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Control system capable of regualting pulse width of multiple switch changer

A technology of switching converters and control systems, applied in the direction of output power conversion devices, electrical components, etc., can solve problems such as complex methods, and achieve cost-saving and high industrial value effects

Inactive Publication Date: 2005-12-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The other is to use digital circuits, that is, use single-chip microcomputers or DSPs to process signals, but this method is relatively complicated

Method used

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  • Control system capable of regualting pulse width of multiple switch changer
  • Control system capable of regualting pulse width of multiple switch changer
  • Control system capable of regualting pulse width of multiple switch changer

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Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0021] Specific embodiment 1: the controller 210 includes an input power amplifier circuit 110 input terminal connected to the switch converter drive control pulse terminal 1; output power amplifier circuit 120 output terminal connected to the drive transformer control signal input terminal 2 in the switch converter; The input end of the switch circuit 130 is connected to the output end of the input power amplifying circuit 110, and the output end is connected to the input end of the output power amplifying circuit 120; It is connected to the input end of the magnetic reset circuit 140; the output end of the magnetic reset circuit 140 is connected to the controlled end of the magnetic switch circuit 130; the signal collected from the controlled object in the switching converter is controlled by the magnetic reset circuit 140 through the coordination controller 150 to control the magnetic switch circuit 130 , the magnetic switch circuit 130 adjusts the drive control pulse termin...

specific Embodiment 2

[0022] Embodiment 2: the control system described in Embodiment 1, when the controller 210 is used for the positive and negative volt-second (or ampere-second) balance of a single AC converter, the control object selects the converter The time integral of the output signal, the sampling signal can be directly sent to the coordination controller 150 without collection; the main circuit of the switching power supply is a plurality of switching modules in a switching converter; the signal input by the switching converter driving control pulse terminal 1 is frequency-modulated Switching signal or pulse signal, etc.; the signal at the output end of the main circuit of the switching power supply is collected by Hall elements; the collection method of collecting signals adopts the master-slave method.

specific Embodiment 3

[0023] Specific embodiment 3: the control system described in specific embodiment 1, its multiple controller 210 modules are connected into a current sharing control circuit in parallel, and the current signals collected by each controller 210 modules are collected to form a current sharing bus, The signal of the module and the signal of the bus terminal of the current sharing signal are jointly sent to the coordination controller 150 to extract the control signal, and the driving waveform of each module is respectively adjusted by chopping through the control of the magnetic switch; The device sampling circuit collects; the method of gathering the collected signals adopts the maximum value method.

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Abstract

Multiple controllers are connected to form a control system. Drive control pulse ends at switch converters of all controllers are connected to each other. PWM feedback signal is input to the said drive control pulse ends, which are connected to PWM controllers. Being passed through signal process, specific variable such as current or voltage at output end of main circuit of switching power supply is connected to signal collection end of object to be controlled directly. Through a resistance, the signal at the signal collection end of object to be controlled is connected to signal bus end. Signal bus ends of all controllers are connected to each other. The input end of the drive transformer control signal in the switch converter is connected to the controlled end in the main circuit of the switching power supply.

Description

technical field [0001] The invention relates to a controller, in particular to a control system capable of simultaneously adjusting pulse widths of multiple switch converters. Background technique [0002] At present, the most commonly used pulse width adjustment technologies include PWM, frequency modulation, on-time adjustment, and off-time adjustment, etc., but there are mainly the following two methods. The first is adjusted by a dedicated PWM controller (such as UC3842, etc.), which is also the most used technology. The other is to use digital circuits, that is, use single-chip microcomputers or DSPs to process signals, but this method is relatively complicated. [0003] In the current sharing and voltage sharing control of multi-switch converters, it is necessary to control the switching signal width of each switching converter through the collection and feedback of the control quantity to realize the control of its current or voltage, so as to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
Inventor 吕征宇毛昭祺邓彦彦
Owner ZHEJIANG UNIV
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