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DC conversion system and DC conversion system control method

A technology of DC conversion and control method, which is applied in the direction of converting DC power input to DC power output, control/regulation system, output power conversion device, etc., and can solve problems that affect component selection and thermal design, and reduce system performance and reliability.

Active Publication Date: 2020-09-22
DELTA ELECTRONICS (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] If the phenomenon of uneven pressure occurs, it will affect the selection of components and thermal design, and it will easily reduce the system performance and operational reliability. Therefore, how to ensure equal pressure is one of the important issues in this field.

Method used

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  • DC conversion system and DC conversion system control method
  • DC conversion system and DC conversion system control method
  • DC conversion system and DC conversion system control method

Examples

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Embodiment Construction

[0096] The following examples are described in detail with the accompanying drawings in order to better understand the aspect of the present case, but the provided examples are not intended to limit the scope of this disclosure, and the description of the structure and operation is not intended to limit it. The sequence of execution and any recombination of components to produce devices with equivalent functions are within the scope of the present disclosure. In addition, according to industry standards and common practice, the drawings are only for the purpose of assisting explanation, and are not drawn according to the original scale. In fact, the dimensions of various features can be arbitrarily increased or decreased for the convenience of illustration. In the following description, the same components will be described with the same symbols for easy understanding.

[0097] The terms (terms) used throughout the specification and patent claims generally have the ordinary me...

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Abstract

The invention discloses a DC conversion system and a DC conversion system control method. The method comprises the steps that an output sensor measures an output signal of the DC conversion system; aplurality of input voltage sensors measure a plurality of input voltage signals of a plurality of first sides of at least one conversion unit of the plurality of power supply conversion modules whichare connected in series; a controller receives an output signal and the input voltage signals; the controller generates a first control signal according to the output signal and an output reference signal, generates a plurality of input reference voltage signals according to the input voltage signals, performs voltage-sharing control according to the input voltage signal and the input reference voltage signal to generate a plurality of second control signals; and the controller outputs a corresponding modulation signal according to the corresponding one of the first control signal and the second control signal so as to control a plurality of switches of the corresponding one of the conversion units. According to the invention, a hardware voltage-sharing circuit is not added, and the problem of uneven voltage is solved through a control method.

Description

technical field [0001] The content of the present invention relates to a circuit and a control method, and in particular to a DC conversion system and a control method of the DC conversion system. Background technique [0002] In the DC conversion system, in order to ensure the stable operation of the DC conversion system, it is necessary to balance the voltage of each power conversion module at the series connection and balance the current at the parallel connection. [0003] If the phenomenon of uneven pressure occurs, it will affect the selection of components and thermal design, and it will easily reduce the system performance and operational reliability. Therefore, how to ensure equal pressure is one of the important issues in this field. Contents of the invention [0004] One aspect of the present disclosure relates to a DC conversion system including a plurality of power conversion modules, an output sensor, a plurality of input voltage sensors and a controller. An...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353
Inventor 张怡陈尔东肖宏伟王钊周翩应建平刘腾
Owner DELTA ELECTRONICS (SHANGHAI) CO LTD
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