The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Lists the Year, Site Dates, General Chair, and Program Chairs of the IEEE Applied Power Electronics Conference and Exposition (APEC) for the years 1986-2016.
Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
This paper presents a current sensorless control for dual-boost full-bridge (DBFB) converter with power factor correction (PFC) function. In this topology, the short-through problem can be avoided, and the freewheeling current flows through the independent diode rather than the body diodes of switches. Therefore, the reliability and availability can be improved. The proposed current sensorless control...
This paper presents a novel control methodology that enables DCM/CCM Boundary PFC Boost converter operating in voltage mode to draw ideally a sinusoidal current from the power line also when techniques that maximize system efficiency especially at medium-light load are implemented (e.g. “valley skipping” operation to limit the converter switching frequency). It is a well-known fact that in these systems...
A modified asymmetrical half-bridge flyback converter (AHBFC) to fulfill the single-stage buck-type AC-DC adaptor for notebook application is proposed in this paper. The modified AHBFC is obtained from the integration of a buck converter and a conventional AHBFC. The modified AHBFC is operated in the discontinuous conduction mode to achieve the high input power factor to meet the required regulations...
This paper proposes a 1-MHz single stage LLC converter with improved hybrid full bridge / voltage doubler rectifier for laptop power adapter. Using single stage LLC instead of the two stage configuration is expected to reduce both the size and loss of the existing commercial products. For universal AC input, the hybrid full bridge / voltage doubler rectifier is desired. At 220 V AC input condition,...
Existing literature claims that the nine-switch converter has lower losses as compared to the twelve-switch back-to-back (BTB) converter in AC-DC Different Frequency (AC-DC DF) mode only if the upper and the lower terminals of the converter are connected to an AC source and a DC source respectively. This paper shows that this is not true if the upper terminal is connected to a DC load and the lower...
This work analyzes different options to implement low power consumption in Switching Mode Power Supplies (SMPSs) with Power Factor Correction (PFC) when they are in standby mode. The standard SMPSs for power levels higher than 100 W are made up of two stages: a classical PFC stage based on a Boost Converter operating in the Continuous Conduction Mode and a second stage based on any type of isolated...
Single-phase pulse width modulation H-bridge active capacitors have second-order harmonic ripple voltages on the DC bus. The second-order harmonic power is usually filtered by a bulk capacitor on the DC bus to maintain a constant dc-bus voltage, which results in low power density. However, in applications like active capacitors, a larger DC bus voltage fluctuation is acceptable since the DC bus connects...
The paper presents a new digital control scheme for Active Virtual Ground-Bridgeless PFC (AVG-BPFC) in electric vehicle wireless charging application which is able to suppress the common-mode (CM) voltage induced from the conventional BPFC, where the best optimized solution between the system efficiency and Electromagnetic Interference (EMI) performance in the PFC state can be obtained. However, a...
The current source rectifier is a buck type rectifier, and it has advantages such as output voltage variation in wide range, high power density, unity power factor and suitable for variable frequency applications. However, most of them operate in continuous conduction mode where the output current is assumed to be a DC value. When the output inductor is small and/or the converter is operating in light...
This work presents a 1.3 kW, single phase, AC-DC converter with power factor correction based on a 7-level flying capacitor multilevel converter. The topology features a tradeoff of active circuit complexity for dramatic reduction on the magnetic component size, while maintaining a high efficiency. In this work, we demonstrate these features through theoretical analysis as well as a hardware prototype...
The number of power supplies connected to the public household power grid is constantly increasing. For a good mains voltage quality, the harmonic input currents are limited in standards. Many applications also require a lower output voltage with isolation. Today, this is mostly obtained via a multi-stage converter, consisting of a diode bridge rectifier, a boost PFC and a DC-DC converter with galvanic...
This paper presents a control architecture that substantially reduces current distortion in bridgeless boost power factor correction (PFC) rectifiers. In the proposed control architecture, the ac line voltage is sensed and the current reference is generated without rectification. This relieves the controller from having to deal with discontinuities around zero-crossing transitions, which eases requirements...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.