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

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Direct Torque Control with Space Vector Modulation Dz ( ) G ( ) M z M e_ ref( z) P ( ) M z C ( ) M z ∆δ Ψ G Mδ ( z) U s z −1 AM s ZOH 2 s + B s+ C M M M ( ) e z Figure 5.19. Block diagram of torque control loop with prefilter (discrete domain). Finally, the step response of closed torque control loop with prefilter at the input is presented bellow: a) b) Figure 5.20. a) Torque step response for sampling time T = 200µ s, b) with denoted rise time, overshoot and settling time. s As it can be observed, the response is now characterized by overshoot about 2%, rise time 5 samples and the settling time 15 samples. In digital control system when the sampling time is changed the parameters of digitalized control plant AMd, BMd, C Md will also change. Therefore, the parameters of PI torque controller will change also (see Table 2). Simulation results for digital torque control loop in SABER package for 5KHz with and without prefilter are shown in Fig. 5.21. Also, the torque step response for different level of reference torque are presented in Fig. 5.22. The settings for PI torque controller for different sampling time T s = 50µ s , 100µ s , 200µ s , 400µ s are summarized in Table 5.2. 84
Direct Torque Control with Space Vector Modulation a) b) Figure 5.21. Torque step response: a) without prefilter, b) with prefilter. Figure 5.22. Torque step response with prefilter (from 0 to 25%, 50%, 75% and 100% of nominal torque). 85
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POLITECHNIKA WARSZAWSKA WARSAW UNIV
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Contents Table of Contents Chapter
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Introduction Chapter 1 INTRODUCTION
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Introduction to surface-mounted mac
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Introduction vector control, which
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Introduction presented and studied.
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Modeling and control modes of PM sy
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Page 37 and 38: Modeling and control modes of PM sy
Page 39 and 40: Voltage source PWM inverter for PMS
Page 57 and 58: Control methods of PM Synchronous m
Page 69 and 70: Direct Torque Control with Space Ve
Page 87: Direct Torque Control with Space Ve
Page 125 and 126: Sensorless Speed Direct Torque Cont
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Sensorless Speed Direct Torque Cont
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DSP implementation of DTC-SVM contr
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Summary and closing conclusion Chap
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Appendices APPENDICES A1 Rotor and
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Appendices ⎡ ⎤ ⎢ 1 0 ⎥ ⎡K
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Appendices i(t1->t0)+=it1 it1: it1=
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Appendices A7 PWM technique - six s
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List of symbol List of symbols Symb
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References Books and PhD-Thesis 1.
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References 39. J.-I. Itoh, N. Nomur
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References 74. N. Ertugrul, P. Acar
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References 108. D. Świerczyński,
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