Access Business Group International LLC

Sony Corporation

Philips IP Ventures B.v.

Sentec Corporation

Pentair Pool Products, Inc.

Origami Energy Limited

Alexander Charles Knill

Michael Craig Stevens

John Robert Dunton

Edward Colby

Julian Andrew John Fells

Christopher Michael Rutherford

Antonio Avitabile

Eiichiro Kubota

Costantino Cristiano Mariella

Nicholas George Bailey

Harshul Deepak Mehta

Kevin Alan Lamb

Andrew Nicolas Dames

Anthony Robert Glauser

Simon Shakespeare

Oliver William John Burstall

Joseph John Nathaniel Adam

Peter Martin Bance

Mark Christopher Wells

Andrew Henry John Larkins

Antony Robert Glauser

An inductive power transfer system comprises a primary unit operable to generate an electromagnetic field and at least one secondary device, separable from the primary unit, and adapted to couple with the field when the secondary device is in proximity to the primary unit so that power can be received inductively by the secondary device from the primary unit without direct electrical conductive contacts therebetween. The system detects if there is a substantial difference between, on the one hand, a power drawn from the primary unit and, on the other hand, a power required by the secondary device or, if there is more than one secondary device, a combined power required by the secondary devices. Following such detection, the system restricts or stops the inductive power supply from the primary unit. Such a system can detect the presence of unwanted parasitic loads in the vicinity of the primary unit reliably.

Controlling inductive power transfer systems

An inductive power transfer system comprises a primary unit, having a primary coil and an electrical drive unit which applies electrical drive signals to the primary coil so as to generate an electromagnetic field. The system also comprises at least one secondary device, separable from the primary unit and having a secondary coil which couples with the field when the secondary device is in proximity to the primary unit. A control unit causes a circuit including said primary coil to operate, during a measurement period, in an undriven resonating condition. In this condition the application of the drive signals to the primary coil by the electrical drive unit is suspended so that energy stored in the circuit decays over the course of the period. A decay measurement unit takes one or more measures of such energy decay during the measurement period. In dependence upon said one or more energy decay measures, the control unit controls the electrical drive unit so as to restrict or stop inductive power transfer from the primary unit.

Controlling inductive power transfer system

Information to be displayed on a display is generated in such a way that a gateway processes a measured value (with a time stamp) transmitted from a power meter, an appliance monitor, a solar module, and a battery center through a wireless LAN. In the gateway, information relating to the consumed electric energy is synchronized with each other by the time stamp. Further, an integrated value of the consumed electric energy is calculated with respect to time. The information can be secured by obtaining the integrated value of data even if breakdown of devices and the like occurs due to power failure.

Power control device and power control method

Control of supplying power to a storage device is performed based on carbon emission strength or a power rate. A battery centerthat constitutes a storage deviceperforms radio communication with a gatewayand is controlled by the gateway. The gatewaycollects a measured value of power consumed by electric appliances in a home and obtains the carbon emission strength in real time. A solar panelis provided and a battery of the storage deviceis charged with an output of the solar panel. The battery is also charged with direct current power obtained from power from outside. The power is stored in the storage devicebased on the carbon emission strength by charging control.

To solve problems arising when a power conditioner equivalent to that connected to a solar panel is connected to a power storage device. Direct-current power generated by the solar panelis supplied to a DC-DC converterand output as a predetermined direct-current voltage. The output voltage of the converteris supplied to a DC-AC inverter. Direct-current power generated by the power storage deviceis supplied to a DC-DC converter. Predetermined direct-current power from the converteris supplied to a DC-AC inverter. Alternating-current power output by the inverteris supplied to an alternating-current power system at home. The converteris configured to have two output voltages. The first output voltage is a standby voltage. The second voltage is a voltage at which the inverterstarts power supply to outside.

Power control device

An AC tied inverter connectable to an AC source, the AC tied inverter including a DC to DC current fed push-pull converter operable to generate a current waveform from a DC voltage source, the current waveform being substantially synchronized to the AC source, the push-pull converter including a transformer including a first side connectable to a battery and a second side connectable to the AC source, wherein each of the two primary sides is connected to ground via a switching transistor; and respective voltage clamps are connected between the respective primary side of the transformer and the respective switching transistor, the voltage clamp commutating the current from the respective primary side of the transformer when the switching transistor is turned off.

AC tied inverter, system and method

A grid tied inverter connectable to an electricity grid, the grid tied inverter comprising a DC to DC current fed push-pull converter operable to generate a current waveform from a DC voltage source, the current waveform being substantially synchronised to the electricity grid, and a transformer having a first side connected to the DC to DC current fed converter and a second side having an output line connectable to the grid.

Grid tied inverter, system and method including a buck-boost mode

A grid tied inverter connectable to an electricity grid, the grid tied inverter comprising a DC to DC current fed push-pull converter operable to generate a current waveform from a DC voltage source, the current waveform being substantially synchronized to the electricity grid, the push-pull converter comprising a transformer having a first side connectable to a battery and a second side connectable to the grid, wherein each of the two primary sides is connected to ground via a switching transistor; and respective voltage clamps are connected between the respective primary side of the transformer and the respective switching transistor, the voltage clamp commutating the current from the respective primary side of the transformer when the switching transistor is turned off.

Inverter, system and method comprising a DC-DC push-pull converter with a transformer

An inductive power transfer system comprises a primary unit operable to generate an electromagnetic field and at least one secondary device, separable from the primary unit, and adapted to couple with the field when the secondary device is in proximity to the primary unit so that power can be received inductively by the secondary device from the primary unit without direct electrical conductive contacts therebetween. The system detects if there is a substantial difference between, on the one hand, a power drawn from the primary unit, and on the other hand, a power required by the secondary device or, if there is more than one secondary device, a combined power required by the secondary devices. Following such detection, the system restricts or stops the inductive power supply from the primary unit. Such a system can detect the presence of unwanted parasitic loads in the vicinity of the primary unit reliably.

An inductive power transfer system () comprises a primary unit () operable to generate an electromagnetic field and at least one secondary device (), separable from the primary unit, and adapted to couple with the field when the secondary device is in proximity to the primary unit so that power can be received inductively by the secondary device from the primary unit without direct electrical conductive contacts therebetween. The system detects if there is a substantial difference between, on the one hand, a power drawn from the primary unit and, on the other hand, a power required by the secondary device or, if there is more than one secondary device, a combined power required by the secondary devices. Following such detection, the system restricts or stops the inductive power supply from the primary unit. Such a system can detect the presence of unwanted parasitic loads in the vicinity of the primary unit reliably.

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Cambridge, United Kingdom

Alexander Charles Knill