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O sistema desenvolvido e descrito nesta dissertação pode sofrer algumas alterações de modo a melhorar o seu desempenho, tanto em termos de hardware como em termos de software.

Na parte do hardware, o sistema pode ser compactado, juntando algumas placas. Por exemplo, pode-se juntar as placas de condicionamento de sinal numa só. Também se pode desenvolver uma fonte com tensões constantes de -15 V, -5 V, 0 V 3,3 V e 15 V que fique ligada ao barramento CC (Corrente Contínua) de modo a alimentar todo o hardware, e que no futuro possa ser utilizada com uma bateria de serviço num veículo

elétrico. A placa que contém o FPGA pode ser compactada numa placa que contenha apenas os recursos necessários para o controlador do motor, de modo que possa ser inserida num veículo elétrico.

Também se pode desenvolver um conversor CC-CC que permita aproveitar eficazmente a energia regenerativa e gerir o SOC (State-of-Charge) do sistema de armazenamento de energia, sendo necessário, para isso, observar previamente o efeito da travagem regenerativa, acoplando o motor a uma carga com inércia suficiente para isso.

A nível de software, os ganhos dos controladores PI (Proporcional-Integral) podem ser ajustados de modo a diminuir ou eliminar o overshoot da velocidade e estabilizar a amplitude das tensões e correntes em regime permanente. Quanto ao controlador, podem ser feitas várias otimizações no código Verilog de modo a diminuir os recursos utilizados e a aumentar a velocidade de processamento do controlador FOC. Por exemplo, pode-se utilizar sempre a representação em complemento para dois das variáveis, ao invés de se estar constantemente a passar de sinal e amplitude para esse modo de representação, e vice-versa, nas operações matemáticas. O número de estados de algumas máquinas de estados também pode ser reduzido.

Referências

[1] J. Dixon, “Energy storage for electric vehicles,” in 2010 IEEE International Conference on

Industrial Technology, 2010, pp. 20–26.

[2] A. Khaligh and Z. Li, “Battery , Ultracapacitor , Fuel Cell , and Hybrid Energy Storage Systems for Electric , Hybrid Electric , Fuel Cell , and Plug-In Hybrid Electric Vehicles : State of the Art,”

IEEE Transactions on Vehicular Technology, vol. 59, no. 6, pp. 2806–2814, 2010.

[3] B. Alecsa, A. Tisan, and M. Cirstea, “High resolution 6 channels pulse width modulator for FPGA-based AC motor control,” in 2011 International Conference on Applied Electronics (AE), 2011, pp. 1–4.

[4] A. S. O. Yu, L. L. C. Silva, C. L. Chu, P. T. S. Nascimento, and A. S. Camargo, “Electric Vehicles : Struggles in Creating a Market,” in Technology Management in the Energy Smart

World (PICMET), 2011 Proceedings of PICMET ’11, 2011, pp. 1–13.

[5] C. C. Chan, “The state of the art of electric and hybrid vehicles,” Proceedings of the IEEE, vol. 90, no. 2, pp. 247–275, 2002.

[6] C. C. Chan, “The State of the Art of Electric, Hybrid, and Fuel Cell Vehicles,” Proceedings of the

IEEE, vol. 95, no. 4, pp. 704–718, Apr. 2007.

[7] M. Ehsani, Y. Gao, and A. Emadi, Modern Electric, Hybrid Electric and Fuel Cell Vehicles -

Fundamentals, Theory, and Design. 2010.

[8] S. M. Lukic, J. Cao, R. C. Bansal, F. Rodriguez, and A. Emadi, “Energy Storage Systems for Automotive Applications,” IEEE Transactions on Industrial Electronics, vol. 55, no. 6, pp. 2258– 2267, 2008.

[9] I. Husain, Electric and Hybrid Vehicles Design Fundamentals, 1st ed. Washington, DC, 2005. [10] P. R. M. P. de Carvalho, “Desenvolvimento de um Controlador para Acionamento de um Motor

Trifásico de Fluxo Axial,” Universidade do Minho, 2012.

[11] M. E. V. Team, “Electric Powertrains,” no. April. MIT, pp. 1 – 4, 2008.

[12] D. D. R. Pedrosa, “Desenvolvimento de um Veículo Eléctrico,” Universidade do Minho, 2010. [13] S. E. de Lucena, “A Survey on Electric and Hybrid Electric Vehicle Technology,” in in Electric

Vehicles - The Benefits and Barriers, 2011, pp. 1–18.

[14] N. Mutoh, H. Akashi, K. Suzuki, and T. Takayanagi, “Front and Rear Wheel Independent Drive Type Electric Vehicles ( FRID EVs ) with Outstanding Running Performance Suitable for Next- Generation Electric Vehicles,” in Electric Vehicle Conference (IEVC), 2012 IEEE International, 2012, pp. 1–8.

[15] K. Cakir and A. Sabanovic, “In-wheel motor design for electric vehicles,” in 9th IEEE

International Workshop on Advanced Motion Control, 2006, 2006, pp. 613–618.

[16] R. Vos, “Influence of in-wheel motors on the ride comfort of electric vehicles,” Eindhoven University of Technology, 2010.

[17] Mitsubishi, “Latest MMC technologies and near-future goals,” 2013. [Online]. Available: http://www.mitsubishi-motors.com/corporate/about_us/technology/environment/e/miev.html. [Accessed: 01-Feb-2013].

[18] T. Finken, M. Felden, and K. Hameyer, “Comparison and design of different electrical machine types regarding their applicability in hybrid electrical vehicles,” in 2008 18th International

Conference on Electrical Machines, 2008, pp. 1–5.

[19] B. Singh and S. Singh, “State of the Art on Permanent Magnet Brushless DC Motor Drives,”

Journal of Power Electronics, vol. 9, no. 1, pp. 1–17, 2009.

[20] J. F. Gieras, R.-J. Wang, and M. J. Kamper, Axial Flux Permanent Magnet Brushless Machines. 2004.

[21] S. Geetha, “Axial flux permanent magnet servo motor with sixteen poles.” University of Wollongong, 1993.

[22] C. C. Chan and K. T. Chau, “An overview of power electronics in electric vehicles,” IEEE

[23] K. T. Chau, C. C. Chan, and C. Liu, “Overview of Permanent-Magnet Brushless Drives for Electric and Hybrid Electric Vehicles,” IEEE Transactions on Industrial Electronics, vol. 55, no. 6, pp. 2246–2257, 2008.

[24] M. Yang, H. Jhou, B. Ma, and K. Shyu, “A Cost-Effective Method of Electric Brake With Energy Regeneration for Electric Vehicles,” IEEE Transactions on Industrial Electronics, vol. 56, no. 6, pp. 2203–2212, Jun. 2009.

[25] M. Zeraoulia, M. E. H. Benbouzid, and D. Diallo, “Electric Motor Drive Selection Issues for HEV Propulsion Systems : A Comparative Study,” IEEE Transactions on Vehicular Technology, vol. 55, no. 6, pp. 1756–1764, 2006.

[26] F. Giulii Capponi, G. De Donato, and F. Caricchi, “Recent Advances in Axial-Flux Permanent- Magnet Machine Technology,” IEEE Transactions on Industry Applications, vol. 48, no. 6, pp. 2190–2205, Nov. 2012.

[27] A. Mahmoudi, N. A. Rahim, and W. P. Hew, “Axial-flux permanent-magnet machine modeling, design, simulation and analysis,” Scientific Research and Essays, vol. 6, no. 12, pp. 2525–2549, 2011.

[28] C. Akuner and E. Huner, “The Air Gap and Angle Optimization in the Axial Flux Permanent Magnet Motor,” Electronics & Electrical Engineering, vol. 4, no. 110, pp. 25–29, 2011.

[29] F. Profumo, Z. Zhang, and A. Tenconi, “Axial Flux Machines Drives : A New Viable Solution for Electric Cars,” IEEE Transactions on Industrial Electronics, vol. 44, no. 1, pp. 39–45, 1997. [30] H. Arihara and K. Akatsu, “Basic Properties of an Axial-Type Switched Reluctance Motor,”

IEEE Transactions on Industry Applications, vol. 49, no. 1, pp. 59–65, Jan. 2013.

[31] A. Parviainen, “Design of Axial-Flux Permanent-Magnet Low-Speed Machines and Performance Comparison Between Radial-Flux and Axial-Flux Machines.” Lappeenranta University of Technology, Lappeenranta, 2005.

[32] M. Aydin, S. Huang, and T. A. Lipo, “A New Axial Flux Surface Mounted Permanent Magnet Machine Capable of Field Control,” in Conference Record of the Industry Applications

Conference, 2002. 37th IAS Annual Meeting, 2002, pp. 1250–1257.

[33] H.-S. Song, J.-B. Jung, B. H. Lee, D.-H. Shin, B.-H. Kim, Y.-C. Park, H. Heo, and H.-J. Kim, “A Study on the dynamic SOC compensation of an Ultracapacitor module for the Hybrid Energy Storage System,” in 31st International Telecommunications Energy Conference, 2009, INTELEC

2009, 2009.

[34] B. Bolund, H. Bernhoff, and M. Leijon, “Flywheel energy and power storage systems,”

Renewable and Sustainable Energy Reviews, vol. 11, no. 2, pp. 235–258, Feb. 2007.

[35] T. O. B. P. de Sá, “Traction Control in Electric Vehicles,” Faculdade de Engenharia da Universidade do Porto, 2012.

[36] X. T. Garcia, B. Zigmund, A. Terlizzi, R. Pavlanin, and L. Salvatore, “Comparison between FOC and DTC Strategies for Permanent Magnet Synchronous Motors,” Advances in Electrical and

Electronic Engineering, pp. 76–81.

[37] J. Khodabakhsh, “DTC in Contrast to FOC on Power train of Hybrid Electrical Vehicle,” in

International Conference on Electrical and Electronics Engineering (ICEEE’2012), 2012, no. 1,

pp. 2–5.

[38] M. Aguirre, C. Calleja, A. Lopez-de-Heredia, J. Poza, A. Aranburu, and T. Nieva, “FOC and DTC comparison in PMSM for railway traction application,” in Proceedings of the 2011-14th

European Conference on Power Electronics and Applications (EPE 2011), 2011, pp. 1–10.

[39] T. S. Wang, J. G. Zhu, Y. G. Guo, G. Lei, and W. Xu, “Simulation and experimental studies of permanent magnet synchronous motor control methods,” in 2011 International Conference on

Applied Superconductivity and Electromagnetic Devices (ASEMD), 2011, pp. 252–255.

[40] K. H. Harib, E. A. Khousa, and A. Ismail, “Field Oriented Motion Control of a 3- Phase Permanent Magnet Synchronous Motor,” in 2011 2nd International Conference on Electric

Power and Energy Conversion Systems (EPECS), 2011, vol. 17555, pp. 1 – 7.

[41] G. U. Jing, O. Minggao, L. I. Jianqiu, L. U. Dongbin, F. Chuan, and M. A. Yan, “Driving and Braking Control of PM Synchronous Motor Based on Low resolution Hall Sensor for Battery Electric Vehicle,” Chinese Journal of Mechanical Engineering, vol. 26, no. 1, pp. 1–10, 2013. [42] D. Ross and J. Theys, “Using the dsPIC30F for Vector Control of an ACIM.” Microchip

[43] B. Alsayid, A. Daud, and A. Zaidan, “DSP Based Speed Control of the Surface Mounted Permanent Magnet Synchronous Motor Using Space Vector Modulation,” in 2012 First

International Conference on Renewable Energies and Vehicular Technology (REVET), 2012, pp.

460–465.

[44] “Coordinate transform.” Fujitsu, pp. 1–14, 2011.

[45] A. El Shahat and H. El Shewy, “Permanent magnet synchronous motor dynamic modeling with genetic algorithm performance improvement,” International Journal of Engineering, Science and

Technology, vol. 2, no. 2, pp. 93–106, 2010.

[46] T. M. S. Ramos, “Sistema de tracção de um Veículo Eléctrico de Competição,” Faculdade de Engenharia da Universidade do Porto, 2011.

[47] S. Woolaghan and N. Schofield, “Current Source Inverters for PM machine control,” in 2009

IEEE International Electric Machines and Drives Conference, 2009, pp. 702–708.

[48] C. J. Hawley and S. A. Gower, “SMES PCS Topology Design - A Critical Comparison of Inverter Technologies.” University of Wollongong, Wollongong.

[49] K. V. Kumar, P. A. Michael, J. P. John, and S. S. Kumar, “Simulation And Comparison of SPWM and SVPWM Control for Three Phase Inverter,” ARPN Journal of Engineering and

Applied Sciences, vol. 5, no. 7, pp. 61–74, 2010.

[50] T. Wiangtong, W. Sangchai, and P. Lumyong, “FPGA based-IC design for inverter with vector modulation technique,” in 2000 IEEE International Symposium on Circuits and Systems, 2000, vol. 1, pp. 499–502.

[51] A. Maamoun, Y. M. Alsayed, and A. Shaltout, “Space-Vector PWM Inverter Feeding a

Permanent-Magnet Synchronous Motor,” World Academy of Science, Engineering & Technology, vol. 65, no. 41, pp. 627–631, 2010.

[52] “Field Oriented Control of Permanent Magnet Synchronous Motors.” Microsemi. [53] M. Saravanan, R. Nandakumar, and G. Veerabalaji, “Effectual SVPWM Techniques and

Implementation of FPGA Based Induction Motor Drive,” International Journal of Reconfigurable

and Embedded Systems (IJRES), vol. 1, no. 1, pp. 11–18, 2012.

[54] H. Zhu, P. Dai, X. Fu, and W. Zong, “FPGA Based Embedded Implement of Space Vector Pulse Width Modulation,” in 2010 Asia Pacific Conference on Postgraduate Research in

Microelectronics and Electronics (PrimeAsia), 2010, pp. 5–8.

[55] E. Simon, “Implementation of a Speed Field Oriented Control of 3-phase PMSM Motor using TMS320F240,” no. September. Texas Instruments, 1999.

[56] V. M. Mora, C. A. Nunez, V. M. Cardenas, and H. Miranda, “Simple and Practical FPGA Implementation of Space Vector Modulation Based on Geometrical Considerations,” in 10th

IEEE International Power Electronics Congress, 2006, vol. 3, no. i, pp. 1–6.

[57] XLINX, “Field Programmable Gate Array (FPGA),” 2013. [Online]. Available:

http://www.xilinx.com/training/fpga/fpga-field-programmable-gate-array.htm. [Accessed: 30-Jan- 2013].

[58] “What is a FPGA?,” 2013. [Online]. Available: http://www.xilinx.com/fpga/. [Accessed: 29-Sep- 2013].

[59] “FPGA design flow overview.” [Online]. Available: http://www.fpgacentral.com/docs/fpga- tutorial/fpga-design-flow-overview. [Accessed: 27-Oct-2013].

[60] F. A. P. Lopes, “Estudo e Comparação de Diferentes Métodos de Controlo de Motores Síncronos com Ímanes Permanentes,” Faculdade de Engenharia da Universidade do Porto, 2008.

[61] M. Haldar, A. Nayak, N. Shenoy, A. Choudhary, and P. Banerjee, “FPGA hardware synthesis from MATLAB,” in Procedings of the 14th International Conference on VLSI Design, 2001, pp. 299–304.

[62] B. Yongming, Z. Lijing, L. Hao, L. Anhu, and X. Xinming, “Regenerative Braking Strategy for Motor Hoist by Ultracapacitor,” Chinese Journal of Mechanical Engeneering, vol. 24, no. 6, pp. 1–9, 2011.

[63] T. Chen, T. Ren, Y. Chen, and Y. Lou, “Driving and Regenerative Braking Method for Energy- Saving Wheel Motor,” in Proceedings of SICE Annual Conference 2010, 2010, pp. 2654–2659. [64] M. K. Yoong, Y. H. Gan, G. D. Gan, C. K. Leong, Z. Y. Phuan, B. K. Chew, and K. W. Cheah,

Conference on Sustainable Utilization and Development in Engineering and Technology, 2010,

no. November, pp. 40–45.

[65] C. Chen, W. Chi, and M. Cheng, “Regenerative Braking Control for Light Electric Vehicles,” in

2011 IEEE Ninth International Conference on Power Electronics and Drive Systems (PEDS),

2011, no. December, pp. 631 – 636.

[66] H.-S. Song, J.-B. Jeong, D.-H. Shin, B.-H. Lee, H.-J. Kim, and H. Heo, “Dynamic SOC Compensation of an Ultracapacitor Module for a Hybrid Energy Storage System,” Journal of

Power Electronics, vol. 10, no. 6, pp. 769–776, Nov. 2010.

[67] “PSIM Simulator Software - Home,” 2013. [Online]. Available: http://www.psim-europe.com/. [Accessed: 25-Feb-2013].

[68] V. Bobek, “PMSM Electrical Parameters Measurement,” 2013. [69] Perm-Motor, “Gearless Wheel Hub Drive,” 2009.

[70] RLS, “AM256 – Angular magnetic encoder IC,” RLS, 2010. [71] RLS, “RMB28 angular magnetic encoder module,” 2010.

[72] A. M. Ratings, S. Conditions, and I. Diode, “SKM 100GB176D,” 2010. [73] R. Skyper, “Skyper 32pro R,” 2007.

[74] B. S. R, “Adaptor Board 1 SKYPER ® 32PRO R Technical Explanations,” 2010.

[75] “Imagen LA 100-P/SP13.” [Online]. Available: http://sigma.octopart.com/8359031/image/LEM- LA100-P/SP13.jpg. [Accessed: 28-Aug-2013].

[76] LEM, “Current Transducer LA 100-P / SP13,” 1997. [77] LEM, “Voltage Transducer LV 25-P.”

[78] Xilinx, “Spartan-3E FPGA Starter Kit Board User Guide,” 2011.

[79] Digilent, “Digilent PmodAD1TM Analog To Digital Module Converter Board Reference Manual,” 2011.

[80] A. Devices, “AD7476A Datasheet,” 2011.

[81] Digilent, “Digilent PmodDA2TM Digital ToAnalog Module Converter Board Reference Manual,” 2006.

[82] T. Instruments, “DAC121S101 Datasheet,” 2013. [83] Digilent, “FX2 MIBTM Reference Manual,” 2009.

[84] A. P. Taylor, “How to Use the CORDIC Algorithm in Your FPGA Design,” Xcell journal, no. 79, pp. 100 – 55, 2012.