Unlock instant, AI-driven research and patent intelligence for your innovation.

An asymmetrical control circuit and control method suitable for resonant network semi-synchronous rectifiers

A technology of synchronous rectifier and resonant network, applied in the direction of control/adjustment system, instrument, electrical components, etc., can solve the problems of high cost, low diode efficiency, complex synchronous rectification control, etc., and achieve the effect of low cost and simple control

Active Publication Date: 2020-02-07
苏州卡方能源科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of diodes has disadvantages such as low efficiency, while the use of synchronous rectification has disadvantages such as complicated control and high cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An asymmetrical control circuit and control method suitable for resonant network semi-synchronous rectifiers
  • An asymmetrical control circuit and control method suitable for resonant network semi-synchronous rectifiers
  • An asymmetrical control circuit and control method suitable for resonant network semi-synchronous rectifiers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: as Figure 1-7 As shown, an asymmetric control circuit suitable for semi-synchronous rectifiers in resonant networks, including DC power supply, inverter, inductance-capacitor resonant network, synchronous signal sampling circuit, synchronous signal processing circuit, rectifier drive, DSP / MCU, semi-synchronous Rectifier, output filter circuit and battery;

[0023] The DC power supply is connected to the input terminal of the inverter, the output terminal of the inverter is connected to the input terminal of the inductor-capacitor resonance network, the output terminal of the inductor-capacitor resonance network is connected to the input terminal of the semi-synchronous rectifier, and the synchronous signal sampling circuit is sampled to obtain the output terminal of the inductor-capacitor resonance network The high-frequency current signal, the synchronous signal processing circuit converts the high-frequency current signal into a high-frequency voltage s...

Embodiment 2

[0032] Embodiment 2: Resonant Network Taking the bilateral LCC compensation network as an example, the simulation is carried out by using the software LTspice. Its simulation schematic diagram is as follows figure 2 , a schematic diagram of an asymmetric control circuit for a semi-synchronous rectifier based on a bilateral LCC resonant network, where U DC For 400V DC power supply, MOS tube S 1 , S 2 , S 3 and S 4 To form a full-bridge inverter, the series resonant inductor L f1 , parallel resonant capacitor C f1 , series resonant capacitor C 1 Constitute the transmitting side LCC resonant network, the transmitting coil is L 1 , the receiving coil is L 2 , the energy in L 1 and L 2 between the resonant transmission, the series resonant inductanceL f2 , parallel resonant capacitor C f2 , series resonant capacitor C 2 Constitute the receiving side LCC resonant network. Semi-synchronous rectifiers consist of diode D 1 and D 2 , MOS tube S 5 and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to an asymmetrical control circuit suitable for a resonant network semi-synchronous rectifier and its control method. In the present invention, the DC power supply is connected to the input end of the inverter, and the output end of the inverter is connected to the input end of the inductor-capacitor resonance network. The output end of the capacitor resonant network is connected to the input end of the semi-synchronous rectifier. The synchronous signal sampling circuit samples the high-frequency current signal output by the inductance-capacitor resonant network. The synchronous signal processing circuit converts the high-frequency current signal into a high-frequency voltage signal and the synchronous signal processing circuit The high-frequency voltage signal is filtered and amplified and then sent to DSP / MCU. DSP / MCU transmits the PWM signal to the rectifier driver. The rectifier driver is connected to the semi-synchronous rectifier. After receiving the driving signal, the semi-synchronous rectifier turns on the switch tube for rectification. Semi-synchronous The output end of the rectifier is connected to the input end of the output filter circuit, and the output end of the output filter circuit is connected to the battery. The invention has the advantages of simple control, low cost and high efficiency.

Description

technical field [0001] The invention relates to an asymmetric control circuit suitable for a resonant network semi-synchronous rectifier and a control method thereof, belonging to the technical field of resonant network control. Background technique [0002] As the resonant converter is more and more widely used in power electronic circuits, especially its resonant element resonates to make the voltage or current periodically cross zero, which prepares the conditions for the switching device to realize zero-voltage switching or zero-current switching. As power electronic converters tend to be characterized by high frequency, modularization, and miniaturization, efficiency is particularly important in converters. Like a DC-DC converter, its main components include a DC power supply, an inverter, a resonant network, a rectifying and filtering network, and a load. In terms of switching high frequency loss, the use of resonant network reduces switching loss and improves efficie...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335H02M1/36H02M1/088
CPCH02M1/088H02M1/36H02M3/33592H02M1/0058Y02B70/10
Inventor 李思奇舒文彬代维菊荣恩国罗淑龄龚泽威一
Owner 苏州卡方能源科技有限公司