Wireless power transfer with generalized harmonic current
First Claim
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1. A wireless charging arrangement comprising:
- primary side circuitry, including a voltage source, switches, and a primary coil arranged to couple with a secondary coil, configured to form a series resonant converter when transferring power from the primary coil to the secondary coil; and
a controller configured to selectively activate the switches to cause the transferring such that for each fundamental cycle, a pair of consecutive active resonant cycles have same polarity.
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Abstract
A wireless charging arrangement has primary side circuitry including a voltage source, switches, and a primary coil arranged to couple with a secondary coil. The primary side circuitry forms a series resonant converter when transferring power from the primary coil to the secondary coil. The wireless charging arrangement also includes a controller to selectively activate the switches to cause the transferring such that for each fundamental cycle, a pair of consecutive active resonant cycles have same polarity.
9 Citations
15 Claims
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1. A wireless charging arrangement comprising:
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primary side circuitry, including a voltage source, switches, and a primary coil arranged to couple with a secondary coil, configured to form a series resonant converter when transferring power from the primary coil to the secondary coil; and a controller configured to selectively activate the switches to cause the transferring such that for each fundamental cycle, a pair of consecutive active resonant cycles have same polarity. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless charger comprising:
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primary side circuitry, including switches and a primary coil that is arranged to couple with a secondary coil, configured to form a series resonant converter when transferring power; and a controller configured to selectively activate the switches to cause the transferring such that for each fundamental cycle, a quotient of a total number or resonant cycles and a total number of active resonant cycles has a non-integer value. - View Dependent Claims (7, 8, 9, 10)
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11. A wireless charger comprising:
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primary side circuitry, including switches and a primary coil that is arranged to couple with a secondary coil, configured to form a series resonant converter when transferring power; and a controller configured to selectively activate the switches to cause the transferring such that for each fundamental cycle, a quotient of a total number or resonant cycles and a total number of active resonant cycles has an integer value greater than one, and the total number of active resonant cycles is greater than one. - View Dependent Claims (12, 13, 14, 15)
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Specification