高頻開(kāi)關(guān)電源的設(shè)計(jì)(已修改)
2025-08-17 18:27 本頁(yè)面
【正文】 邵陽(yáng)學(xué)院畢業(yè)設(shè)計(jì)摘要通信電源是電信網(wǎng)的能源，其供電質(zhì)量的好壞直接關(guān)系到整個(gè)電信網(wǎng)的暢通，本課題首先分析了近年來(lái)國(guó)內(nèi)外高頻通信開(kāi)關(guān)電源的發(fā)展?fàn)顩r，在理論分析和電路實(shí)驗(yàn)的基礎(chǔ)上，開(kāi)發(fā)出了一種新型的高頻通信開(kāi)關(guān)電源（交流配電模塊、直流配電模塊、4只高頻開(kāi)關(guān)整流模塊和監(jiān)控模塊置于同一機(jī)架內(nèi)），該電源優(yōu)化了電路的主要參數(shù)，設(shè)計(jì)了相移脈寬調(diào)制零電壓開(kāi)關(guān)諧振（PSZVS PWM）全橋變換器電路和以集成控制器UC3875芯片為核心的控制電路，實(shí)現(xiàn)了功率開(kāi)關(guān)管的零電壓開(kāi)通和近似零電壓關(guān)斷，研制出高效率（達(dá)93%）、高穩(wěn)定度(177。%）、高可靠性、低電磁干擾的高頻開(kāi)關(guān)整流模塊。同時(shí)文中還提到了以MCS51單片機(jī)電路為核心的的電源監(jiān)控模塊與監(jiān)控設(shè)計(jì)思路。保證了整機(jī)能夠安全可靠工作。關(guān)鍵詞：高頻開(kāi)關(guān)電源；相移脈寬調(diào)制；零電壓開(kāi)關(guān)ABSTRACTThe correspondence power switch is the telemunication network energy, its power supply quality quality relates directly to the entire telemunication network unimpededness, this topic has first analyzed the recent years domestic and foreign munications switching power supply development condition, tests in the theoretical analysis and the electric circuit in the foundation, developed one kind of new munication switching power supply (alternatingcurrent distribution module, direct current power distribution module, 4 high frequency switches rectification module and monitoring module puts in identical rack), this power source optimized the electric circuit main parameter, has designed the phaseshift pulseduration modulation zero potential switch resonance (PSZVS PWM) the entire bridge converter electric circuit and take integrates the controller UC3875 chip as the core control circuit, Realized the power switching valve zero potential to clear with the approximate zero potential shuts off, develops the high efficiency (to reach 93%), the high stability (177。%), redundant reliable, the low electronmagetic interference high frequency switch rectification module. At the same time in the article also proposed based on MCS51 is the core power source monitoring module and monitoring design mentality. Has guaranteed entire machine safe reliable work.Keywords: High frequency switching power。 PhaseShifting PWM ZVS；Zero Voltage Switching目錄1 緒論1 開(kāi)關(guān)電源的發(fā)展及國(guó)外現(xiàn)狀1 國(guó)內(nèi)通信電源的發(fā)展及現(xiàn)狀4 研究?jī)?nèi)容52 電路原理方案分析和選擇7 高頻開(kāi)關(guān)整流模塊7 交流配電模塊12 直流配電模塊13 監(jiān)控模塊143 主要電路設(shè)計(jì)16 高頻開(kāi)關(guān)整流模塊主電路設(shè)計(jì)16 高頻開(kāi)關(guān)整流模塊控制電路的設(shè)計(jì)23 監(jiān)控模塊的設(shè)計(jì)284 零電壓開(kāi)關(guān)的理論分析和電路實(shí)驗(yàn)31 實(shí)現(xiàn)零電壓開(kāi)關(guān)的31 左右兩支路電路轉(zhuǎn)換過(guò)程的區(qū)別33 占空比丟失現(xiàn)象33 電路實(shí)驗(yàn)結(jié)果
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