A Method of Restraining Temperature Drift of Switching Power Supply

A temperature drift, switching power supply technology, applied in the direction of electrical components, output power conversion devices, etc., can solve the problems of reducing the volume of the fan, the impact of the temperature drift of the analog device, and the lack of flexibility, etc., to achieve fast and accurate compensation and suppression Effect of Temperature Drift
CN104779779BActive Publication Date: 2017-05-17XIAMEN UNIV OF TECH
8 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAMEN UNIV OF TECH
Publication Date
2017-05-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the technical field of switching power supplies, in particular to a method for suppressing temperature drift of switching power supplies. The method is applied to a device including a PWM module, an ADC module, a comparator and a digital PID adjustment module. The neural network parameter model is established through the digital PID adjustment module. According to the law of temperature drift in a wide temperature environment, the neural network is used to establish parameters. Model, training to get the temperature drift compensation data lookup table of PWM drive duty ratio Δd, so as to compensate the temperature drift of the power supply more quickly based on the lookup table, calculate and change the duty ratio, and obtain the change based on the comparison result of the comparator The output DC voltage value adopts a concise and effective single-cycle modulation mode modulation strategy.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of switching power supplies, in particular to a method for suppressing temperature drift of switching power supplies. Background technique

[0002] Since the 1950s, after decades of development, switching power supplies have gradually replaced traditional phase-controlled regulated power supplies. At the end of the 1970s, foreign countries first developed a pulse width modulation (PWM) controller integrated circuit [1], which made a greater breakthrough in the development of switching power supply in the direction of integration. The development of power electronic devices provides the necessary conditions for the development of power electronics technology, and also promotes the rapid development of switching power supplies. The frequency of switching power supplies is further increased, making the power supply smaller, lighter, and power density has been further improved. The emergence of IGBT allows swit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More