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Phase shift modulation method, module, system and storage medium

A technology of phase-shift modulation and phase-shift angle, which is applied in the direction of control/regulation system, adjustment of electric variable, output power conversion device, etc. It can solve the problems of slow dynamic response speed, so as to improve dynamic response speed and reduce inductor current stress, reducing the effect of DC offset

Pending Publication Date: 2022-06-21
SUZHOU INOVANCE CONTROL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a phase-shift modulation method, module, system and storage medium, aiming to solve the technical problem of slow dynamic response speed in the DC converter in the prior art

Method used

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  • Phase shift modulation method, module, system and storage medium
  • Phase shift modulation method, module, system and storage medium
  • Phase shift modulation method, module, system and storage medium

Examples

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Embodiment 1

[0070] refer to figure 1 The schematic flow chart of the present invention proposes the first embodiment of the phase shift modulation method of the present invention, and the phase shift modulation method is applied to a phase shift modulation system.

[0071] like figure 2 Shown is a schematic diagram of the connection of the phase-shift modulation system, which may include:

[0072] A converter 1000, configured to perform voltage conversion on the received input voltage to obtain an output voltage; and

[0073] The phase-shift modulation module 2000 is configured to perform phase-shift control on the converter 1000 according to the output voltage using a phase-shift modulation method.

[0074] The converter 1000 may be a voltage transformation device that can realize voltage transmission and voltage conversion. The voltage transformation device may be an integrated module, an integrated chip, etc. connected to the phase-shift modulation module 2000, or an independent ter...

Embodiment 2

[0147] Based on the same inventive concept, refer to Figure 5 and Figure 9 , the first embodiment of the phase-shift modulation module of the present invention is proposed, the phase-shift modulation module can be a virtual device, applied to the control module of the converter, or a hardware device composed of specific hardware connections, applied to the phase-shift modulation system In , the converter is phase-shifted and modulated.

[0148] Combine below Figure 5 The connection schematic diagram shown in the present embodiment provides a detailed description of the phase-shift modulation module, and the device may include:

[0149] An adjustment unit, configured to determine the phase shift angle of the current calculation cycle, and register the phase shift angle of the previous calculation cycle;

[0150] A processing unit connected to the adjustment unit, configured to output a phase shift angle difference according to the phase shift angle of the current calculat...

Embodiment 3

[0172] Based on the same inventive concept, refer to figure 2 and Figure 10 , the first embodiment of the phase-shift modulation system of the present invention is proposed. like figure 2 As shown in the connection diagram, the system can include:

[0173]A converter 1000, configured to perform voltage conversion on a received input voltage, the converter comprising a first chopping unit and a second chopping unit; and

[0174] The phase-shift modulation module 2000 is configured to perform phase-shift control on the converter by using the above-mentioned phase-shift modulation method.

[0175] Specifically, the converter 1000 performs voltage conversion on the received input voltage to obtain an output voltage; the phase-shift modulation module 2000 performs phase-shift control on the converter 1000 according to the output voltage by using the above-mentioned phase-shift modulation method.

[0176] Wherein, the converter 1000 may be a voltage transformation device capa...

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Abstract

The invention discloses a phase shift modulation method, module and system and a storage medium, and relates to the technical field of DC converters, and the method comprises the steps: obtaining a phase shift angle of a current calculation period and a phase shift angle of a previous calculation period, and carrying out the calculation to obtain a phase shift angle difference value; under the condition that the first chopping unit is used as a reference chopping unit, acquiring an initial carrier count value peak value and an initial modulated wave count value of the first chopping unit; according to the phase shift angle difference value, adjusting the initial carrier wave count value peak value and the initial modulation wave count value to obtain a target carrier wave count value and a target modulation wave count value of the second chopping unit in the current calculation period; and determining a target driving signal of the second chopping unit based on the target carrier count value and the target modulated wave count value. According to the invention, the problems of slow dynamic response speed and large inductive current direct current offset in the dynamic process of the direct current converter in the prior art are solved, and the technical effect of improving the dynamic response speed of the direct current converter is realized.

Description

technical field [0001] The present invention relates to the technical field of DC converters, in particular to a phase shift modulation method, module, system and storage medium. Background technique [0002] A DC converter (DC-DC converter) is a power electronic device that converts a DC voltage into another DC voltage with different output characteristics. Dual active full-bridge converter (DAB converter) is a DC-DC converter commonly used in AC-DC microgrid, solid-state transformer, electric vehicle, energy storage and other application scenarios, because of its bidirectional power transmission, electrical isolation, high side ratio Many advantages such as buck-boost and easy realization of soft-switching control have received more and more attention and research. [0003] In the related technology, when the DAB converter adopts the traditional phase-shift modulation method, when a disturbance occurs and the phase-shift angle changes suddenly, there will be a DC offset c...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/32
CPCH02M3/33553H02M1/32
Inventor 王宁陈立
Owner SUZHOU INOVANCE CONTROL TECH CO LTD
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