Power conversion device and the control method thereof

A technology of power conversion and control method, which is applied to output power conversion devices, control/regulation systems, electrical components, etc., and can solve problems such as speeding up the conduction time of power crystals, reducing the efficiency of power conversion devices, and exceeding the rated voltage of power crystals.

Active Publication Date: 2020-01-17
CHICONY POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the negative effect of increasing the turn-on time of the power crystal and increasing the turn-on speed of the power crystal is that the surge of the power element on the secondary side of the conversion device increases when it is cut off, and the surge voltage wil

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  • Power conversion device and the control method thereof
  • Power conversion device and the control method thereof
  • Power conversion device and the control method thereof

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Embodiment Construction

[0030] figure 1 is a schematic diagram of a power conversion device 100 according to some embodiments of the present invention. The power conversion device 100 includes a primary side rectifier 110 , a main converter 130 , a secondary side rectifier 150 , a secondary side feedback controller 170 , a PWM controller 180 and a drive compensator 190 . like figure 1 The illustrated power conversion device 100 is only an example, and the embodiments of the present invention are not limited thereto.

[0031] In connection, the primary side rectifier 110 is coupled with the main converter 130 and the drive compensator 190 . The main converter 130 is coupled with a secondary side rectifier 150 . The secondary side feedback controller 170 is coupled to the secondary side rectifier 150 . The PWM controller 180 is coupled to the secondary side feedback controller 170 and the driving compensator 190 .

[0032] In some embodiments, such as figure 1 As shown, the primary side rectifier...

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Abstract

The invention discloses a power conversion device and a control method thereof. The power conversion device includes a primary side rectifier, a main converter, a secondary side rectifier, a secondaryside feedback controller, a PWM controller, and a driving compensator. The primary side rectifier is configured to generate a first voltage. The main converter includes a power transistor and is configured to adjust the first voltage to generate a second voltage according to a control signal. The secondary side rectifier is configured to generate an output voltage according to the second voltage.The secondary side feedback controller is configured to generate a feedback signal according to the output voltage. The PWM controller is configured to generate a PWM signal according to the feedbacksignal. The driving compensator includes a driving resistor circuit. The PWM signal outputs the control signal through the driving resistor circuit, and the driving compensator adjusts a resistance value of the driving resistor circuit according to the first voltage. The power conversion device disclosed in the invention effectively controls the driving ability of the power crystal, further improves the efficiency of the power conversion device, and reduces electromagnetic interference.

Description

technical field [0001] The present invention relates to a power conversion device and its control method, and in particular to a power conversion device of a power crystal drive circuit and its control method. Background technique [0002] Power metal-oxide-semiconductor transistors are the most commonly used power electronic components in power conversion devices. In order to reduce the switching loss of power crystals in power conversion devices, power transistors with faster switching speeds have been proposed. In order to achieve better conversion Generally, the driving resistance of the power crystal is adjusted to reduce the resistance value of the driving resistance, thereby increasing the driving current and speeding up the conduction time of the power crystal, thereby achieving smaller switching losses and improving the efficiency of the conversion device. [0003] However, the negative effect of increasing the turn-on time of the power crystal and increasing the tu...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/08H02M1/44
CPCH02M1/08H02M1/44H02M3/33523H02M1/0006H02M1/32H02M3/33507
Inventor 王思浩彭左任
Owner CHICONY POWER TECH CO LTD
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