1. Institute of Power Electronics 1 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 A vector modulated three-phase four- quadrant rectifier – application to a dc motor drive Matti Jussila Institute of Power Electronics Tampere University of Technology P.O. Box 692, FI-33101, Tampere, Finland matti.jussila@tut.fi +358 3 3115 4257

2. Institute of Power Electronics 2 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive Index  Introduction  Modulation of four quadrant rectifier (FQR)  Simulation model  Simulation results  Conclusions

3. Institute of Power Electronics 3 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Introduction Conventional current source PWM rectifier:  Buck type rectifier  Sinusoidal line current  Two quadrant operation  not suitable for all applications, e.g. for dc drives A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

4. Institute of Power Electronics 4 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Introduction Four-quadrant PWM rectifier (FQR):  Buck type rectifier  Sinusoidal line current  Four quadrant operation  Six bidirectional switches A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

5. Institute of Power Electronics 5 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004  Antiparallel connected thyristor bridges:  Non-sinusoidal line current  Non-controllable power factor  Four-quadrant dc-dc chopper  Separate rectifier, e.g. diode bridge and brake resistor Introduction Conventional four-quadrant dc motor drives:  Sinusoidal line current with low harmonic distortion  Good dynamic response FQR: A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

6. Institute of Power Electronics 6 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Introduction Applications of FQR:  Modernisation of dc drives:  Only converters are replaced to attain better line current but (special) motors remain  Line bridge of indirect matrix converter  Three to two phase matrix converter A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

7. Institute of Power Electronics 7 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Modulation of four quadrant rectifier Space vector modulation A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive m i = |i i,ref | / |i dc, a = e j2  /3

8. Institute of Power Electronics 8 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive Simulation model Motor  Separately excited dc motor  Constant field excitation

9. Institute of Power Electronics 9 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Simulation model LC-filter Control system A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive  f s = 5 kHz  i y,ref = 0  From the equation of the active power:  L: 2% (2.3 mH)  C: 11% (10  F)

10. Institute of Power Electronics 10 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Simulation results Load torque steps  Constant speed 1000 rpm A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

11. Institute of Power Electronics 11 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Simulation results Speed reference steps  Constant load 42 Nm A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

12. Institute of Power Electronics 12 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Simulation results Steady state  Constant load 42 Nm & speed 1000 rpm A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

13. Institute of Power Electronics 13 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 Conclusions  Space vector modulation of FQR can be derived from space vector modulation of current source rectifier  FQR can be applied to dc drive  Discrete control methods can be used  FQR produces sinusoidal line current A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

14. Institute of Power Electronics 14 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th, 2004 A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive Extra Prototype