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电力机车空调[cityname]电力变压器的研究

作者:电力变压器厂  发布日期:2019-04-08  

     关键词: DSP芯片 电力机车 电力变压器 摘要:TMS320LF2407是一款价格低廉,应用较多的DSP芯片,指令周期可达25ns(40MHz)。与单片机相比TMS320LF2407的优势表现为:数据处理能力强;运算速度高;PWM分辨率高;能实时完成复杂计算控制;采样周期更短。它有两个事件管理器模块EVA和EVB,能够实现:16通道A/D转换;三相反相器控制;对称和非对称的PWM波形;非常适用于电机控制和电力变压器控制。

YINYAN

足球彩票 TMS320LF2407SHIYIKUANJIAGEDILIAN,YINGYONGJIAODUODEDSPXINPIAN,ZHILINGZHOUQIKEDA25ns(40MHz)。YUDANPIANJIXIANGBI,TMS320LF2407DEYOUSHIBIAOXIANWEI:SHUJUCHULINENGLIQIANG;YUNSUANSUDUGAO;PWMFENBIANLVGAO;NENGSHISHIWANCHENGFUZAJISUANKONGZHI;CAIYANGZHOUQIGENGDUAN。TAYOULIANGGESHIJIANGUANLIQIMOKUAIEVAHEEVB,NENGGOUSHIXIAN:16TONGDAOA/DZHUANHUAN;SANXIANGFANXIANGQIKONGZHI;DUICHENGHEFEIDUICHENGDEPWMBOXING;FEICHANGSHIYONGYUDIANJIKONGZHIHEDIANLIBIANYAQIKONGZHI。

足球彩票 WEILEGAISHANDIANLIJICHESIJISHIGONGZUOTIAOJIAN,JICHESIJISHINEIYIBANDOUANZHUANGKONGDIAOQI。YOUYUJICHESIJISHIGONGZUOTIAOJIANJIWEIELIE,JICHEYUNXINGSHIZHENDONGDA,GONGZUOHUANJINGWENDUGAO,GONGDIANPINZHICHA,YINCISUOANZHUANGDEKONGDIAOQIDOUYINGPEIBEIZHUANYONGDESHIYONGYUJICHEKONGDIAOQISHIYONGDEDIANLIBIANYAQI。

足球彩票 ZAIDIANLIJICHESHANG,TONGCHANGDIANLIBIANYAQIPINZHICHABIAOXIANZAILIANGGEFANGMIAN。

足球彩票 (1)WOGUODIANLIJICHEGONGDIANDIANWANGDIANYABODONGDA。QIEDINGDIANYAWEI25kV,ERSHIJIDIANYAZAI18~31kVFANWEINEIBODONG,BODONGFANWEIYOUSHISHENZHIGENGDA;DIANWANGDIANYAYOUJICHENEIJIANGZHIDANXIANGJIAOLIU396V,XIANGYINGDEBODONGFANWEIWEI285~492V。

(2)DIANLIJICHESHIFENDUANGONGDIANDE,YOUYIGEGONGDIANQUDUANHUANZHILINGYIGEQUDUANJIKUAGUOFENXIANGDUANSHIJICHEDUANDIANSHUMIAO,JICHENEIZHOUQIXINGDETINGDIANHUIZAOCHENGYASUOJIPINFANQIDONG,DUIKONGDIAOYASUOJIJIWEIBULI。YINCIZAIKUAGUOFENXIANGDUANSHI,KONGDIAOQIBIXUYOUJICHENEIDE110VZUJINGDIANLIBIANYAQIHOUGONGDIAN。

足球彩票 GENJUJISHUTIAOJIANYAOQIU,ZAIDANXIANGJIAOLIUDIANYABODONG-30%~+24%HEXUDIANCHIZUDEDIANYABODONG-30%~+20%FANWEINEI,DIANLIBIANYAQIBIXUWEIKONGDIAOQITIGONGDIANYABODONGBUCHAOGUO±5%、PINLVZAI±1%FANWEINEIBINGQIEZONGDEXIEBOHANLIANGXIAOYU15%JIBOYOUXIAOZHIDESANXIANG380VJIAOLIUDIANYA,GAIDIANLIBIANYAQIDEEDINGSHUCHURONGLIANGWEI5kVA,ZHUANHUANXIAOLVDAYU90%,BINGQIEZAI0℃~60℃GONGZUOHUANJINGXIAJUNNENGKEKAODIYUNXING。

足球彩票 1、XITONGYINGJIANJIEGOUJIGONGZUOYUANLI

足球彩票 DIANLIJICHEKONGDIAOQIDIANLIBIANYAQIDEZONGTIJIEGOUKUANGTURUTU1SUOSHI,TAYOUKONGZHIBUFENHEZHUDIANLUBUFENZUCHENG。KONGZHIBUFENYIDSPXINPIANTMS320LF2407WEIHEXIN,WAIJIAJIANCEDIANLU、XIANSHIDIANLU,KONGZHIANJIANSHURUDIANLU、LUOJIKONGZHISHUCHUDIANLUDENG。


图1 电力机车空调电力变压器的总体结构框图

1.1 ZHUDIANLU

足球彩票 DIANLIJICHEKONGDIAOQIDIANLIBIANYAQIZHUDIANLUYUANLIRUTU2SUOSHI,TAYOUZHENGLIU、LVBO、SHENGYADIANLU、TUIWANDIANLUHENIBIANQIAODENGZUCHENG。396VDEDANXIANGJIAOLIUDIANYAJINGD1~D4ZUCHENGDEZHENGLIUQIAOZHENGLIUJIL1、C1HEC2LVBOHOUSONGJISHENGYADIANLUS1、L2HED10,WEIDEDAOSANXIANG380VDEJIAOLIUDIANYA,ZAIDANXIANGJIAOLIUDIANYABODONGFANWEINEISHENGYADIANLUDESHUCHUDIANYABUDEDIYU540V。YOUYUDANXIANGJIAOLIUDIANYABODONGFANWEIJIAODA,SHENGYADIANLUDESHUCHUDIANYANANYIWENDINGZAI540V,DANGDANXIANGJIAOLIUDIANYAXIANGZHENGFANGXIANGBODONGSHI,JISHISHENGYADIANLUBUGONGZUO,ZHENGLIULVBOHOUSHUCHUDIANYAYEHUIGAOYU540V。


足球彩票图2 电力机车空调电力变压器主电路图

TUIWANDIANLUYOUS2、S3、THED5~D9DENGZUCHENG,TASHUCHUDEDIANYAKELVEDIYU540V。SHENGYADIANLUHETUIWANDIANLUDEKAIGUANGUANCAIYONGIGBT,NIBIANQIAOCAIYONGJIQUDONG、JIANCEHEBAOHUYUYITIDELIUDANYUANZHINENGGONGLVMOKUAI(IPM)。IPMSHIXIANJINDEJICHENGGONGLVQIJIAN,YOUGAOSUDIHAODEIGBTXINPIANHEYOUHUADEMENJIQUDONGJIBAOHUDIANLUGOUCHENG。YOUYUCAIYONGLENENGLIANXUJIANCEGONGLVQIJIANDIANLIUDEIGBTXINPIAN,CONGERSHIXIANGAOXIAODEGUOLIUBAOHUHEDUANLUBAOHU。BINGQIEYOUYUIPMJICHENGLEGUOREHEQIANYASUODINGBAOHUDIANLU,XITONGDEKEKAOXINGDEYIJINYIBUTIGAO。

ZAIGONGDIANQUDUANNEI,DIANLIBIANYAQIYOUAC 396VGONGDIAN;ZAIKUAGUOFENXIANGDUANSHI,DIANLIBIANYAQIYOU110VDEXUDIANCHIZUGONGDIAN。YOUYUXUDIANCHIZUSUOTIGONGDEDIANLIUYOUXIAN,ERQIEBUNENGZHANGQIGONGZUO,YIDANDIANLIJICHEJINRUKUAGUOFENXIANGDUANSHI,DIANLIBIANYAQIKAISHIJIANGYAJIANGPINZHI32HzGONGZUO。ZAICIFANGSHIXIA,GONGZUOSHIJIANCHAOGUO15sHUOZHEXUDIANCHIDIANYADIYU82VSHI,DIANLIBIANYAQIJIUTINGZHIGONGZUO。WULUNQIDONGHAISHITINGJI,DIANLIBIANYAQIDOUGONGZUOZAIBIANPINFANGSHIXIA,ERQIEBIANPINSUDUGENJUGONGZUOZHUANGTAIZIDONGGAIBIAN。ZONGHEKAOLVKAIGUANPINLVDUIDIANLIUBOXINGZHILIANGHEKAIGUANSUNHAODEYINGXIANG,SHENGYADIANLUZHONGKAIGUANGUANIGBTDEKAIGUANPINLVSHEDINGWEIl0kHz,TUIWANDIANLUZHONGKAIGUANGUANIGBTDEKAIGUANPINLVSHEDINGWEI7kHz,NIBIANQIAOZHONGIPMDEKAIGUANPINLVSHEDINGWEI2kHz。JIECHUQIK1~K3YOUTMS320LF2407XIAOXITONGGENJUSHIXUJINXINGKONGZHI。M1~M3FENBIEWEIKONGDIAOQIDEYASUOJI、SHINEITONGFENGJI、SHIWAITONGFENGJI。

1.2 DSP TMS320LF2407XIAOXITONG

DSP TMS320LF2407XIAOXITONGZHUYAOWANCHENGNIBIANQIAOPWMQUDONGXINHAODECHANSHENG、XINHAOJIANCEJIGUZHANGCHULI、GUZHANGXIANSHI、SHENGYADIANLUHETUIWANDIANLUDEKONGZHI、ANJIANJIANCEYIJILUOJIKONGZHIDENG。

BENDIANLIBIANYAQIZHONGPWMKONGZHIFANGANCAIYONGDESHISANCIXIEBOZHURUPWM(THIPWM),ZAIZHEIZHONGFANGSHIXIA,DIANLIBIANYAQISHUCHUDEXIANDIANYADEJIBOFUZHIKEYIDADAONIBIANQIAOMUXIANDIANYA,TABIZHENGXIANPWMDEMUXIANDIANYALIYONGLVTIGAOLE15%。THIPWMSHILIYONGSANXIANGXITONGZHONGXIANDIANYAJUYOUZIDONGXIAOCHUXIANGDIANYAZHONG3k(k=1,2,3……)CIXIEBODENENGLI,RENWEIDIZAISANXIANGDIAOZHIJIZHUNZHENGXIANBOZHONGZHURUYIDINGFENLIANGDE3kCIXIEBO,CONGERJIANGDILEDIAOZHIBOFENGZHI,BIMIANGUODIAOZHI。

信号检测包括是否跨过分相段、逆变桥母线电压、蓄电池电压是否低于82V以及各种故障信号。跨过分相检测判断是否有单相396V,单相交流396V经过一个小型隔离变压器整流、滤波和比较后作为一个开关量送给DSP。一旦检测到电力机车进入分相段,DSP立即起动推挽电路工作。采用电压传感器检测逆变桥母线电压,得到的模拟信号送给DSP TMS320LF2407的A/D转换器,用它来调整THIPWM的调制比M,使电力变压器输出电压稳定。在进入分相段时,一旦检测到蓄电池电压低于82V,电力变压器立即停止工作。各种故障信号包括IPM的故障输出、逆变桥的过流、逆变桥母线电压过压、欠压、升压管短路、过流、推挽管短路、过流、110V过压、欠压和电力变压器过热等,所有这些故障信号都要送给DSP用于LED显示,逆变桥母线电压过压、欠压、110V过压、欠压由DSP来处理,升压管和推挽管的故障信号经DSP处理后决定升压电路和推挽电路的通断,其他故障信号送给DSP的功率驱动保护中断输入引脚PDPINT。
足球彩票 升压电路和推挽电路的控制,即是控制升压管和推挽管的通断。由于DSP2407***多可输出16路PWM信号,因此不再需要添加外部PWM,大大简化了系统的硬件设计,降低了成本。升压管S1的控制信号为T3PWM,开关频率设定为l0kHz;推挽管S2、S3的控制信号为T4PWM,开关频率设定为7kHz。

KONGZHIANJIANZHUYAOYOUQIDONG/TINGZHIXUANZE、ZIDONG/SHOUDONGXUANZE、TONGFENG/ZHILENGXUANZEDENG。GENJUCAOZUOXUANZEHEKONGDIAOQIDEGONGZUOGUOCHENG,DSP TMS320LF2407JINXINGBUTONGDELUOJIKONGZHI。

1.3 THIPWMBOXINGDESHUZIHUASHIXIAN

足球彩票 LIYONGDSP TMS320LF2407DEEVMOKUAIZHONGDEBIJIAODANYUANLAICHANSHENGTHIPWMBOXINGFEICHANGYIYUSHUZIHUASHIXIAN。JIANGTONGYONGDINGSHIQIDEJISHUMOSHISHEZHIWEILIANXUZENG/JIANJISHUMOSHI,CHANSHENGDUICHENGDEPWMBOXING,QIZHONGTONGYONGDINGSHIQIDEJISHUGUOCHENGJIUXINGCHENGLEYIGE“XUNI”DESANJIAOBO,RUTU3SUOSHI。SANJIAOJIZHUNBODEBIAODASHIRUSHI(1)~SHI(3)SUOLIE。


式中:TxPR/2对应逆变桥输出电压为零;
M为调制比。


足球彩票图3 通用定时器Tx的计数过程

vu、vv、vwFENBIESONGJIBIJIAOJICUNQICMPR1、CMPR2、CMPR3(HUOCMPR4、CMPR5、CMPR6)。BIJIAOJICUNQICMPRXDEZHIJUEDINGLESANJIAOJIZHUNBOHEZAIBOSANJIAOBODEJIAODIAN,ZAIJIAODIANCHUPWMXHEPWMX+1DESHUCHUZHUANGTAIBEIGAIBIAN,YOUCIDEDAOTHIPWMDIANLIBIANYAQIDEKAIGUANMOSHI。

2、XITONGRUANJIANSHEJI

足球彩票 DIANLIJICHEDIANLIBIANYAQIDEKONGZHIRUANJIANZHUYAOYOUXITONGZHUCHENGXU、PWMZHONGDUANFUWUCHENGXU、DINGSHIQIYICHUZHONGDUANFUWUCHENGXU、PDPINTZHONGDUANFUWUCHENGXUHEA/DZHUANHUANWANCHENGZHONGDUANFUWUCHENGXUDENG5BUFENZUCHENG。ZHUCHENGXUZHUYAOWANCHENGCANSHUDESHEZHIHEGEGONGNENGBUJIANDECHUSHIHUAYUNXINGZHUANGTAIHECAOZONGANJIANDEJIANCE、GUOYAHEhttp://guyuan.glambyanam.com/QIANYACHULIYIJIKONGDIAOQIDELUOJIKONGZHIDENG;PWMZHONGDUANFUWUCHENGXUZHUYAOWANCHENGSANXIANGPWMKUANDUJISUAN、DIAOZHIBIMDEDIAOZHENGHEBIANPINGUOCHENGDECHULIDENG;DINGSHIQIYICHUZHONGDUANFUWUCHENGXUZHUYAOWANCHENGKONGDIAOQILUOJIKONGZHISUOXUSHIXUDEDINGSHI,BAOKUO50s、30s、15s、10sDENGDEDINGSHI;PDPINTZHONGDUANFUWUCHENGXUYONGYUZHUYAOGUZHANGDECHULIJIXIANSHI;A/DZHUANHUANWANCHENGZHONGDUANFUWUCHENGXUYONGLAIWANCHENGNIBIANQIAOMUXIANDIANYADEA/DZHUANHUANHELVBO。

3、JIEYU

该电力变压器经过实验证明各项技术指标都达到了设计的要求,利用功率谐波分析仪测得输出电压的波动不超过±2%,总的谐波含量不超过2%。经过两年在电力机车上长期稳定可靠的运行,证明该方案设计合理,抗干扰能力强,能满足<

上一条: S11油浸式电力变压器的配电装置是如何进行工作的? 下一条: 电力变压器的试验操作

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