RECONFIGURABLE LED ARRAYS AND LIGHTING FIXTURES
First Claim
1. A plurality of LED arrays used for general illumination applications, wherein:
- the arrays are connected in parallel;
each array comprises some LED pairs;
each LED pair comprises two branches of LED lamps capable of changing their interconnection; and
,said plurality being capable of changing the number of conducting arrays.
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Abstract
An optimum LED lighting fixture and regulation method are disclosed for reconfigurable LED arrays used for general illumination applications in AC utility power systems. The method describes a double reconfiguration scheme of a plurality of LED arrays connected in parallel, and where each array comprises some LED pairs formed with two branches of LED lamps capable of changing their interconnection. The first reconfiguration comprises changing the interconnection of the LED pairs to either parallel or series, and the second, comprises changing the number of active LED arrays within the plurality. The method comprises changing the number of active LED arrays as a way of having the magnitude of the current through said plurality to follow the magnitude of the applied voltage. The performance deficiencies of the prior arts are overcome by proposing and LED lighting fixture with higher energy efficiencies, higher power ratings, and lower harmonics generation. In addition, the simplicity of the concept allows for high degree of integrations that can make practical the implementation of driverless LED lighting fixtures.
5 Citations
20 Claims
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1. A plurality of LED arrays used for general illumination applications, wherein:
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the arrays are connected in parallel; each array comprises some LED pairs; each LED pair comprises two branches of LED lamps capable of changing their interconnection; and
,said plurality being capable of changing the number of conducting arrays. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A solid state lighting fixture used for general illumination applications, and the fixture comprises:
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a plurality of LED arrays connected in parallel; each LED array comprising some LED pairs; each LED pair formed with two branches of LED lamps; the branches of each of said pairs being capable of reconfiguring their interconnection; and
,the plurality of LED arrays being capable of changing the number of active arrays. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for solid state lighting apparatus used in general illumination applications, the apparatus comprises:
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a plurality of LED arrays connected in parallel; each LED array comprising some LED pairs; each LED pair comprising at least two branches of LED lamps capable of changing their interconnection; and
,the method comprising in changing the number of active LED arrays in such a way as to force the magnitude of the current flowing through said plurality to follow the magnitude of the applied voltage.
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Specification