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A pulse sequence control method and device for a power factor correction converter

A power factor correction, pulse sequence technology, applied in output power conversion devices, conversion of DC power input to DC power output, control/regulation systems, etc., can solve the problems of difficult compensation network design, slow transient response speed, etc. Achieve the effect of simple and reliable control method, fast transient response, and reduced sampling frequency

Active Publication Date: 2022-07-15
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0004] Aiming at the problems of difficult compensation network design and slow transient response speed in the above-mentioned traditional average current control scheme, the present invention proposes a pulse sequence control method for power factor correction converters in continuous operation mode. This method does not require compensation network and adopts high , low power duty ratio signal to achieve control, so that it can obtain unity power factor and fast transient response at the same time

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  • A pulse sequence control method and device for a power factor correction converter
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  • A pulse sequence control method and device for a power factor correction converter

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[0032] The embodiments described below are not only descriptions of a specific embodiment, but are selective descriptions of potential embodiments with certain technical features, and some technical features are not necessarily present. Specific to a specific embodiment, it is a combination of some of the following technical features, as long as this combination is not logically contradictory or meaningless. "may / may be" (may, may be, indicating choice, suggesting that there may be other alternatives; except if "ability" is expressed in the context), is a preferred embodiment description, which can be potentially other alternatives. When the technical terms "approximately", "approximately", "close to" and other approximate description words (if any) appearing anywhere in the present invention are described, the meaning to be expressed is not to require strict measurement of actual parameters, the data obtained is strictly Conforms to the general mathematical definition, becau...

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Abstract

A pulse sequence control method and device for a power factor correction converter. The control method includes: step 1, sampling the voltage and current required for subsequent calculation in the pulse sequence control method; step 2, calculating the current reference signal according to the sampled value, and selecting the half of the current according to the relationship between the output voltage and the reference voltage. The effective control pulse coefficient of the power frequency period; Step 3, calculate the duty cycle signal according to the coefficient and the sampled value; Step 4, control the on-off of the switch tube of the power factor correction converter according to the calculated duty cycle signal . The voltage and current control loops of the control device of the invention are decoupled from each other, and the design of the compensation network is not required, so that high power factor and fast transient response can be obtained at the same time.

Description

technical field [0001] The invention relates to a power factor correction converter, in particular to a pulse sequence control method and a device for a continuous working mode power factor correction converter. Background technique [0002] The power factor correction converter can reduce the harmonic pollution of the power electronic device to the public grid, and has the advantages of high power factor, small size and low cost. Power factor correction converters operating in inductor current continuous mode (CCM) usually use average current (ACM) control mode, because of its high input power factor, small current ripple, strong anti-interference ability, and constant switching frequency. Suitable for medium and high power occasions. However, the traditional average current control has two mutually coupled control loops of voltage and current, so it has the disadvantages of difficult compensation network design and slow transient response speed. [0003] Pulse train (PT)...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/42H02M3/157
CPCH02M1/42H02M3/157Y02B70/10
Inventor 沙金胡嘉豪魏红昊
Owner SOUTHWEST JIAOTONG UNIV
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