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Automatic resonance energy balancing method and used device

A technology of automatic balance and energy device, which is applied in the direction of output power conversion device, adjustment of electrical variables, instruments, etc., to achieve the effect of precise control of output current

Active Publication Date: 2021-06-01
杭州欧佩捷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently existing forward converters using resonant reset, such as figure 1 As shown, the energy corresponding to the current in the excitation inductance Lm of the isolation transformer is used to resonate with the energy corresponding to the voltage of the resonant capacitor Cr to perform energy exchange, thereby completing the reverse current in the excitation inductance Lm of the isolation transformer, and completing the isolation transformer. Reset works and may provide ZVS conduction conditions for the primary side MOS transistor Q1 of the isolation transformer

Method used

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  • Automatic resonance energy balancing method and used device
  • Automatic resonance energy balancing method and used device
  • Automatic resonance energy balancing method and used device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1: a kind of automatic balance resonance energy device, such as image 3 Shown:

[0064] Including functional module M, output isolation transformer, MOS tube Q1, MOS tube Q2, primary side MOS tube Q, two sets of resonant reset circuits;

[0065] The output isolation transformer includes a primary winding Np, a secondary winding Ns, a reset winding Nt1, and a reset winding Nt2, and these 4 windings are wound on the same magnetic core;

[0066] A set of resonant reset circuit is: resistor Ru1 and resistor Rd1 are first connected in series, then connected in parallel with resonant capacitor Cr1 and diode Dr1, and resistor Rd1 is grounded; resistor Ru1 is connected to the non-identical terminal of reset winding Nt1;

[0067] Another set of resonant reset circuit is: resistor Ru2 and resistor Rd2 are first connected in series, and then connected in parallel with resonant capacitor Cr2 and diode Dr2, and resistor Rd2 is grounded; resistor Ru2 is connected to the ...

Embodiment 2

[0086] Embodiment 2, as Figure 4 shown.

[0087] Corresponding to Example 1 image 3 than, eliminating the need for a resonant reset winding. The function module M controls the MOS transistor Q1 or MOS transistor Q2 to turn on / off according to the internal system logic circuit and the feedback voltage FB (that is, the voltage waveform of the detection winding Nt) or the body diode current information of the MOS transistors Q1 and Q2; the MOS transistor Q1 Control the resonant reset network of the resonant capacitor Cr1; the MOS transistor Q2 controls the resonant reset network of the resonant capacitor Cr2. Resonant capacitance Cr1=Cr2.

[0088] Specifically:

[0089] Including functional module M, output isolation transformer, MOS tube Q1, MOS tube Q2, primary side MOS tube Q, and a set of resonant reset circuit;

[0090] The output isolation transformer includes a primary winding Np, a secondary winding Ns, and a reset winding Nt;

[0091] The resonant reset circuit i...

Embodiment 3

[0105] Embodiment 3, corresponding image 3 The resonant reset circuit is completed on the secondary side of the isolation transformer, such as Figure 6 shown. details as follows:

[0106] Compared with embodiment 1, the difference points are:

[0107] Figure 6 The resonant reset works with the image 3 It is exactly the same, just because the resonance reset is controlled on the secondary side of the isolation transformer, so the conduction of the MOS transistor Q on the primary side of the isolation transformer needs to be driven by the functional module M on the secondary side of the isolation transformer via a coupling pulse transformer or two coupling capacitors. According to the output information of the functional module M received from the driving pulse transmitted by the coupling pulse transformer or two coupling capacitors, the functional module M1 requires the conduction and cut-off information of the MOS tube on the primary side of the isolation transformer, ...

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PUM

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Abstract

The invention discloses an automatic resonance energy balancing device, which comprises a function module M, an output isolation transformer, an MOS tube Q1, an MOS tube Q2, a primary side MOS tube Q and at least one set of resonance reset circuit; the functional module M controls the on / off of the MOS tube Q1 or the MOS tube Q2 according to the internal system logic circuit and the feedback voltage. The invention also provides an automatic resonance energy balancing method. According to the invention, there is no need to add a closed-loop regulation loop to suppress the secondary switching frequency oscillation of the excitation inductive current; according to the invention, the secondary switching frequency oscillation of the excitation inductive current can be rapidly eliminated through two switching periods, and the secondary switching frequency oscillation of the excitation inductive current can be gradually eliminated only by using a closed-loop regulation loop to suppress the secondary switching frequency oscillation of the excitation inductive current through a plurality of switching periods.

Description

technical field [0001] The invention relates to a device for automatically balancing resonance energy and a corresponding method. Background technique [0002] Currently existing forward converters using resonant reset, such as figure 1 As shown, the energy corresponding to the current in the excitation inductance Lm of the isolation transformer is used to resonate with the energy corresponding to the voltage of the resonant capacitor Cr to perform energy exchange, thereby completing the reverse current in the excitation inductance Lm of the isolation transformer, and completing the isolation transformer. Reset works and may provide ZVS conduction condition for the primary side MOS transistor Q1 of the isolation transformer. The energy corresponding to the excitation inductance Lm current of the isolation transformer is directly corresponding to the volt-second product corresponding to the conduction period of the primary side MOS transistor Q1 of the isolation transformer....

Claims

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Application Information

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IPC IPC(8): H02M3/338
CPCH02M3/3385Y02B70/10
Inventor 孙建中翁大丰
Owner 杭州欧佩捷科技有限公司
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