http://www.freshpatents.com/Electric-power-conversion-systems-dtnewntc363.php USPTO Class 363 - Electric power conversion systems en-us Mon, 20 May 2013 13:38:32 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/-dt20130516ptan20130121029.php Mon, 20 May 2013 13:38:32 -0700 The invention relates to a process of connecting an AC output of a transformerless inverter of a solar power plant to an internal AC power grid at an input side of a galvanic isolation, while an offset voltage for shifting a potential center point of a photovoltaic generator connected to... http://www.freshpatents.com/-dt20130516ptan20130121030.php Mon, 20 May 2013 13:38:32 -0700 A switching and control arrangement are provided along with a transformer arrangement such that semiconductor-based switches can be used in a medium DC voltage to AC inverter in a medium voltage to low voltage DC to DC converter. The switching arrangement on the secondary side of the transformer arrangement controls... http://www.freshpatents.com/-dt20130516ptan20130121031.php Mon, 20 May 2013 13:38:32 -0700 The disclosed embodiments provide a system that facilitates the use of a portable electronic device. During operation, the system detects a coupling of a power supply to the portable electronic device through a set of wires. Next, the system uses the set of wires to identify a type of the... http://www.freshpatents.com/-dt20130516ptan20130121032.php Mon, 20 May 2013 13:38:32 -0700 A controller of a switching power converter employs a dynamically adaptive power supply regulation approach that improves low-load and no-load regulation to achieve ultra-low standby power in a switching power converter. Under ultra-low load conditions when a deep-deep pulse width modulation (DDPWM) is applied, the controller decreases the actual on-time... http://www.freshpatents.com/-dt20130516ptan20130121034.php Mon, 20 May 2013 13:38:32 -0700 A DC-DC converter is configured with a voltage-source power converter at a primary side of a transformer, a current-source power converter at a secondary side of the transformer, and a controller. First and second voltage detection circuits respectively detect first and second voltages of the voltage-source and the current-source power... http://www.freshpatents.com/-dt20130516ptan20130121033.php Mon, 20 May 2013 13:38:32 -0700 The present invention provides a series of DC-DC converter circuit designs, and DC-DC converters based on such circuit design, that provide high input-to-output voltage conversion. The converters include a resonant tank and a means for interrupting the tank current to produce a near zero-loss “hold” state wherein zero current and/or... http://www.freshpatents.com/-dt20130516ptan20130121035.php Mon, 20 May 2013 13:38:32 -0700 A power converter includes a dc input having first and second terminals. A main converter is coupled to the first terminal of the dc input. A standby circuit coupled to the second terminal of the dc input and the main converter. The main converter is coupled to control a transfer... http://www.freshpatents.com/-dt20130516ptan20130121036.php Mon, 20 May 2013 13:38:32 -0700 The resonant converting circuit comprises a resonant circuit, a current detecting circuit and the resonant controller. The resonant controller controls a power conversion of the resonant circuit for converting an input voltage into an output voltage and the resonant controller comprises an over current judgment unit and an over current... http://www.freshpatents.com/-dt20130516ptan20130121037.php Mon, 20 May 2013 13:38:32 -0700 A current detecting circuit detects a resonant current in a primary side of a resonant converting circuit to generate a current detecting signal. An output detecting circuit generates a feedback signal according to the output voltage. A resonant controller generates a clock signal and adjusts an operating frequency of the... http://www.freshpatents.com/-dt20130516ptan20130121038.php Mon, 20 May 2013 13:38:32 -0700 Disclosed herein are a converter, a method for controlling the same, and an inverter. The converter includes: an input terminal having power input thereto; a first converter unit converting the power input to the input terminal to thereby output the converted power to an output terminal; and a second converter... http://www.freshpatents.com/-dt20130516ptan20130121040.php Mon, 20 May 2013 13:38:32 -0700 An example controller for a primary side control power converter includes a feedback circuit, a driver circuit, and an adjustable voltage reference circuit. The feedback circuit compares a feedback signal representative of a bias winding voltage of the power converter with a voltage reference. The driver circuit outputs a switching... http://www.freshpatents.com/-dt20130516ptan20130121039.php Mon, 20 May 2013 13:38:32 -0700 A switching amplifying method or a switching amplifier for obtaining one or more than one linearly amplified replicas of an input signal, is highly efficient, and does not have the disadvantage of “dead time” problem related to the class D amplifiers. Said switching amplifying method comprises the steps of: receiving... http://www.freshpatents.com/-dt20130516ptan20130121042.php Mon, 20 May 2013 13:38:32 -0700 The present application relates to a cascaded H-Bridge medium voltage drive, a power cell, and a bypass module thereof, wherein the bypass module is configured for bypassing a major circuit module of the power cell, while the major circuit module comprises a fuse, a rectifier, a bus capacitor and an... http://www.freshpatents.com/-dt20130516ptan20130121041.php Mon, 20 May 2013 13:38:32 -0700 A power converter includes an active front end (AFE) that is coupled by a dc link stage to a plurality of H-bridge inverters. One or more multi-phase electro-magnetic energy conversion devices, such as transformers or electric machines, with open windings that are connected to only the AFE or only the... http://www.freshpatents.com/-dt20130516ptan20130121043.php Mon, 20 May 2013 13:38:32 -0700 A harmonic cancelling interphase magnetic device (1) comprising a magnetic core of rectangular shape with three wound legs (14) and two non-wound legs (12), wherein the cross-section of said non-wound legs (12) is thinner than the cross-section of said wound legs (14). The magnetic device is designed for a front... http://www.freshpatents.com/-dt20130516ptan20130121044.php Mon, 20 May 2013 13:38:32 -0700 A controller integrated circuit (IC) for controlling a power converter uses one or more IC pins having plurality of functions such as configuration of a parameter supported by the controller IC and shutdown protection. Several different functions may be supported by a single IC pin, thereby reducing the number of... http://www.freshpatents.com/-dt20130516ptan20130121045.php Mon, 20 May 2013 13:38:32 -0700 An inverter circuit is connected in series to an AC power supply, and at the subsequent stage, a smoothing capacitor is connected via a converter circuit including semiconductor switching devices. A control circuit controls the converter circuit by providing a short-circuit period for bypassing the smoothing capacitor in each cycle,... http://www.freshpatents.com/-dt20130516ptan20130121046.php Mon, 20 May 2013 13:38:32 -0700 A phase locking system for a three-phase alternating current (AC) electric grid and a method thereof are disclosed. The method includes: receiving a three-phase voltage of the AC electric grid and converting the three-phase voltage to a two-phase voltage signal, each of which including a positive and a negative sequence... http://www.freshpatents.com/-dt20130516ptan20130121047.php Mon, 20 May 2013 13:38:32 -0700 An active power factor correction (PFC) circuit for calibrating a power factor of an AC-to-DC converter when the active PFC circuit is coupled with the AC-to-DC converter is disclosed including: a piecewise linear gain circuit, an error amplifier, a PWM controller, and a PWM signal generator. The piecewise linear gain... http://www.freshpatents.com/-dt20130516ptan20130121049.php Mon, 20 May 2013 13:38:32 -0700 A controller of a switching power converter sets an actual turn-on time of a switch in the switching power converter in each switching cycle by selecting one of a plurality of valley points of the output voltage of the switching power converter occurring subsequent to the desired turn-on time of... http://www.freshpatents.com/-dt20130516ptan20130121048.php Mon, 20 May 2013 13:38:32 -0700 A wide input voltage power supply circuit for a load includes a first regulation stage and a second regulation stage. The first regulation stage includes a linear regulator circuit configured to maintain a bus voltage within a predefined voltage range when an input voltage exceeds a predefined input level. A... http://www.freshpatents.com/-dt20130516ptan20130121050.php Mon, 20 May 2013 13:38:32 -0700 An integrated magnetic for a low harmonics three-phase bidirectional front-end and also for AC/DC and DC/AC power converters. Its use enables reduction of the harmonics of the currents absorbed or injected to three-phase power line by using only one device which integrates a splitter and an inductor function. Compared to... http://www.freshpatents.com/-dt20130516ptan20130121051.php Mon, 20 May 2013 13:38:32 -0700 Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage... http://www.freshpatents.com/-dt20130516ptan20130121052.php Mon, 20 May 2013 13:38:32 -0700 In an electric power converter, a stacked-layer unit has a plurality of semiconductor modules arrayed as layers along a stacking direction, each semiconductor module containing a semiconductor element and a pair of power terminals protruding outward in a protrusion direction at right angles to the stacking direction, each pair consisting...