【正文】 ............................................................................................ 2 BOOST 型 PFC 電路的分析 ................................................................................................. 2 主電路與 DSP 的連接 ................................................................................................ 3 采樣電路 ................................................................................................................... 4 主電路分析 ............................................................................................................... 5 主電路及 PI調(diào)節(jié)器的參數(shù)選擇 .................................................................................. 8 4 逆變器部分 .................................................................................................................................... 9 主電路（逆變部分）分析 .................................................................................................... 9 正弦波脈寬調(diào)制技術(shù)（ SPWM） ....................................................................................... 10 單極性正弦波脈寬調(diào)制 .............................................................................................11 雙極性正弦波脈寬調(diào)制 ............................................................................................ 12 SPWM 波形的實(shí)現(xiàn) ........................................................................................................... 13 DSP 在逆變器中的應(yīng)用 ..................................................................................................... 13 帶死區(qū)信號的產(chǎn)生 ................................................................................................... 13 逆變器部分的采樣時(shí)序及 A/D 轉(zhuǎn)換 ......................................................................... 14 基于 DSP 的 逆變器的實(shí)現(xiàn) ................................................................................................ 15 逆變器控制方法的發(fā)展 ............................................................................................ 15 逆變器電路分析 ...................................................................................................... 16 主電路與 DSP 的連接 .............................................................................................. 18 主電路參數(shù)選擇 ............................................................................................................... 19 5 DC/DC 變換部分 .......................................................................................................................... 1 DC/DC 主電路 .................................................................................................................... 1 2 基于 DSP 控制的 DC/DC 實(shí)現(xiàn) ............................................................................................. 2 兩路 PWM 波形的實(shí)現(xiàn)方法 ....................................................................................... 3 主電路與 DSP 的連接 ................................................................................................ 4 主電路參數(shù)選擇 .................................................................................................................. 4 6 其它重要電路 ............................................................................................................................... 7 輔助電路設(shè)計(jì) ..................................................................................................................... 7 驅(qū)動電路設(shè)計(jì) ..................................................................................................................... 7 旁路開關(guān)選擇 ..................................................................................................................... 8 正弦波發(fā)生器 ........................................................................................................................ 8 1 0 前言 隨著信息技術(shù)的迅速發(fā)展和計(jì)算機(jī)的日益普及，對電源系統(tǒng)供電質(zhì)量和可靠性的要求越來越高，不間 斷電源（ UPS）的應(yīng)用越來越廣泛。在電路板設(shè)計(jì)中加入了各種抗干擾措施，提升了系統(tǒng)的穩(wěn)定性。 本文介紹了 UPS 逆變電源的組成，分析了各部分的作用及其工作原理，研究了實(shí)現(xiàn)UPS 逆變控制的關(guān)鍵技術(shù)。 1 中文題目 ：基于 DSP 帶同步鎖相的逆變器控制系統(tǒng)設(shè)計(jì) 外文題目 ： A Design of Phase Locked Inversion Control System Based on DSP 畢業(yè)設(shè)計(jì)（論文）共 頁（其中：外文文獻(xiàn)及譯文 頁） 圖紙共 張 完成日期 20年月 答辯日期 20年月 摘要 宋體四號居中 2 UPS ( Uninterruptible Power System)是一種電力設(shè)備，當(dāng)電網(wǎng)供電出現(xiàn)緊急故障時(shí)： UPS逆變電源可以利用蓄電池為負(fù)載提供應(yīng)急供電。除了電信、金融等行業(yè)對 UPS 的需求居高不下之外，制造業(yè)、交通業(yè)、能源業(yè)對于 UPS 的需求量呈現(xiàn)上升趨勢。本文在 Album Designer 軟件環(huán)境下繪制電路原理圖和 PCB 電路板。 關(guān)鍵詞 :正弦脈寬調(diào)制 SPWM； TMS320LF2407A；電力電子系統(tǒng)；逆變器；數(shù)字化精準(zhǔn)控制 1 ABSTRACT UPS (Uninterrupted Power Supply) is an electrical equipment that can provide emergent power supply by use of storage battery when power failure. In addition, UPS can improve the quality of mains power country has large demand for UPS. The annual sales of UPS reach to 8 billion yuan. The demand is continuously large in the field of telemunication and finance and begins to rise in the field of manufacturing, transportation and energy source. This dissertation introduces the structure of UPS, analyzes the function and operation principle of each part of UPS and studies the key technique for UPS inversion control. The UPS inversion control system based on DSP is put forward. The system is bined with hardware design and software design and is suitable for digital accurate control. In terms of the hardware design of UPS inversion control system, TMS320LF2407A, the 32bit DSP manufactured by TI, is used to control inverter and generate drive signal for IGBT and SCR. EPM240T 100C, the high performance and low power consumption manufactured by Altera, is used for interface extension and phase shift of drive signal. The schematics and printed circuit board are designed in the environment of Altium Designer. Antiinterference methods are adopted to enhance system stability. After hardware design and software design, the control board is jointtested with UPS. T