Direct Torque Control with Space Vector Modulation (DTC-SVM) of ...

More documents

Recommendations

Info

Sensorless Speed Direct Torque Control with Space Vector Modulation (DTC-SVM) The speed estimation problem is still open, especially at low and zero speed operations. The accuracy of presented method depends on accuracy of applied stator flux estimation and differentiation algorithm. It allows, however, for robust start, closed loop operation above 10% of nominal speed, and braking the drive to zero speed. 6.5 Summary The main problems associated with PMSM sensorless speed operation are presented in this Chapter. For robust start of PMSM without the temporary rotor reversal a special initialization algorithm has been used. This algorithm performs two test: short and the longer voltage generated by the PWM inverter. The used speed estimation algorithm is based on stator flux vector and torque angle estimation and does not operate accurately around zero speed region. However, it allows robust start and closed speed operation in the speed range above 10% of nominal speed. The effectiveness of DTC-SVM with and without motion sensor has been proved by simulation and experimental results (see Chapter 7) 136
DSP implementation of DTC-SVM control Chapter 7 DSP IMPLEMENTATION OF DTC-SVM CONTROL 7.1 Description of the laboratory test-stand The basic structure of laboratory setup is presented in Fig. 7.1 and the photo of laboratory setup is shown in Fig. 7.2. The motor setup consists of 3kW permanent magnet synchronous motor and DC motor, which is used as a load. The PMSM machine is supplied by PWM inverter, which is controlled by digital signal processor (DSP) based on DS1103 board. The voltage inverter is supplied from three-phase diodes rectifier. The DSP interface is used in order to separate the high power from the low power circuit (computer part). Please note that the DS1103 is inserted inside the PC computer. Figure 7.1. Block scheme of laboratory setup. Figure 7.2. Laboratory setup. 1-voltage inverter, 2-control for DC motor, 3- PMSM machine, 4 – DSP interface. 137
Page 1 and 2:
POLITECHNIKA WARSZAWSKA WARSAW UNIV
Page 3 and 4:
Contents Table of Contents Chapter
Page 5 and 6:
Introduction Chapter 1 INTRODUCTION
Page 7 and 8:
Introduction to surface-mounted mac
Page 9 and 10:
Introduction vector control, which
Page 11 and 12:
Introduction presented and studied.
Page 13 and 14:
Modeling and control modes of PM sy
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Voltage source PWM inverter for PMS
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Control methods of PM Synchronous m
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Direct Torque Control with Space Ve
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90: Direct Torque Control with Space Ve
Page 125 and 126: Sensorless Speed Direct Torque Cont
Page 139: Sensorless Speed Direct Torque Cont
Page 143 and 144: DSP implementation of DTC-SVM contr
Page 165 and 166: Summary and closing conclusion Chap
Page 167 and 168: Appendices APPENDICES A1 Rotor and
Page 169 and 170: Appendices ⎡ ⎤ ⎢ 1 0 ⎥ ⎡K
Page 171 and 172: Appendices i(t1->t0)+=it1 it1: it1=
Page 173 and 174: Appendices A7 PWM technique - six s
Page 175 and 176: List of symbol List of symbols Symb
Page 177 and 178: References Books and PhD-Thesis 1.
Page 179 and 180: References 39. J.-I. Itoh, N. Nomur
Page 181 and 182: References 74. N. Ertugrul, P. Acar
Page 183 and 184: References 108. D. Świerczyński,
show all

Direct Torque Control with Space Vector Modulation (DTC-SVM) of ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?