Low power consumption pulse control system and method

Abstract

The invention relates to the field of circuits and control, in particular to a low power consumption pulse control system and method. The phase shift trigger is connected with the logic operation controller and the frequency conversion circuit respectively, and the logic operation controller is also connected with a phase detector, a phase detector and a polarity discriminator; the low power consumption pulse control of the present invention The system, through the cooperation of the logic operation controller, the phase-shift trigger and the frequency conversion circuit, adopts the reverse sequence phase-shift control method from the input of the phase-shift trigger and the input of the frequency conversion circuit to generate a reverse-clock frequency in the opposite direction, so that the output The terminal obtains the frequency output effect of adding the power frequency and the control frequency, realizes the high-frequency output of the AC-AC conversion controlled by the low-frequency phase shift, greatly reduces the power consumption of the trigger control device, saves the cost of the trigger device, and reduces the drive The power consumption and heat dissipation conditions of the power amplifier tube improve the reliability and durability of the phase-shift trigger device.

Description

technical field [0001] The invention relates to the field of circuits and control, in particular to a low power consumption pulse control system and method. Background technique [0002] In the prior art, if the output frequency of the common AC-DC-AC conversion circuit is required to be greater than 50Hz, then the operating frequency of the conversion trigger device must be greater than 50Hz. If the total output frequency of the trigger pulse is greater than 6×50=300Hz, resulting in increased power of the trigger control device, increased temperature of the trigger power device, and high heat dissipation power consumption. [0003] Secondly, the commonly used power conversion AC-AC conversion trigger pulse control is based on the input power phase sequence A-B-C sequence to trigger phase-shift control. For the power grid frequency (50HZ), the power conversion output frequency is lower than the grid frequency (50HZ) , and the control frequency of the trigger pulse device re...

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Problems solved by technology

[0002] In the prior art, if the output frequency of the common AC-DC-AC conversion circuit is required to be greater than 50Hz, then the operating frequency of the conversion trigger device must be greater than 50Hz. If the total output frequency of the trigger pulse is greater than 6×50=300Hz, resulting in increased power of the trigger control device, increased temperature of the trigger power device, and high heat dissipation power consumption

[0003] Secondly, the commonly used power conversion AC-AC conversion trigger pulse control is based on the input power phase sequence A-B-C sequence to trigger phase-shift control. For the power grid frequency (50HZ), the power conversion output frequency is lower than the grid frequency (50HZ) , and the control frequency of the trigger pulse device remains 6×50=300HZ (three-phase bridge circuit), if the power conversion output 100Hz trigger pulse device control frequency must be much higher than 600Hz, the power consumption of the trigger pulse device will increase several times

[0004] Therefore, in the prior art, in the method for realizing pulse control, the power consumption is relatively large, need to improve

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