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US 10,033,302 B2Granted
Rotary solar converter
AssigneeKoolbridge Solar, Inc.
InventorPaul Wilkinson Dent
Life of this patent
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Abstract
An advantageous method of converting solar energy from a photovoltaic array into alternating current for feeding into the electricity grid is described based on the use of an inventive rotary machine. The inventive rotary machine has a rotor and a set of stator coils which are excited in a first mode by a polyphase current derived from the solar array and simultaneously in a second, orthogonal mode by a polyphase voltage derived from the electricity grid.
Claims17
A rotary electrical machine for transferring electrical power from a Direct Current (DC) power source to an Alternating Current (AC) electricity grid, comprising:
- an induction motor driven from said DC source by a polyphase switching circuit to produce rotation of the rotor;
- and
- an induction generator coupled to said electricity grid to transfer power to said AC electricity grid;
- wherein said induction motor and said induction generator use the same stator, the same stator coils and the same rotor, the stator coils being coupled in a first mode to receive power from said polyphase switching circuit and being coupled in a second mode to deliver power to the AC electricity grid, the first and second coupling modes operating simultaneously in steady-state, and being mutually orthogonal.
1 more element
Dependencies are inferred from the claim text.