Bizarre Patents
Decorative Jeweled Wheel Cover
An improved wheel is provided wherein decorative items such as gem stones are embedded in either the wheel surface, a special mounting section attached to the wheel surface, or to a spoke strap that wraps around each spoke and positions embedded gem stones on the outside surface of the spoke.
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| Application No. | Application Title | Issue Date |
| 20120104960 | CIRCUIT FOR CONVERTING DC INTO AC PULSED VOLTAGE The present invention proposes a circuit for converting DC into AC pulsed voltage. The circuit comprises two or four controllable semiconductor switches as well as a corresponding controller unit. The controller unit controls the opening and closing of the two or four c... | 05/03/2012 |
| 20120081937 | Converters and Inverters for Photovoltaic Power Systems A power system includes a plurality of DC/DC converters and a DC/AC inverter. The plurality of DC/DC converters having outputs electrically connected in parallel for supplying a DC voltage bus to an input of the DC/AC inverter. The plurality of DC/DC converters each inc... | 04/05/2012 |
| 20120049782 | Electric power converter, driving apparatus and electric power steering apparatus A control unit of an electric power converter, which is used in a three-phase motor having two winding wire systems, performs for a first duty instruction signal regarding a voltage applied to a first winding wire group a flatbed two-phase modulation process, and perfor... | 03/01/2012 |
| 20120039101 | Method of and Apparatus for Connecting a Photovoltaic Device to an AC Power Grid A method of connecting a photovoltaic device to an AC power grid through an inverter includes monitoring a DC voltage at an input of an inverter, and activating the inverter when the monitored DC voltage exceeds a first predetermined threshold. The method further includ... | 02/16/2012 |
| 20120033468 | POWER CONVERSION SYSTEMS In a general aspect, a power conversion system includes a power converter, a transformer, and a voltage adjustment device. The power converter is configured to receive a variable DC power generated by a power generation device and to convert the received DC power to AC ... | 02/09/2012 |
| 20120020128 | FUEL CELL SYSTEM A fuel cell system FCS includes a fuel cell FC, a motor ES4 connected to the fuel cell FC, an FC boost converter ES6 which raises the output voltage of the fuel cell FC to output the voltage to the motor ES4, an inverter ES3, a current sensor... | 01/26/2012 |
| 20120008352 | METHOD AND APPARATUS OF PROVIDING A BIASED CURRENT LIMIT FOR LIMITING MAXIMUM OUTPUT POWER OF POWER CONVERTERS A biased current-limit circuit for limiting a maximum output power of a power converter includes an oscillator for generating a pulse signal and an oscillation signal. A waveform generator generates a waveform signal in response to the oscillation signal. A sample-hold ... | 01/12/2012 |
| 20110316480 | SYSTEMS AND METHODS FOR DYNAMIC POWER COMPENSATION, SUCH AS DYNAMIC POWER COMPENSATION USING SYNCHROPHASORS An electrical power generation system, such as a solar power inverter, can provide dynamic real-time power compensation, so as to mitigate the effects of voltage sags and swells (e.g., on a utility grid) and thereby provide voltage support functionality to a local grid.... | 12/29/2011 |
| 20110305053 | Switching Control Circuits with Valley Lock for Power Converters A switching control circuit for a switching power converter is provided. The switching control circuit is coupled to a switching device and an auxiliary winding of a transformer. The switching control circuit includes a valley detecting circuit, a valley lock circuit, a... | 12/15/2011 |
| 20110291486 | METHOD FOR DISTRIBUTED POWER HARVESTING USING DC POWER SOURCES A system and method for combining power from DC power sources. Each power source is coupled to a converter. Each converter converts input power to output power by monitoring and maintaining the input power at a maximum power point. Substantially all input power is conve... | 12/01/2011 |
| 20110292701 | METHOD AND APPARATUS FOR IMPROVED BURST MODE DURING POWER CONVERSION A method and apparatus for power conversion. In one embodiment, the apparatus comprises a DC-AC conversion stage; an intermediate capacitor coupled across the DC-AC conversion stage; and a burst mode controller coupled to the intermediate capacitor and the DC-AC convers... | 12/01/2011 |
| 20110292700 | POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING THEREOF In a power conversion device that includes a PWM converting means for generating a PWM pulse by comparing three-phase voltage commands with a triangular wave carrier signal, a power converter for converting between a DC voltage and a three-phase AC voltage by driving a ... | 12/01/2011 |
| 20110266992 | Power Conversion Device A power conversion device includes a power switching circuit that has a plurality of series circuits in each of which a switching element that operates as an upper arm and a switching element that operates as a lower arm are connected in series, and a control circuit th... | 11/03/2011 |
| 20110255316 | Isolating Circuit for DC/AC Converter An isolating circuit for a DC/AC converter includes an input, an output, an energy storage element and a switch element. The DC/AC converter includes an energy storage isolated from mains during a freewheeling phase. The output of the isolating circuit is configured to ... | 10/20/2011 |
| 20110254372 | Alternative-Source Energy Management A power converter system includes a power converter system including: a DC-to-AC power converter; a first output configured to be coupled to a power grid; a first input configured to be coupled to the power grid; second outputs each configured to be coupled to a corresp... | 10/20/2011 |
| 20110163669 | DC/AC INVERTER SUBSTRATE HAVING VOLTAGE ABNORMALITY DETECTOR CIRCUIT A DC/AC inverter substrate includes a voltage abnormality detector circuit. All of a high voltage side detection sensor, a low voltage side detection sensor, and a high-voltage and low-voltage detection sensor in the voltage abnormality detector circuit are disposed wit... | 07/07/2011 |
| 20110164440 | VOLTAGE-SENSED SYSTEM AND METHOD FOR ANTI-ISLANDING PROTECTION OF GRID-CONNECTED INVERTERS A method is provided for preventing islanding of a power source connected to an electric AC grid via an interface. The method senses an output voltage waveform of the interface, controls an output current waveform of the interface to track a reference current waveform h... | 07/07/2011 |
| 20110141779 | Boost Multilevel Inverter System A boost inverter includes a first capacitor for connection in parallel with a dc supply voltage; a second capacitor connected in series with the first capacitor; an energy transfer path including a transfer capacitor and switches connected to the transfer capacitor for ... | 06/16/2011 |
| 20110141778 | SWITCH CONTROLLER FOR SWITCHING POWER SUPPLY AND METHOD THEREOF A switch controller for switching power supply is coupled to an auxiliary winding of the switching power supply through a detecting resistor. The switch controller provides a detecting current passing through the detecting resistor for keeping the voltage level of a det... | 06/16/2011 |
| 20110049990 | GRID SYNCHRONISATION The invention relates to a grid synchroniser for connecting an AC output of a power converter to the AC grid mains. In one aspect the invention provides a grid synchroniser comprising an inverter controller to control an AC output of the inverter, the controller includi... | 03/03/2011 |
| 20110038185 | Low stress soft charge circuit for diode front end variable frequency drive A variable frequency drive comprises a diode rectifier receiving multiphase AC power from a source and converting the AC power to DC power. An inverter receives DC power and converts the DC power to AC power to drive a load. A link circuit is connected between the diode... | 02/17/2011 |
| 20110013432 | Systems, Methods, and Apparatus for Operating a Power Converter Embodiments of the invention can provide systems, methods, and apparatus for operating a power converter. According to one embodiment, a system for operating a power converter can be provided. The system can include a direct current (DC) power source with an output elec... | 01/20/2011 |
| 20100315850 | POWER INVERTER A power inverter is provided for converting DC power into AC power. The inverter may be operable to couple to two or more transformer modules each operable to convert at least a portion of the DC power to at least a portion of the AC power. In one embodiment, two or mor... | 12/16/2010 |
| 20100309695 | Method and apparatus for improved burst mode during power conversion A method and apparatus for coupling power to an AC power grid. In one embodiment, the method comprises interleaving a storage period and a burst period, wherein (i) energy is stored during the storage period for a predetermined number of grid voltage cycles, and (ii) st... | 12/09/2010 |
| 20100302819 | SOLAR INVERTER AND CONTROL METHOD A power generation system including a photovoltaic (PV) module to generate direct current (DC) power is provided. The system includes a controller to determine a maximum power point for the power generation system and a boost converter for receiving control signals from... | 12/02/2010 |
| 20100277002 | POWER CONVERSION SYSTEMS In a general aspect, a power conversion system includes a power converter, a transformer, and a voltage adjustment device. The power converter is configured to receive a variable DC power generated by a power generation device and to convert the received DC power to AC ... | 11/04/2010 |
| 20100253250 | CURRENT CONTROLLER FOR AN ELECTRIC MACHINE A current controller for an electric machine that includes an input, an output, a threshold generator and a comparator. The threshold generator stores a scaling factor and includes a PWM module that operates on a reference voltage to generate a threshold voltage. The du... | 10/07/2010 |
| 20100246223 | TRANSFORMERLESS PHOTOVOLTAIC GRID-CONNECTING INVERTING DEVICE AND CONTROL METHOD THEREOF The present invention relates to a transformerless photovoltaic grid-connecting inverting device and an inverting control method thereof. The inverting device comprising a boosting unit, an inverting unit, a grid-connecting unit and a control unit. The boosting unit is ... | 09/30/2010 |
| 20100208501 | POWER TRANSFER MANAGEMENT FOR LOCAL POWER SOURCES OF A GRID-TIED LOAD A power transfer system provides power factor conditioning of the generated power. Power is received from a local power source, converted to usable AC power, and the power factor is conditioned to a desired value. The desired value may be a power factor at or near unity... | 08/19/2010 |
| 20100195357 | METHOD AND APPARATUS FOR DETERMINING A CORRECTED MONITORING VOLTAGE A method and apparatus for determining a corrected monitoring voltage, at least a portion of the method being performed by a computing system comprising at least one processor. The method comprises generating power at a first location; monitoring the generated power by ... | 08/05/2010 |
| 20100149844 | INVERTER APPARATUS An inverter apparatus converts a DC power of a capacitor charged via a rectifier circuit connected to a first AC power system into an AC power, and supplies the AC power to a second AC power system. The inverter apparatus includes a discharge circuit, a control circuit,... | 06/17/2010 |
| 20100124084 | POWER CONVERTER WITH CONTROL CIRCUIT AND RELATED CONTROL METHOD A control circuit for use in a power converter has a multi-function terminal, a current comparator circuit, and an under-voltage detection circuit. The current comparator circuit compares current flowing through a power switch of the power converter with a reference val... | 05/20/2010 |
| 20100091532 | METHOD AND APPARATUS FOR IMPROVED BURST MODE DURING POWER CONVERSION A method and apparatus for converting DC input power to AC output power. The apparatus comprises an input capacitor, a DC-AC inverter, a burst mode controller for causing energy to be stored in the input capacitor during at least one storage period and the energy to be ... | 04/15/2010 |
| 20100084924 | APPARATUS AND METHOD FOR PRODUCING AC POWER A multi-input electrical power conversion device is provided for converting multiple DC energies each arising from different junctions in a multi-junction solar cells into AC energy. The device includes a plurality of electrical inputs for receiving the multiple DC ener... | 04/08/2010 |
| 20100073976 | DC/AC CONVERTER A DC/AC converter includes: a resonant circuit including a transformer having a primary winding and a secondary winding and at least one capacitor, in which the capacitor is connected to at least one of the primary winding and secondary winding of the transformer, and a... | 03/25/2010 |
| 20100067271 | REACTIVE POWER COMPENSATION IN SOLAR POWER SYSTEM A method of providing reactive power support is proposed. The method includes detecting at least one of a plurality of network parameters in a distributed solar power generation system. The generation system includes a plurality of photovoltaic modules coupled to a grid... | 03/18/2010 |
| 20100046258 | POWER SUPPLY CONTROL SYSTEM A digital control system for a switch mode power supply (SMPS), the control system having a demand input for a signal indicating whether an output voltage of said SMPS is above or below a desired value, and a drive output for a switch controlling energy transfer between... | 02/25/2010 |
| 20100008106 | SWITCHING CONTROL CIRCUIT, SEMICONDUCTOR DEVICE AND SWITCHING POWER SOURCE APPARATUS At the starting time and an overload time in which the output voltage of the switching power source apparatus is low, if an overcurrent state, in which the ON period of the switching device becomes short and a current not less than the current limit value of the switchi... | 01/14/2010 |
| 20100008113 | SEMICONDUCTOR POWER CONVERSION DEVICE A surge voltage target setting unit (103) obtains a main circuit power supply voltage (VH) of a semiconductor power conversion device based on an inter-terminal voltage (Vce) of a semiconductor switching element (100) detected by a voltage detection unit (... | 01/14/2010 |
| 20100002470 | METHOD FOR MAXIMUM POWER POINT TRACKING OF PHOTOVOLTAIC CELLS BY POWER CONVERTERS AND POWER COMBINERS This invention relates to a method for Maximum Power Point Tracking (MPPT) a photovoltaic cell by a power converter that provides an output current at voltages useful to operate electronics or charge batteries. This invention also relates to a method for Maximum Power P... | 01/07/2010 |
