TY - JOUR
T1 - A Low-Order Harmonic Elimination Scheme for Induction Motor Drives Using a Multilevel Octadecagonal Space Vector Structure With a Single DC Source
AU - Boby, Mathews
AU - Rahul, Arun
AU - Gopakumar, K.
AU - Umanand, L.
AU - Blaabjerg, Frede
AU - Bhattacharya, Subhashish
PY - 2018/3
Y1 - 2018/3
N2 - Conventional voltage-source inverters used for induction motor drives generate a hexagonal space vector structure. In the overmodulation range, the hexagonal space vector structure generates low-order harmonics in the phase voltage resulting in low-order torque ripple in the motor. Inverter topologies with an octadecagonal (18 sided) space vector structure eliminate fifth-, seventh-, eleventh-, and thirteenth-order harmonics from the phase voltage, and hence, the dominant sixth- and twelfth-order torque ripple generation is eliminated. Octadecagonal space vector structures proposed in the past require multiple dc sources, which makes four-quadrant operation of the drive system difficult and costly. In this paper, the formation of a multilevel nine-concentric octadecagonal space vector structure using a single dc source is proposed. Detailed experimental results, using open-loop V/f control and rotor field-oriented control, are presented to validate the effectiveness of the proposed drive scheme.
AB - Conventional voltage-source inverters used for induction motor drives generate a hexagonal space vector structure. In the overmodulation range, the hexagonal space vector structure generates low-order harmonics in the phase voltage resulting in low-order torque ripple in the motor. Inverter topologies with an octadecagonal (18 sided) space vector structure eliminate fifth-, seventh-, eleventh-, and thirteenth-order harmonics from the phase voltage, and hence, the dominant sixth- and twelfth-order torque ripple generation is eliminated. Octadecagonal space vector structures proposed in the past require multiple dc sources, which makes four-quadrant operation of the drive system difficult and costly. In this paper, the formation of a multilevel nine-concentric octadecagonal space vector structure using a single dc source is proposed. Detailed experimental results, using open-loop V/f control and rotor field-oriented control, are presented to validate the effectiveness of the proposed drive scheme.
KW - Harmonic elimination
KW - induction motor drive (IMD)
KW - low-order harmonics
KW - multilevel converters
KW - octadecagon
KW - power converter
KW - single dc source
KW - space vector
UR - http://www.scopus.com/inward/record.url?scp=85038920155&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2017.2695660
DO - 10.1109/TPEL.2017.2695660
M3 - Journal article
SN - 0885-8993
VL - 33
SP - 2430
EP - 2437
JO - I E E E Transactions on Power Electronics
JF - I E E E Transactions on Power Electronics
IS - 3
M1 - 7904707
ER -