Abstract
Induction motor (IM) is a workhorse of the industry, whose dynamics can be modified close to that of a separately excited DC machine by field-oriented control technique, which is commonly known as vector control of induction machine. This paper presents a complete performance of the field-oriented control of IM drive in all four quadrants with a single-current-sensor-based active front end converter whose work is to regulate DC link voltage, draw pure sinusoidal currents at unity power factor and to facilitate bi-directional power flow between the grid and the drive. The entire system is completely modelled in MATLAB/SIMULINK and the results are discussed in detail. The vector control analogy of the back to back converters is highlighted along with the experimental results of field-oriented control of induction machine using a dsPIC30F6010A digital signal controller.
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Abbreviations
- \( R_{s} \) :
-
stator resistance per phase
- \( L_{s} \) :
-
stator inductance per phase
- \( L_{o} \) :
-
magnetizing inductance per phase
- \( \sigma \) :
-
resultant leakage constant
- \( \sigma_{r} \) :
-
rotor leakage constant
- \( M_{d} \) :
-
developed electromagnetic torque
- P :
-
number of poles
- \( \uppsi_{r} \) :
-
rotor flux space phasor
- \( T_{r} \) :
-
rotor time constant
- \( V_{sd} \) :
-
stator voltage along d-axis
- \( i_{sd} \) :
-
stator current along d-axis
- \( V_{sq} \) :
-
stator voltage along q-axis
- \( i_{sq} \) :
-
stator current along q-axis
- \( i_{mr} \) :
-
current responsible for rotor flux
- \( \omega_{s} \) :
-
speed of rotor flux in electrical radians per second
- \( \omega_{e} \) :
-
speed of rotor in electrical radians per second
- \( L_{f} \) :
-
coupling inductance per phase
- \( R_{f} \) :
-
grid resistance per phase
- \( V_{gd} \) :
-
grid voltage along d-axis
- \( V_{id} \) :
-
converter voltage along d-axis
- \( V_{gq} \) :
-
grid voltage along q-axis
- \( V_{iq} \) :
-
converter voltage along q-axis
- \( \omega_{gs} \) :
-
grid angular frequency
- \( C \) :
-
DC link capacitance
- \( V_{dc} \) :
-
DC link voltage
- \( i_{gd} \) :
-
reactive component of grid line current along d-axis
- \( i_{gq} \) :
-
active component of grid line current along q-axis
- \( P_{grid} \) :
-
active power drawn from the grid
- \( P_{load} \) :
-
active power supplied to load
- \( P_{motor} \) :
-
active power supplied to motor
- \( Q_{motor} \) :
-
reactive power supplied to motor
- \( Q_{grid} \) :
-
reactive power drawn from the grid
- \( i_{gd\_ref} \) :
-
reactive component reference of grid line current
- \( i_{gq\_ref} \) :
-
active component reference of grid line current
- \( i_{sd\_ref} \) :
-
flux component reference of motor line current
- \( i_{sq\_ref} \) :
-
torque component reference of motor line current
- \( F_{s} \) :
-
switching frequency of the converters
- \( i_{beta\_est\_grid} \) :
-
estimated beta current (grid side)
- \( i_{beta\_grid\,current } \) :
-
actual beta current (grid side)
References
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Leonhard W 2001 Control of electrical drives, 3rd edn, Springer, Berlin
Siva Prasad J S, Bhavar T, Ghosh R and Narayanan G 2008 Vector control of three phase AC/DC frontend converter. Sadhana 33(5): 591–613
Bowling S 2005 An introduction to AC induction motor control using dsPIC30F MCU. AN984, microchip
Bhuvaneswari G, Singh B and Madishetti S 2012 Three phase, two switch PFC rectifier fed three-level VSI based FOC of induction motor drive. In: Proceedings of the IEEE Fifth Power India Conference, pp. 1–6
Mishra H and Jain A K 2014 Single current sensor based vector control of AC/DC front end converter. In: Proceedings of the IEEE PIICON-2014 Conference, New Delhi
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Banda, J.K., Jain, A.K. Single-current-sensor-based active front-end-converter-fed four quadrants induction motor drive. Sādhanā 42, 1275–1283 (2017). https://doi.org/10.1007/s12046-017-0681-1
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DOI: https://doi.org/10.1007/s12046-017-0681-1