scholarly journals Equivalent Phase Current Harmonic Elimination in Quadruple Three-Phase Drives Based on Carrier Phase Shift Method

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2709
Author(s):  
Xuchen Wang ◽  
Hao Yan ◽  
Giampaolo Buticchi ◽  
Chunyang Gu ◽  
He Zhang
Keyword(s):  
Carrier Phase ◽  
Pulse Width Modulation ◽  
Torque Ripple ◽  
Current Harmonics ◽  
Phase Current ◽  
Harmonic Elimination ◽  
Three Phase ◽  
High Control ◽  
Machine Drives ◽  
Transportation Applications

Multiphase drives are entering the spotlight of the research community for transportation applications with their high power density and the possibility of high fault tolerance. The multi three-phase drive is one of the main types of multiphase drives that allows for the direct adoption of commercial three-phase converters and high control flexibility. The elimination of high-frequency current harmonics will reduce the flux linkage harmonics, torque ripple, vibration and noise in machine drives. Therefore, this work introduces a new method to the modelling of equivalent phase current in multi three-phase drives with the double integral Fourier analysis method. A new carrier-based pulse-width modulation (CPWM) method is introduced to reduce the equivalent phase current harmonics by applying proper carrier phase angle to each subsystem in the multi three-phase drives. The proposed angles of carrier signals are analyzed for quadruple three-phase drives, and the corresponding experimental results confirm the significance of the proposed phase-shifted CPWM method to eliminate the equivalent phase current harmonics.

Direct Regular Sampled Pulse Width Modulation Technique for a Three-Phase Current Source Inverter

2015 ◽  
Vol 793 ◽  
pp. 226-231
Author(s):  
Syahrul Ashikin Azmi ◽  
Mohd Azrik Roslan
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Current Source ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Digital Implementation ◽  
Phase Current ◽  
Harmonic Elimination ◽  
Three Phase ◽  
Vector Modulation

This paper proposes a new regular sampled pulse width modulation (PWM) for three-phase current source inverters. The theoretical basis of the proposed modulation strategy is described, including dwell time calculations and switching sequence selection. This strategy is well suited for digital implementation, and enjoys all the flexibilities and degree of freedoms as in space vector modulation. In addition, it ensures a minimum number of switching transitions per fundamental cycle, unlike other PWM methods. It is therefore promising for high-power medium-voltage applications. The validity of the proposed modulation strategy has been confirmed using simulation and experimentation. To furthermore substantiate the superiority of the proposed modulation strategy against other PWM methods, its performance is compared to sinusoidal PWM, selective harmonic elimination, and space vector modulation.

Selective harmonic elimination pulse width modulation for three-phase cascaded multilevel inverter

2021 ◽  
Author(s):  
Baharuddin Ismail ◽  
Muzamir Isa ◽  
M. Z. Aikhsan ◽  
M. N. K. H. Rohani ◽  
C. L. Wooi ◽  
...  
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Multilevel Inverter ◽  
Harmonic Elimination ◽  
Three Phase ◽  
Selective Harmonic Elimination ◽  
Cascaded Multilevel Inverter

scholarly journals DESIGN AND SIMULATION OF THREE PHASE FIVE LEVEL AND SEVEN LEVEL INVERTER FED INDUCTION MOTOR DRIVE WITH TWO CASCADED H-BRIDGE CONFIGURATION

2013 ◽  
pp. 29-34
Author(s):  
MANASA S ◽  
BALAJI RAMAKRISHNA S ◽  
MADHURA S ◽  
MOHAN H M
Keyword(s):  
Induction Motor ◽  
Pulse Width Modulation ◽  
Induction Machine ◽  
Poor Quality ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Voltage Reference ◽  
Multilevel Converters ◽  
Harmonic Elimination ◽  
Three Phase

This paper deals with study of Three phase Five Level and Seven Level inverter fed induction motor drive . Both five level and seven level are realized by cascading two H- bridges. The poor quality of voltage and current of a conventional inverter fed induction machine is due to the presence of harmonics and hence there is significant level of energy losses. The Multilevel inverter is used to reduce the harmonics. The inverters with a large number of steps can generate high quality voltage waveforms. The higher levels can follow a voltage reference with accuracy and with the advantage that the generated voltage can be modulated in amplitude instead of pulse-width modulation. An active harmonic elimination method is applied to eliminate any number of specific higher order harmonics of multilevel converters with unequal dc voltages. The simulation of three phase five and seven level inverter fed induction motor model is done using Matlab/Simulink. The FFT spectrums for the outputs are analyzed to study the reduction in the harmonics.

scholarly journals Harmonic Analysis on Torque Ripple of Brushless DC Motor Based on Advanced Commutation Control

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Yanpeng Ji ◽  
Bin Li ◽  
Jingcheng Sun
Keyword(s):  
Harmonic Analysis ◽  
Influencing Factor ◽  
Torque Ripple ◽  
Current Harmonics ◽  
Phase Current ◽  
Brushless Dc ◽  
Harmonic Analysis Method ◽  
Permanent Magnet Brushless Dc ◽  
Relationship Of ◽  
The Relationship

This paper investigates the relationship between current, back electromotive force (back-EMF), and torque for permanent-magnet brushless DC (PM BLDC) motors under advanced commutation control from the perspective of harmonics. Considering that the phase current is the influencing factor of both torque and torque ripple, this paper firstly analyzes the effects of advanced commutation on phase current and current harmonics. And then, based on the harmonics of the phase current and back-EMF, the torque harmonic expressions are deduced. The expressions reveal the relationship of harmonic order between the torque, phase current, and back-EMF and highlight the different contribution of individual torque harmonic to the total torque ripple. Finally, the proposed harmonic analysis method is verified by the experiments with different speed and load conditions.

Selective Torque Harmonic Elimination for Dual Three-Phase PMSMs Based on PWM Carrier Phase Shift

2020 ◽  
Vol 35 (12) ◽  
pp. 13255-13269 ◽  
Author(s):  
Xuchen Wang ◽  
Hao Yan ◽  
Giacomo Sala ◽  
Giampaolo Buticchi ◽  
Chunyang Gu ◽  
...  
Keyword(s):  
Phase Shift ◽  
Carrier Phase ◽  
Harmonic Elimination ◽  
Three Phase
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