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A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

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.

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A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive

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  1. 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 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004

  2. 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 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004

  3. A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive • 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 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004

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

  5. A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive • Introduction Conventional four-quadrant dc motor drives: • 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 • FQR: • Sinusoidal line current with low harmonic distortion • Good dynamic response Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004

  6. A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive • 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 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004

  7. A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive • Modulation of four quadrant rectifier Space vector modulation , a = ej2/3 mi = |ii,ref| / |idc Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004

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

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

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

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

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

  13. A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive • 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 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004

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

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