Grid Synchronisation
First Claim
1. A grid synchroniser to synchronise an AC output of an inverter to an AC grid mains, said inverter having a power input and an AC output for connection to said AC grid mains to provide a power supply input into said AC grid mains, the grid synchroniser comprising:
- an inverter controller to control said AC output of said inverter, said controller including a receiver to receive grid data from a grid sensor location remote from said inverter, said grid sensor sensing a grid characteristic of said AC grid mains,wherein said grid data comprises data relating to a grid characteristic of said AC grid mans sensed by a grid sensor, and wherein said inverter controller controls said AC output responsive to said grid data relating to said grid characteristic.
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Accused Products
Abstract
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 including a receiver to receive grid data from a grid sensor location remote from said inverter. In another aspect we describe techniques for rapid removal of charge from a control terminal of a power switching device such as a MOSFET, IGBT or Thyristor using a particular driver circuit.
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Citations
25 Claims
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1. A grid synchroniser to synchronise an AC output of an inverter to an AC grid mains, said inverter having a power input and an AC output for connection to said AC grid mains to provide a power supply input into said AC grid mains, the grid synchroniser comprising:
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an inverter controller to control said AC output of said inverter, said controller including a receiver to receive grid data from a grid sensor location remote from said inverter, said grid sensor sensing a grid characteristic of said AC grid mains, wherein said grid data comprises data relating to a grid characteristic of said AC grid mans sensed by a grid sensor, and wherein said inverter controller controls said AC output responsive to said grid data relating to said grid characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8-11. -11. (canceled)
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12. A system for micropower generation, the system comprising:
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an inverter having a power input and an AC output for connection to an AC grid mains to provide a power supply input into said AC grid mains; a sensor, remote from said inverter, to sense a grid characteristic of said AC grid mains and to transmit data relating to said sensed grid characteristic to said inverter, wherein said inverter includes a receiver to receive said transmitted data, said inverter being configured to control said AC output responsive to said data relating to said sensed grid characteristic. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A driver circuit for switching on and off a semiconductor switching device connected to an alternating current (ac) power supply, said semiconductor switching device having first and second terminals, and a switching control terminal to control switching between said first and second terminals, the driver circuit being configured to derive from said ac power supply a control signal for application to said switching control terminal of said semiconductor switching device to control said switching, said driver circuit comprising:
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an input to receive a voltage derived from said ac power supply; a reference line for coupling to one of said first and second terminals of said semiconductor switching device; a rectifier having an input coupled to said input and an output; and a resistive element coupled between said output of said rectifier and said reference line; and a drive output for driving said switching control terminal of said semiconductor switching device, said drive output being coupled to a circuit node between said resistive element and said output of said rectifier. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25-31. -31. (canceled)
Specification