Power Reforming Methods and Associated Multiphase Lights
First Claim
1. A power reforming method comprising acts ofrectifying an alternating current (AC) voltage to a pulsating direct current (DC) voltage rectifying an AC voltage to a pulsating DC voltage;
- synchronizing an internal time base signal to the pulsating DC voltage synchronizing frequency and phase of an internal time base signal to the pulsating DC voltage;
setting pulse durations in a pulse period setting at least one rising time and at least one falling time of at least two control signals corresponding to the internal time base signal; and
turning ON and OFF of an electronic device turning at least two loads of an electronic device ON and OFF for at least one interval corresponding to the control signal, which shapes current flow to more accurately follow the pulsating DC voltage.
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Abstract
The present invention relates to power reforming methods and associated multiphase lights, especially to power reforming methods and associated multiple lights that selectively turn ON and OFF to reform current to follow voltage appropriately, which provides better heat dissipation, improving power factor and color mixing capability. The method comprises acts of rectifying an AC voltage to a pulsating DC voltage, synchronizing an internal time base signal to the pulsating DC voltage, setting pulse duration in a pulse period and turning ON and OFF of an electronic device. The device comprises at least two loads, a rectifier, at least two drivers and a controller.
46 Citations
17 Claims
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1. A power reforming method comprising acts of
rectifying an alternating current (AC) voltage to a pulsating direct current (DC) voltage rectifying an AC voltage to a pulsating DC voltage; -
synchronizing an internal time base signal to the pulsating DC voltage synchronizing frequency and phase of an internal time base signal to the pulsating DC voltage; setting pulse durations in a pulse period setting at least one rising time and at least one falling time of at least two control signals corresponding to the internal time base signal; and turning ON and OFF of an electronic device turning at least two loads of an electronic device ON and OFF for at least one interval corresponding to the control signal, which shapes current flow to more accurately follow the pulsating DC voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A multiphase light comprising
at least two lamps; -
a rectifier being connected to an external AC power source and rectifying an AC voltage to a pulsating DC voltage; at least two drivers, each driver driving the corresponding lamp that provides current to the lamp; and a controller being connected between the rectifier and the driver, and generating at least two pulse-width modulation (PWM) signals synchronized to the pulsating DC voltage, which turn the drivers ON and OFF for at least one interval during a period of the pulsating DC voltage. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A multiphase light comprising
at least two interleaved light sources; -
an electronic module being connected to the interleaved light sources, generating PWM signals and turning the interleaved light sources ON and OFF with different duty cycles; and wherein the PWM signals are synchronized to the AC voltage.
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Specification