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H KHOA H p c CONG NGHE MOT SO UAH DE KV THUAT TROMG HOP B A THi MOHIEm RO LE OA C H O G nilN6 Le Duy Nhln Trudng Cao ddng Diin lUc mien Trung Tdm t i t Ph6n Idn cdc hap bd thi nghiim ra le hiin nay di[.]
H KHOA H p c - CONG NGHE MOT SO UAH DE KV THUAT TROMG HOP B A THi MOHIEm RO LE OA C H O G nilN6 Le Duy Nhln Trudng Cao ddng Diin lUc mien Trun Tdm t i t : Ph6n Idn cdc hap bd thi nghiim le hiin di/ac thiA ki dUa trin viic sCr dung dc bien dp diin tCf Chung c6 tAi diem Id Idm viic tin cdy, d6 bin cao nhung nhuac diim l&n nhat Id khdng the dap (hig di/ac cdcyiu cau thi nghiem cd liin quan din tdn s6, gicpha, s6ng hdi Dindngcaokhd nang thi nghiem rale vd nhdt Id ti/ddng hda cdng tdc thi nghiim, bdo cdo trinh bdy nguyin t&c thiic hiin hopbd thi nghiim le da chvtc ndng vdi phSn diiu khUn svfdung FPGA-Cydone U-BP2C35672C6 vd dsPIC30F4011 Viec sCr dung FPGA vd dsPIC cho phip diiu khiin song song nhiiu kinh ddng diin, diin dp hoat dong doc Idp vepha, tdn so vd bien Kit qud thvfc hlin cho thdy hap bd thi nghiim ndy cd thi ddp uhg hau hit cdc yeu cau th&nghiem cua rale ky thudt sd 1.GldlTHl£u Thi nghiem b i o ve ro le ddng mdt vai trd rat quan trpng d i n h gia kha nang l l m viec cua d c b i o ve rd le he thdng dien [3] Nguyen t i e chung cua thf nghiem la dUa vIo rd le d c dai lUOng ddng dien, dien ap, tan sd va gdc pha theo elc muc t i l u thi nghiem CIc muc tieu l y thupc vIo tPng loai b i o ve va k h i nang phIt hien sp cd ePa chung Cac hdp bd thi nghiem rO le sP dung bien ap d i l u chinh gap mdt sd bat Idi thuc hiln d c thf nghiem cd liln quan d i n t i n sd, gdc pha Hdn nPa d c hpp bd thi nghiem truyin thdng khdng cd k h i nang thi nghiem b i o v l tan sd v l d c hang mue thi nghiem cd lien quan d i n sdng hIi [3] Hpp bd thf nghiem ro le da chUc nang vdi t h i l t k l dUa tren nen t i n g FPGA cho phep thpc hien nhieu phep thp linh hoat hon, cd the tfch hpp nhieu gili phIp tpddng hda cdng t i e thi nghiim SCf o6 K H I CUA HOP B THf 0-250 V xoay chieu v l dPdc d I u ndi d i n d e bd tao ddng d i l n hoac tao ap thi nghiem Mdt qua trinh thf n g h i i m dPpc thpc hien bIng d c h dilu chinh ddng di^n hoac dien ap den g i l trj mong mudn, sau ngIt dien vl t i l n hanh ddng dien trd lai cung luc vdi viec khdi ddng kenh thdi gian, Thdi gian tie ddng cua b i o v l dupe tinh k l tP ddng dien (vcri g i l trj dat trade) cho den b i o ve t i e ddng Khdi thdi gian se gUi tin hieu nglt ngudn dien khdi mach b i o ve d l t i c ddng Odi vdi d c thi nghiem cd lien quan den gdc pha giUa hai dong dien hole giPa ddng dien v l dien I p Vile tao gdc lleh dUdc thue hiln thdng qua t h i l t bi dich pha hole b i l n I p dieu chinh duoc dau ndi theo d c so dd die biet [2] Bienap dieu chinh Nguon cung cap r-+ Tao dong ' • Taoap Doi nigng thi Nghiem , Do thoi gian NGHI$M RaiE Bien I p dieu chinh cd nhiem vu thay ddi dien ap ngd khoang 241 Dien Jt D&i song Hinh 1: So khdi cua htfp bd t h i nghiem rcr le mdt pha KHOA HQC • CONG NGHE Q HOP B O T H I N G H I E M R O L E D A C H C C N A N G Nguon nghjch luu mgt pha Ngudn nghich liru mot pha \ / D6i tirpng thu Nguon nghich liru mpt pha *i Nguon nghich luu mpl pha j« Nguon nghich luu mpt pha / / T Dieu khien pha, tan so, bien \ Do thoi gian * \ dsPIC t - • \ Do luong dong, ap, cong sua! t Nguon cung cap Nguon nghich luu m$t pha -• t Giao tiep nguoi dung Dong bo thai gian Hinh 2: Sddo khdi hdp bd thi nghiem rd le da churc nang Hpp bd thi nghiem ro le da ehPc nang sP dpng ngudn nghich luu sdng sine viec tao tfn hieu thf nghiem CIc dai lupng ddng, ap, tan sd va gdc pha dupe d i l u khiln va g i l m sit bang FPGA ket hpp vdi vi dieu khien tin hieu sd 16 bit cua Microchip - dsPIC30F4011 Hinh la so khdi ePa hop bd thi nghiem 3.1 Dieu khien ngudn thi nghiem vdi FPGA 3.1.1 Nghjch lifu dieu che rong xung PWM Ky t h u l t dieu c h l rdng xung PWM cang duac mP rdng Png dung tren nhilu ITnh vUc Mdt Ung dung ePa ky thult la dieu khien thdi gian ddng md cap transistor chuyen mach theo mdt quy luat cho trudc (chudi xung cd cung bien dp nhUng dp rdng khIc nhau) [1] dupe trinh bay nhu hinh va hinh ^ S DA-I- UV2 •o io A Ud ^_ \1 ?^Hinh 3: Nghich luu PWM mot pha Bien & D&i song\ 25 E] KHOA HOC - CONG NGHi; / -V' i8r*> Hinh 4: D i i n ip ciia b6 nghjch liAi 3.1.2 Thuc hitn PWM trin FPOA Tfn hieu iilnh sin cliuSn 10 bit auoc lly mSu tai 512 efilm v i liiu trudc vSo b6 niicj cua FPGA Vlec truy xuSt M ileu duoc thuc hiSn thong qua bo d i m iuy tuyen vffl bu6c nhSy a DOt liSu ngo iS chu6l Sine-PCM daoc dua den bo dilu che rong xung Tan s6 ciia dien Sp duoc quylt dinh bdi tan sd ciocic dUa vJo b6 cong luy t u y I n (accumulator) Oe tao goc pha bien d6i, da lieu duoc dua viio bo cong g6c pha sau db mfli truy xuat v j o bSng dCt lieu sine BiSn ap ngo dupc dieu chinh bSng cSch thay ddi he sd chia trudc l(hi chuyin dO lieu d i n bd PWIW Hop bo thi nghiem ro ie c i n sCtdung kenh dong dien v i dien Sp ddc lap do so dd tren hinh 3.4thich hpp thuc hiĐn tren FPGA PHASE_RH3_EN D " stƠ32 generator_reg16 Hinh 5: Giln dd mUc ghi Sine-PWM thuc hign tren Active-HDL Name p Clk ^^^^^^^ã^ãã1^^^^^^^^^^^^^^^^^ ô ™ , ™ ™ »","»."-.— ecla PCM