HERM (hermetic), and FAN. Inspect the capacitor for any signs of
Customer ServiceTo realize a small inductor-less AC-AC converter, this paper presents a cascade direct AC-AC converter using switched-capacitor (SC) techniques. The proposed AC-AC converter has cascade topology, where converter blocks with the conversion ratio of 1/2 or 2 are connected in series.
Customer ServiceIn this paper, we present an inductor-less direct ac–ac converter with improved nesting-type
Customer ServiceThis article, together with the preceding one, covered capacitor selection for step-down switching regulators; the two articles before that dealt with choosing an inductor. While I plan to explore other switch-mode converter
Customer ServiceThe basic circuit of the capacitor step-down simple power supply is shown in Figure 1. C1 is a step-down capacitor, D2 is a half-wave rectifier diode, D1 provides a discharge circuit for C1 during the negative half cycle of the mains, D3 is a voltage regulator diode, and R1 is the charge discharge resistor of C1 after the power supply is turned
Customer ServiceAbstract—This paper presents a switched-capacitor rectifier that provides step down voltage conversion from an ac input voltage to a dc output. Coupled with current-drive source, low-loss and high step-down rectification is realized. Implementation in CMOS with appropriate controls results in a design suitable for
Customer ServiceIn this paper, we present an inductor-less direct ac–ac converter with improved nesting-type topology. Unlike existing direct ac–ac converters, the proposed ac–ac converter combines a voltage equalizer using a flying capacitor and an SC simple converter. Therefore, small size and high input power factor can be achieved by
Customer ServiceTherefore, the capacitor step-down is actually the use of capacitive reactance to limit current. The capacitor actually plays a role in limiting the current and dynamically distributing the voltage across the capacitor and the load. Pay attention to the following points when using capacitors to step down:
Pay attention to the following points when using capacitors to step down: 1 Select the appropriate capacitor according to the current size of the load and the working frequency of the alternating current, rather than the voltage and power of the load.
Reduced Switch Count Step-Up/Step-Down Switched-Capacitor Three-Phase AC–AC Converter Abstract:A direct three-phase ac-ac converter based on the switched-capacitor principle and ladder structure is presented in this paper. Additionally, the boundary between partial charge and no charge modes of a switched-capacitor operation is defined.
All switched-capacitor direct ac-ac converters described in the literature employ four-quadrant switches; however, the proposed structure works with two-quadrant switches. This characteristic is the main advantage of the proposed structure because it reduces the number of MOSFETs employed in the power circuit, increasing the converter reliability.
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