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DCDC converter control method and device, DCDC converter

A control method and converter technology, applied in output power conversion devices, control/regulation systems, instruments, etc., can solve problems such as device damage, affecting product performance and service life, and achieve extended service life, good product performance, and prevention of The effect of overshoot exception

Active Publication Date: 2020-04-03
深圳市鼎泰佳创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. It may need to be restarted several times to realize the normal operation of the system;
[0004] 2. The hiccup start mode may have overshoot voltage many times, which may easily cause unnecessary device damage and affect product performance and life.

Method used

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  • DCDC converter control method and device, DCDC converter
  • DCDC converter control method and device, DCDC converter
  • DCDC converter control method and device, DCDC converter

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Embodiment Construction

[0056] In order to make the purpose, technical solution and technical effect of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention. In the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.

[0057] The present invention provides a DCDC converter control method, figure 1 It is a flow chart of the DCDC converter control method in Embodiment 1 of the present invention, such as figure 1 As shown, the DCDC converter control method may include the following steps:

[0058]Step 1: collect the actual value of the input current of the DCDC converter; the actual value of the input current of the DCDC convert...

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PUM

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Abstract

The invention discloses a DCDC converter control method and a device as well as a DCDC converter. The method comprises the following steps: acquiring an actual value of an input current of a DCDC converter; determining a target value of the input current of the DCDC converter; performing PID control operation on the actual value of the input current of the DCDC converter and the target value of the input current of the DCDC converter, so that a first PID control quantity is obtained; and controlling a duty ratio of a switching element contained in the DCDC converter by virtue of the first PIDcontrol quantity. By introducing PID closed-loop control, the method disclosed by the invention can effectively prevent output voltage overshoot abnormality of the DCDC converter.

Description

technical field [0001] The invention relates to the technical field of DCDC converters, in particular to a DCDC converter control method and device, and a DCDC converter. Background technique [0002] The DCDC converter is a device for direct current conversion. The main working method is to use switching elements to chop direct current into pulse waves, and to change the voltage by adjusting the duty cycle of the pulse waves. When the input voltage of the DCDC converter is constant voltage (CV) or the input current is constant current (CC), its output voltage, that is, the bus voltage, is usually in an open-loop state. In view of the above situation, the control method in the prior art is to continuously increase the output voltage of the DCDC converter until the bus overvoltage protection is triggered, and then the bus returns to normal, and the system restarts, that is, the hiccup startup method is used until the system runs normally. The above methods exist The followin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/157
CPCH02M3/157
Inventor 万华超
Owner 深圳市鼎泰佳创科技有限公司