Method for controlling drive pulses of DAB type bidirectional isolation DC-DC converter

A DC-DC, driving pulse technology, applied in the direction of conversion equipment with intermediate conversion to AC, can solve the problems of reduced system reliability, increased stress of related devices, and increased system electromagnetic interference, so as to reduce system reactive power. power, reduce device stress, and reduce system losses
CN103199707AInactive Publication Date: 2013-07-10BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING JIAOTONG UNIV
Publication Date
2013-07-10
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a method for controlling drive pulses of a DAB type bidirectional isolation DC-DC converter. The method for controlling the drive pulses of the DAB type bidirectional isolation DC-DC converter comprises the steps of firstly, carrying out drive pulse control on the DAB type bidirectional isolation DC-DC converter based on a drive pulse working principle; and then inferring relevant formulas in the mode of control, and carrying out characteristic analysis and verification. The method for controlling the drive pulses of the DAB type bidirectional isolation DC-DC converter only needs to control a single variable, is simple and practical, applicable to the state of light load of a system, simple in algorithm, convenient to achieve, and prone to feedback regulation, reduces stress of devices, and effectively improves system efficiency when the system is in light load.
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Description

technical field

[0001] The invention relates to a modulation technology of a switching power tube of a bidirectional isolation DC-DC converter, in particular to a driving pulse control method of a DAB type bidirectional isolation DC-DC converter. Background technique

[0002] DAB type DC-DC converter is widely used in uninterruptible power supply (UPS), clean energy conversion system, energy double-fed system, And electric vehicle lithium battery charging and discharging equipment, etc. Its basic topology is as figure 1 As shown, the full bridge B on the primary side 1 Through the transformer and the secondary full bridge B 2 Each full bridge is composed of 4 controllable switch tubes and anti-parallel diodes. The transformer T ensures electrical isolation, and the transformation ratio is n:1. L is the leakage inductance of the transformer or an external equivalent leakage inductance, which plays a role in the circuit. The role of transferring energy.

[0003] The loss ...

Claims

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