Thiết kế bộ nghịch lưu hòa năng lượng mặt trời lên lưới điện quốc gia

B GIO DC V O TO TRNG I HC S PHM K THUT THNH PH H CH MINH LUN VN THC S T QUANG MINH THIT K B NGHCH LU HềA NNG LNG MT TRI LấN LI IN QUC GIA NGNH: THIT B MNG V NH MY IN - 605250 S K C0 Tp H Chớ Minh, thỏng 11/2012 B GIO DC V O TO TRNG I HC S PHM K THUT THNH PH H CH MINH LUN VN THC S T QUANG MINH THIT K B NGHCH LU HềA NNG LNG MT TRI LấN LI IN QUC GIA NGNH: THIT B MNG V NH MY IN - 605250 Tp H Chớ Minh, thỏng 11/2012 B GIO DC V O TO TRNG I HC S PHM K THUT THNH PH H CH MINH LUN VN THC S T QUANG MINH THIT K B NGHCH LU HềA NNG LNG MT TRI LấN LI IN QUC GIA NGNH: THIT B MNG V NH MY IN - 605250 Hng dn khoa hc: TS TRNG VIT ANH Tp H Chớ Minh, thỏng 10/2012 Lun tt nghip Lý lch khoa hc Lí LCH KHOA HC I Lí LCH S LC H v tờn: T Quang Minh Gii tớnh: Nam Ngy, thỏng, nm sinh: 15/10/1988 Ni sinh: Bn Tre Quờ quỏn: xó Bỡnh Hũa, huyn Ging Trụm, tnh Bn Tre Dõn tc: Kinh a ch liờn lc: xó Bỡnh Hũa, huyn Ging Trụm, tnh Bn Tre in thoi: 0975120903 E-mail: tqminh58@gmail.com II QU TRèNH O TO i hc: H o to: Chớnh qui Thi gian o to t: 2006 n nm 2010 Ni hc (trng, thnh ph): i hc Cn Th, Thnh ph Cn Th Ngnh hc: K thut in Tờn lun tt nghip: Kho sỏt v ci to li in trung th 22kV huyn Ging Trụm tnh Bn Tre Thi gian & ni bo v lun tt nghip: 4/2010 ti i hc Cn Th Ngi hng dn: Ths Nguyn Duy Phng III QU TRèNH CễNG TC CHUYấN MễN K T KHI TT NGHIP I HC Thi gian Ni cụng tỏc Cụng vic m nhim 07/2010 08/2010 Cao ng Ngh Cn Th Giỏo viờn GVHD: TS Trng Vit Anh Trang i HVTH: T Quang Minh Lun tt nghip Li cam oan LI CAM OAN Tụi cam oan õy l cụng trỡnh nghiờn cu ca tụi Cỏc s liu, kt qu nờu lun l trung thc v cha tng c cụng b bt k cụng trỡnh no khỏc Tp H Chớ Minh, ngy 24 thỏng 09 nm 2012 Ngi cam oan T Quang Minh GVHD: TS Trng Vit Anh Trang ii HVTH: T Quang Minh Lun tt nghip Li cm n LI CM N Trc ht, em xin c by t lũng bit n chõn thnh v sõu sc nht ca em gi n Tin S Trng Vit Anh, ngi Thy ó tn ty hng dn em sut quỏ trỡnh nghiờn cu hon thnh lun ny Chõn thnh cm n quớ thy cụ Trng i hc S Phm K Thut TP.HCM v Trng i Hc Bỏch khoa TP.HCM ó ging dy em sut hai nm hc V cui cựng, xin cm n n tt c cỏc anh ch, bn bố ó giỳp tụi v tinh thn, vt cht v cụng sc sut quỏ trỡnh hc cng nh hon thnh lun ny Xin trõn trng cm n Tp H Chớ Minh, ngy 24 thỏng 09 nm 2012 T Quang Minh GVHD: TS Trng Vit Anh Trang iii HVTH: T Quang Minh Lun tt nghip Túm tt TểM TT Trong b sc ca xe in, li in s cung cp nng lng cho pin thụng qua b sc i vi li in ba pha, b chnh lu ba pha l cu trỳc quan trng cho b sc Kh nng bm cụng sut trc tip v tớnh u vit ca h s cụng sut l c tớnh ca phng ỏn xut c trỡnh by lun ny iu khin ta theo in ỏp l l mt nhng phng phỏp da theo h ta d-q Phng phỏp iu khin ta ỏp cho b nghch lu ba pha c thit k v mụ phng Vic mụ phng ny c thc hin bng phn mm Matlab/Simulink Vic thit k phõn lp dũng in iu khin kt hp vi phng phỏp rng xung dựng iu khin b nghch lu Kt qu mụ phng c trỡnh by v so sỏnh vi vic nghiờn cu lý thuyt Mụ hỡnh s tip tc phỏt trin ỏp ng vi nhng thay i ca mụi trng GVHD: TS Trng Vit Anh Trang iv HVTH: T Quang Minh Lun tt nghip Túm tt ABSTRACT In a plug-in hybrid electric vehicle, the utility grid will charge the vehicle battery through the battery charger For a three-phase grid supply voltage, threephase boost rectifiers are a commonly used scheme for chargers Directional power transfer capability and unit power factor operation are interesting features that can be achieved by the method proposed in this thesis The Voltage Oriented Control is one of these methods based on high performance dq-coordinate controllers The Voltage Oriented Control method for a three-phase inverter have been designed and simulated The system simulation has been done using Matlab/Simulink software Feedforward decoupled current control has been designed along with Pulse Width Modulation scheme to control the inverter The simulation results have been presented and control system performance evaluated in theoretical studies result This model is developing in response to environmental changes GVHD: TS Trng Vit Anh Trang v HVTH: T Quang Minh Lun tt nghip Mc lc MC LC Trang Trang ta Quyt nh giao ti Xỏc nhn ca cỏn b hng dn Lý lch khoa hc i Li cam oan .ii Li cm n iii Túm tt iv Mc lc vi Danh sỏch cỏc ch vit tt viii Danh sỏch cỏc bng ix Danh sỏch cỏc hỡnh x Ti liu tham kho xiii Chng Tng quan v ti 01 1.1 Tng quan v lnh vc nghiờn cu, cỏc kt qu nghiờn cu v ngoi nc ó cụng b 01 1.2 Mc ớch ca ti 04 1.3 Nhim v ca ti v gii hn ti 04 1.4 Phng phỏp nghiờn cu 04 1.5 im mi ca lun 05 1.6 Giỏ tr thc tin ca lun 05 1.7 B cc ca lun 05 Chng Phng phỏp tip cn 06 2.1 Mụ hỡnh pin mt tri 06 2.2 B chuyn i DC/DC boots converter 10 2.3 im lm vic cc i ca pin mt tri 13 2.4 Cỏc phng phỏp tỡm im cc i ca pin mt tri 17 2.4.1 Phng phỏp in ỏp hng s 17 GVHD: TS Trng Vit Anh Trang vi HVTH: T Quang Minh Lun tt nghip Mc lc 2.4.2 Phng phỏp P&O (Perturb and Observe) 18 2.4.3 Phng phỏp InC (Incremental Conductance) 19 2.4.4 Nhc im ca cỏc phng phỏp P&O v InC 21 2.5 Xõy dng mụ hỡnh pin mt tri Matlab/Simulink 22 Chng Phng ỏn xut 27 3.1 Phng phỏp Voltage Oriented Control 27 3.1.1 Chuyn ta (a, b, c) sang (d, q) v ngc li 30 3.1.2 Cỏc thnh phn ca b nghch lu theo phng phỏp VOC 32 3.1.2.a Khi h thng 32 3.1.2.b Vũng khúa pha PLL 33 3.1.2.c B iu khin dũng 34 3.1.3 u nhc im ca phng phỏp VOC 36 3.2 Thụng s iu khin 36 3.2.1 K thut iu khin PID 36 3.2.2 Dóy thut by n Particle Swarm Optimization 39 Chng Kt qu mụ phng 43 4.1 S mụ hỡnh trờn Matlab/Simulink 43 4.2 Kt qu mụ phng 44 4.2.1 Khi Id* = (A), Iq*= (A) 44 4.2.2 Khi Id* = 10 (A), Iq*= (A) 46 4.2.3 Khi Id* = 12 (A), Iq*= (A) 48 4.2.4 Khi Id* = 14 (A), Iq*= (A) 50 4.3 Nhn xột 53 Chng Kt lun v xut 54 5.1 Kt lun 54 5.2 Hn ch v hng phỏt trin ca ti 54 5.2.1 Hn ch 54 5.2.2 Hng phỏt trin ca ti 54 GVHD: TS Trng Vit Anh Trang vii HVTH: T Quang Minh Lun tt nghip Danh sỏch cỏc ch vit tt DANH SCH CAC CH VIấT TT MPPT: dũ im cụng sut cc i NOCT: nhit hnh bỡnh thng MPP: im cụng sut cc i P&O: xỏo trn v quan sỏt InC: tng in khỏng VOC: phng phỏp ta theo in ỏp PLL: vũng khúa pha PSO: dóy thut by n THD: h s mộo dng GVHD: TS Trng Vit Anh Trang viii HVTH: T Quang Minh Lun tt nghip Danh sỏch cỏc bng DANH SCH CC BNG Trang Bang 2.1 Thụng s ca pin mt tri thng mi MSX60 ti kW/m2, 250C 25 Bang 4.1 Tng hp thụng s b nghch lu bc x thay i 56 GVHD: TS Trng Vit Anh Trang ix HVTH: T Quang Minh Lun tt nghip Danh sỏch cỏc hỡnh DANH SCH CC HèNH Trang [1] Hỡnh 1.1 Phõn b tng s gi nng thỏng 1, 2, nm 2011 Vit Nam 02 Hỡnh 1.2 Bc x mt tri ti ba thnh ph tiờu biu nm 2010[3] 02 Hỡnh 2.1 Mch in tng ng ca pin mt tri 06 Hỡnh 2.2 Mụ hỡnh pin mt tri lý tng 07 Hỡnh 2.3 Mụ un pin mt tri 08 Hỡnh 2.4 c tuyn I-V vi cỏc bc x khỏc 09 Hỡnh 2.5 c tuyn P-V vi cỏc bc x khỏc 10 Hỡnh 2.6 S nguyờn lý mch boost 11 Hỡnh 2.7 Mch in S úng 11 Hỡnh 2.8 Dng súng in ỏp v dũng in trờn cun dõy L S úng 11 Hỡnh 2.9 Mch in S m 12 Hỡnh 2.10 Dng súng in ỏp v dũng in trờn L S m 12 Hỡnh 2.11 c tuyn I-V, P-V ca pin mt tri vi im cụng sut cc i 14 Hỡnh 2.12 Cỏc im MPP di cỏc iu kin mụi trng thay i 14 Hỡnh 2.13 S ca h thng MPPT tiờu biu 15 Hỡnh 2.14 B DC/DC giỳp hỳt cụng sut cc i t pin mt tri 16 Hỡnh 2.15 Gii thut MPPT da trờn cỏc in ỏp hng s 18 Hỡnh 2.16 c tớnh ca pin mt tri 18 Hỡnh 2.17 Gii thut P&O 19 Hỡnh 2.18 dc (dP/dV) ca PV 20 Hỡnh 2.19 Gii thut InC 21 Hỡnh 2.20 Bc x thay i v ỏp ng ca P&O v InC 22 Hỡnh 2.21 Trng hp phng phỏp P&O phỏt hin sai 22 Hỡnh 2.22 Mụ hỡnh pin mt tri c xõy dng Matlab/Simulink 23 Hỡnh 2.23 Mụ hỡnh pin mt tri thu gn 24 Hỡnh 2.24 Mụ hỡnh pin mt tri dng vt lý 24 GVHD: TS Trng Vit Anh Trang x HVTH: T Quang Minh Lun tt nghip Danh sỏch cỏc hỡnh Hỡnh 2.25 Mụ hỡnh pin mt tri dng vt lý ni ti 24 Hỡnh 2.26 Bng thụng s u vo ca pin mt tri 25 Hỡnh 2.27 c tuyn I-V, P-V vi cỏc bc x khỏc (Nhit pin 25oC) 26 Hỡnh 2.28 c tuyn I-V, P-V vi nhit hnh khỏc .26 Hỡnh 3.1 S kt ni b nghch lu vo li phõn phi 27 Hỡnh 3.2 S nguyờn lý hot ng b nghch lu theo phng phỏp VOC 28 Hỡnh 3.3 S tớnh toỏn giỏ tr Id* v Iq* 30 Hỡnh 3.4 H trc ta c nh v h ta quay 31 Hỡnh 3.5 Mụ hỡnh h thng 32 Hỡnh 3.6 Cu trỳc b PLL 33 Hỡnh 3.7 S Matlab/Simulink ca b PLL 34 Hỡnh 3.8 S b iu khin dũng 35 Hỡnh 3.9 Gin vecto ca dũng in v in ỏp phng phỏp VOC 35 Hỡnh 3.10 S hot ng b iu khin PID 37 Hỡnh 3.11 nh hng ca KP lờn ỏp ng h thng (khi KI v KD khụng i) 38 Hỡnh 3.12 nh hng ca KI lờn ỏp ng h thng (khi KP v KD khụng i) 38 Hỡnh 3.13 nh hng ca KD lờn ỏp ng h thng (khi KP v KI khụng i) 39 Hỡnh 4.1 Cụng sut tỏc dng ngừ cng bc x 0.2 kW/m2 43 Hỡnh 4.2 Cụng sut phn khỏng ngừ cng bc x 0.2 kW/m2 44 Hỡnh 4.3 in ỏp ngừ cng bc x 0.2 kW/m2 44 Hỡnh 4.4 Dũng in ngừ cng bc x 0.2 kW/m 45 Hỡnh 4.5 Tớn hiu THD dũng in ngừ cng bc x 0.2 kW/m2 46 Hỡnh 4.6 Cụng sut tỏc dng ngừ cng bc x 0.4 kW/m2 46 Hỡnh 4.7 Cụng sut phn khỏng ngừ cng bc x 0.4 kW/m2 47 Hỡnh 4.8 in ỏp ngừ cng bc x 0.4 kW/m2 47 Hỡnh 4.9 Dũng in ngừ cng bc x 0.4 kW/m2 48 Hỡnh 4.10 Tớn hiu THD dũng in ngừ cng bc x 0.4 kW/m2 48 Hỡnh 4.11 Cụng sut tỏc dng ngừ cng bc x 0.6 kW/m 49 Hỡnh 4.12 Cụng sut phn khỏng ngừ cng bc x 0.6 kW/m2 49 GVHD: TS Trng Vit Anh Trang xi HVTH: T Quang Minh Lun tt nghip Danh sỏch cỏc hỡnh Hỡnh 4.13 in ỏp ngừ cng bc x 0.6 kW/m2 50 Hỡnh 4.14 Dũng in ngừ cng bc x 0.6 kW/m2 50 Hỡnh 4.15 Tớn hiu THD dũng in ngừ cng bc x 0.6 kW/m2 51 Hỡnh 4.16 Cụng sut tỏc dng ngừ cng bc x 0.8 kW/m2 51 Hỡnh 4.17 Cụng sut phn khỏng ngừ cng bc x 0.8 kW/m2 52 Hỡnh 4.18 in ỏp ngừ cng bc x 0.8 kW/m2 52 Hỡnh 4.19 Dũng in ngừ cng bc x 0.8 kW/m2 53 Hỡnh 4.20 Tớn hiu THD dũng in ngừ cng bc x 0.8 kW/m2 53 Hỡnh 4.21 Cụng sut tỏc dng ngừ cng bc x kW/m2 54 Hỡnh 4.22 Cụng sut phn khỏng ngừ cng bc x kW/m2 54 Hỡnh 4.23 in ỏp ngừ cng bc x kW/m2 55 Hỡnh 4.24 Dũng in ngừ cng bc x kW/m2 55 Hỡnh 4.25 Tớn hiu THD dũng in ngừ cng bc x kW/m2 56 GVHD: TS Trng Vit Anh Trang xii HVTH: T Quang Minh Lun tt nghip Ti liu tham kho TI LIU THAM KHO TING VIT [1] Vin khớ tng thy vn: http://www.imh.ac.vn/ [2] First Solar Vit Nam d ỏn cụng ngh cao u nm 2011, http://www.hepza.hochiminhcity.gov.vn [3] ng ỡnh Thng, C s nng lng mi v tỏi to, Nh xut bn khoa hc k thut, 2006 [4] www.wikipedia.org TING NC NGOI [5] Syafrudin Masri, Pui-Weng Chan Development of a microcontroller based boost converter for photovoltaic system, ISSN 1450-216X Vol.41 No.1 (2010) [6] Ahmed A A Hafez Simple maximum power point contronller for single phase grid connected PV system Cairo University, Egypt, December 19-21, 2010, paper ID 123 [7] VINCIUS S LACERDA, PEDRO G BARBOSA E HENRIQUE A C BRAGA NAEP, Nỳcleo de Automaỗóo e Eletrụnica de Potờncia, Universidade Federal de Juiz de Fora, Brasil Caixa Postal 422, 36001-970, Juiz de Fora, MG Brasil A Single-Phase Single-Stage, High Power Factor Grid-Connected PV System, with Maximum Power Point Tracking [8] Marcio Mendes Casaro*, Denizar Cruz Martins Power Electronics Institute, Federal University of Santa Catarina Grid-Connected PV System: Introduction to Behavior Matching [9] A.P.S Ramalakshmi Comparision of solar panel power under varying load and irradiance conditions GVHD: TS Trng Vit Anh Trang xiii HVTH: T Quang Minh Lun tt nghip [10] Ti liu tham kho Jing Li , Fang Zhuo , Xianwei Wang , Lin Wang , Song Ni A Grid- Connected PV System with Power Quality Improvement Based on Boost + DualLevel Four-Leg Inverter [11] Samatcha Phuttapatimok, Anawach Sangswang, Member, IEEE, and Krissanapong Kirtikara Effects on Short Circuit Level of PV Grid-Connected Systems under Unintentional Islanding [12] Fei Wang, Chengcheng Zhang, Zengqiang Mi Anti-islanding Detection and Protection for Grid connected PV System Using Instantaneous Power Theory [13] Fei Wang, Zengqiang Mi Passive Islanding Detection Method for Grid Connected PV System 2009 International Conference on Industrial and Information Systems [14] M.B Bana Sharifian Single-Stage grid connected photovoltaic system with Reactive power control and adaptive predictive current controller Journal of applied sciences (8): 1593-1509, 2009 [15] N Hamrouni and A.Cherif Modelling and control of a grid connected photovoltaic system Revue des Energies Renouvelables Vol 10 No3 September 2007) [16] Roberto F Coelho, Filipe M Concer, Denizar C Martins A MPPT Approach Based on Temperature Measurements Applied in PV Systems Electrical Engineering Departament, Power Electronics Institute, Federal University of Santa Catarina, P.O 5119 - Florianúpolis, SC 88040-970, Brazil [17] Vocational School of Technical Studies, Marmara University, Kadkoy, 34722 Istanbul, Turkey Recent Developments in MaximumPower Point Tracking Technologies for Photovoltaic Systems [18] Ibrahim, H E.-S A and Houssiny, F F., Microcomputer Controlled Buck Regulator for Maximum Power Point Tracker for DC Pumping System Operates from Photovoltaic System, Proceedings of the IEEE International Fuzzy Systems Conference, August 22-25,Vol 1, pp 406-411 (1999) GVHD: TS Trng Vit Anh Trang xiv HVTH: T Quang Minh Lun tt nghip [19] Ti liu tham kho Jawad Ahmad, and Hee-Jun Kim A Voltage Based Maximum Power Point Tracker for Low Power and Low Cost Photovoltaic Applications World Academy of Science, Engineering and Technology 60 2009 [20] Masoum, Mohammad A S Dehbonei, Hooman, Design, Construction and Testing of a Voltage-based Maximum Power Point Tracker (VMPPT) for Small Satellite Power Supply SSC99-XII-7 [21] Enslin, J H R and Snyman, D B., Simplified Feed-Forward Control of the Maximum Power Pont in PV Installations Proceedings of the IEEE International Conference on Power Electronics Motion Control, Vol.1, pp 548-553 (1992) [22] Sree Manju B, Ramaprabha R, Mathur B.L Design and Modeling of Standalone Solar Photovoltaic Charging SystemInternational Journal of Computer Applications (0975 8887) Volume 18 No.2, March 2011 [23] Mayssa Farhat, Lassõad Sbita Advanced Fuzzy MPPT Control Algorithm for Photovoltaic Systems Science Academy Transactions on Renewable Energy Systems Engineering and Technology Vol 1, No 1, March 2011 [24] Mohamed Salhi, Rachid El-Bachtri Maximum Power Point Tracker using Fuzzy Control for Photovoltaic System International Journal of Research and Reviews in Electrical and Computer Engineering (IJRRECE) Vol 1, No 2, June 2011, ISSN: 2046-5149 [25] R Belaidi, M Fathi, A Haddouche, A Chikouche, G Mohand Kaci and Z Smara, Study and Simulation of a Mppt controller based on Fuzzy logic controller for photovoltaic system IGEC-VI-2011-208 [26] Theodoros L Kottas, Athanassios D Karlis, New Maximum Power Point Tracker for PV Arrays Using Fuzzy Controller in Close Cooperation With Fuzzy Cognitive Networks IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL 21, NO 3, SEPTEMBER 2006 GVHD: TS Trng Vit Anh Trang xv HVTH: T Quang Minh Lun tt nghip Ti liu tham kho [27] Rym Marouani and Abdelkader Mami, Voltage Oriented Control Applied to a Grid Connected Photovoltaic System with Maximum Power Point Tracking Technique, American Journal of Applied Sciences 7, 2010, 1168-1173 [28] Sylvain Lechat Sanjuan, Voltage Oriented Control of ThreePhase Boost PWM Converters, Master of Science Thesis in Electric Power Engineering, Chalmers University of Technology, Gửteborg, Sweden, 2010 [29] Le Minh Phuong, Phan Quoc Dzung, Nguyen Minh Huy, A Three-Phase Grid-Connected Photovoltaic System with Reactive Power Control, Ho Chi Minh city University of Technology, 2012 [30] Michael Lindgren, Modeling and Control of Voltage Source Converters Connected to the Grid, Chalmers University of Technology, Gửteborg, Sweden, 1998 [31] Joóo Afonso, Carlos Couto, Jỳlio Martins, Active Filters with Control Based on the p-q Theory, IEEE Industrial Electronics Society Newsletter, vol 47, n 3, Sept 2000, ISSN: 0746-1240, pp 5-10 [32] J.J Vague Cardona, J.C Alfonso Gil, F.L Gimeno Sales, S Segui-Chilet, S Orts Grau, N Munoz Galeano, Improved Control of Current Controlled Grid Connected Inverters in Adjustable Speed Power Energies, Universidad Politecnica de Valencia, Spain [33] Graziella Giglia, Marcello Pucci, Calogero Serporta, Gianpaolo Vitale, Comparison of Control Techniques for Three-Phase Distributed Genneration Based on VOC and DPC, Institute on Intelligent System for the Automation, Palermo-Italy [34] Fatih Tagetiren M and Yun-Chia Liang, "A Binary Particle Swarm Optimization Algorithm for Lot Sizing Problem", Journal of Economic and Social Research, Vol.5 No.2, pp 1-20, 2004 [35] S J Bassi, M K Mishra, E E Omizegba, Automatic Tuning of Proportional-Intergral-Derivative (PID) GVHD: TS Trng Vit Anh Trang xvi Controler Using Particle Swarm HVTH: T Quang Minh Lun tt nghip Ti liu tham kho Opimization (PSO) Algorithm, International Journal of Artificial Intelligence & Applications (IJAIA), Vol.2, No.4, October 2011, pp 25-34 [36] S Morkos, H Kamal, Optimal Tuning of PID Controller using Adaptive Hybrid Particle Swarm Optimization Algorithm, Int J of Computers, Communications & Control, ISSN 1841-9836, E-ISSN 1841-9844, Vol VII (2012), No (March), pp 101-114 [37] Mahmud Iwan Solihin, Lee Fook Tack and Moey Leap Kean, Tuning of PID Controller Using Particle Swarm Optimization (PSO), Proceeding of the International Conference on Advance Science Engineering and Information Technology 2011, Malaysia, 14-15 January 2011 [38] http://www.mathworks.com/ GVHD: TS Trng Vit Anh Trang xvii HVTH: T Quang Minh Lun tt nghip Chng 1: Gii thiu Chng TNG QUAN V TI 1.1 Tng quan v lnh vc nghiờn cu, cỏc kt qu nghiờn cu v ngoi nc ó cụng b Ngy nay, nhu cu s dng cỏc ngun nng lng tỏi to ang tng lờn mnh m bi cỏc ngun nng lng húa thch ang dn cn kit v chỳng gõy nhng hu qu v mụi trng nh hiu ng nh kớnh, l lt Trong cỏc ngun nng lng tỏi to nh nng lng sinh khi, nng lng a nhit, giú, thy in nh, nng lng mt tri ang dn tr nờn rt ph bin bi vỡ chỳng cú nhiu u im phng phỏp phỏt in, phớ bo dng thp, an ton cho ngi s dng, khụng gõy ụ nhim mụi trng v c bit ngun ti nguyờn ny cc k ln Vit Nam, v trớ a lý ó u i cho chỳng ta mt ngun nng lng tỏi to vụ cựng ln, c bit l nng lng mt tri Nm gn ng xớch o, Vit Nam nm khu vc cú cng bc x mt tri tng i cao, nng lng bc x mt tri trung bỡnh t n 5kWh/m2 mi ngy[1] GVHD: TS Trng Vit Anh Trang HVTH: T Quang Minh S K L 0 [...]... Improved Control of Current Controlled Grid Connected Inverters in Adjustable Speed Power Energies, Universidad Politecnica de Valencia, Spain [33] Graziella Giglia, Marcello Pucci, Calogero Serporta, Gianpaolo Vitale, Comparison of Control Techniques for Three-Phase Distributed Genneration Based on VOC and DPC, Institute on Intelligent System for the Automation, Palermo-Italy [34] Fatih Tagetiren M