Institute of Power Electronics 1 Matti Jussila Nordic Workshop on Power and Industrial Electronics...
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1 Matti Jussila Nordic Workshop on Power and Industrial Electronics 2004 June 15 th , 2004 Institute of Power Electronics 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 [email protected] +358 3 3115 4257
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Transcript of Institute of Power Electronics 1 Matti Jussila Nordic Workshop on Power and Industrial Electronics...
1
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
A vector modulated three-phase four-quadrant rectifier – application to a dc
motor drive
Matti JussilaInstitute of Power Electronics
Tampere University of Technology
P.O. Box 692, FI-33101, Tampere, Finland
+358 3 3115 4257
2
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
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
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
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
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
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
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
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
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
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
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
Modulation of four quadrant rectifier
Space vector modulation
A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive
siiγ 3
πsin TθmT
siiδ sin TθmT
mi = |ii,ref| / |idc
ic 2
ib ia i 32 iii aai
dcidcc2
dcbdcai 32 iiswiswisw swaai
, a = ej2/3
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Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive
Simulation model
Motor Table I
Dc Motor Parameters
Nominal shaft power, Pn 4.5 kW Nominal rotational speed, nn 1000 rpm Nominal torque, Tn 42.6 Nm Nominal armature voltage, VAr,n 440 V Nominal armature current, IAr,n 13.7 A Nominal excitation current, Iexcitation,n 1.33 A Armature inductance, LAr 121 mH Armature resistance, RAr 9.5
rAr
ArArArAr d
dc
t
iLiRv
Separately excited dc motor
Constant field excitation
9
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
Simulation model
LC-filter
Control system
A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive
dcrefdc,dcrefdc,ix
refix, 3
2ikviv
vi
fs = 5 kHz
iy,ref = 0
From the equation of the active power:
L: 2% (2.3 mH) C: 11% (10F)
10
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
Simulation results
Load torque steps
Constant speed 1000 rpm
A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive
11
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
Simulation results
Speed reference steps
Constant load 42 Nm
A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive
12
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
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
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
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
Matti Jussila
Nordic Workshop on Power and Industrial Electronics 2004 June 15th, 2004Institute of Power Electronics
A vector modulated three-phase four-quadrant rectifier – application to a dc motor drive
Extra
Prototype
