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Full-range ZVS implementation method of totem-pole PFC converter

A realization method and converter technology, applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical components, etc., can solve the problem that the full range of ZVS cannot be realized, the working effect of the totem pole PFC converter is affected, and the bridge arm is not considered Issues such as dead zone effects

Pending Publication Date: 2020-11-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, this article also does not consider the impact of the dead zone of the bridge arm on the realization of full-range ZVS, resulting in the inability to achieve full-range ZVS under a fixed dead zone
It can be seen that the traditional solutions often do not realize ZVS in the whole range, which easily affects the working effect of the corresponding totem pole PFC converter

Method used

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  • Full-range ZVS implementation method of totem-pole PFC converter
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  • Full-range ZVS implementation method of totem-pole PFC converter

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0046] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiment...

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Abstract

The invention discloses a full-range ZVS implementation method for a totem-pole PFC converter, and the method comprises the steps of obtaining an input AC voltage, an output DC bus voltage and a Boostinductive current of the totem-pole PFC converter through sampling, inputting the output DC bus voltage and a voltage reference in a PI regulator, obtaining a voltage loop output voltage, and determining a current reference signal; calculating an inductive current negative value, the extra conduction time, a main tube turn-off inductive current, and the first dead time and the second dead time required for realizing a full-range ZVS, controlling a main tube of the totem-pole PFC converter to be turned off according to the main tube turn-off inductive current, and determining the turn-off timeof each switching tube according to the first dead time and the second dead time; and determining the turn-on time of a rectifier tube of the totem-pole PFC converter according to the extra turn-on time, so that the totem-pole PFC converter realizes the full-range ZVS, and the working effect of the corresponding totem-pole PFC converter is improved.

Description

technical field [0001] The invention relates to the technical field of electric energy conversion, in particular to a full-range ZVS realization method of a totem pole PFC converter. Background technique [0002] The application of power electronics technology can greatly increase the power density of electric energy conversion devices and effectively reduce the volume and weight of the devices. With the rapid development of power electronics technology, there are more and more power electronic devices, and almost every power electronic device needs to convert AC power into DC power through rectification technology, in order to reduce the mutual influence of load harmonics on the power grid and other equipment , the input current harmonic content and power density of each electronic device need to meet the current harmonic requirements of AC electrical equipment. Therefore, it is of great significance to study a single-phase PFC (power factor correction, Power FactorCorrect...

Claims

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Application Information

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IPC IPC(8): H02M1/42
CPCH02M1/4233H02M1/0058Y02B70/10
Inventor 荀本鑫李金玉高璐陈杰龚春英
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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