Patent
High power factor, voltage-doubler rectifier
Reads0
Chats0
TLDR
A voltage-doubler rectifier as mentioned in this paper includes an ac full-bridge diode rectifier and a dc-to-dc converter having two output boost circuits, one of which is coupled between the rectifiers and the dc link, and the other one is coupled, with opposite polarity, between the Rectifier and the circuit common.Abstract:
A voltage-doubler rectifier includes an ac fullbridge diode rectifier and a dc-to-dc converter having two output boost circuits. One of the output boost circuits is coupled between the rectifier and a dc link, and the other output boost circuit is coupled, with opposite polarity, between the rectifier and the circuit common. Two series-connected filter capacitors are also coupled between the dc link and the circuit common. In a preferred embodiment, the two output boost circuits each comprise either a series, parallel, or combination series/parallel resonant circuit and a rectifier. A switch is coupled between the junction joining one pair of diodes of the rectifier and the junction joining the two filter capacitors. For a relatively high ac line voltage, the switch is open, and the circuit operates in a low boost mode. For a relatively low ac line voltage, the switch is closed, and the circuit operates in a high boost, or voltage-doubling, mode.read more
Citations
More filters
Patent
Uninterruptible power supply with direction of DC electrical energy depending on predetermined ratio
Ira S. Faberman,Floyd Mills +1 more
TL;DR: In this paper, an uninterruptible power supply is disclosed in which the backup energy source is connected to the power supply of the protected computer by means of a bi-directional power converter.
Patent
High efficiency power converter
TL;DR: In this article, a power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier.
Patent
Transformerless 3 phase power inverter
TL;DR: In this paper, an improved transformerless 3-phase power inverter topology and control method for power distribution systems is presented, which provides the necessary output voltage and current waveform regulation, harmonic distortion rejection, very low output impedance, and ultra low DC offset of the output AC power, even when exposed to a high magnitude of the nonlinear, single phase, or unbalanced loading.
Patent
Power Converter With Capacitive Energy Transfer And Fast Dynamic Response
TL;DR: In this article, a reconfigurable switched capacitor transformation stage coupled to a magnetic converter (or regulation) is proposed for high power density power conversion, which can achieve high performance over a wide input voltage range or a wide output voltage range.
Patent
High power factor boost rectifier apparatus
TL;DR: In this paper, a power supply for providing a single level dc output voltage, with input power factor correction, from a wide range of ac input voltages commonly available worldwide, is presented.
References
More filters
Patent
AC/DC converter using resonant network for high input power factor
TL;DR: In this paper, an AC/DC converter is provided, suitable for use in an advanced single phase, sine wave voltage, high frequency power distribution system, such as that used on a 20 kHz Space Station Primary Electrical Power Distribution System.
Patent
Low/high input voltage power supply
TL;DR: In this article, a power supply switches between a voltage doubler and a full wave rectifier operation dependent on the level of the A.C. supply voltage, and a latch prevents the power supply from switching to the full-wave rectifier configuration.
Patent
Power circuit with high input power factor and a regulated output
TL;DR: In this paper, a single power converter is used to independently control the input current and the output current of an AC line and deliver DC or AC power to a load, and the power converter transformer has an output winding which is controlled by PWM and a frequency controlled boost winding for controlling input current.
Patent
Stabilized power supply with reduced ripple factor
TL;DR: In this article, the ripple factor in an electrical power supply of a dc-dc voltage raising type is reduced by using two double alternation dc/ac converters driven in phase quadrature with respect to each other.
Patent
Method and network for enhancing power factor of off-line switching circuit
TL;DR: In this paper, a parallel LC ringing circuit is introduced between the AC line and the rectifier of the switching type power supply to enhance the voltage enabling conduction of the rectifying diodes.