Harmonic Analysis of Advanced Bus-Clamping PWM Techniques

Special switching sequences can be employed in space-vector-based generation of pulsewidth-modulated (PWM) waveforms for voltage-source inverters. These sequences involve switching a phase twice, switching the second phase once, and clamping the third phase in a subcycle. Advanced bus-clamping PWM (...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2009-10, Vol.24 (10), p.2347-2352
Main Authors: Bhavsar, T., Narayanan, G.
Format: Article
Language:English
Subjects:
Applied sciences
Bandwidths
Clamps
Closed-form solution
Convertors
Electric power
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Exact solutions
Harmonic analysis
Harmonic distortion
induction motor drive
Inverters
Mathematical analysis
Power networks and lines
Pulse duration modulation
Pulse generation
Pulse inverters
Pulse width modulation
Pulse width modulation inverters
pulsewidth modulation (PWM)
Regulation and control
Space vector pulse width modulation
space vector PWM
Studies
Switching
Switching sequences
Theory. Simulation
Voltage
voltage-source inverter (VSI)
Waveforms
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Description
Summary:Special switching sequences can be employed in space-vector-based generation of pulsewidth-modulated (PWM) waveforms for voltage-source inverters. These sequences involve switching a phase twice, switching the second phase once, and clamping the third phase in a subcycle. Advanced bus-clamping PWM (ABCPWM) techniques have been proposed recently that employ such switching sequences. This letter studies the spectral properties of the waveforms produced by these PWM techniques. Further, analytical closed-form expressions are derived for the total rms harmonic distortion due to these techniques. It is shown that the ABCPWM techniques lead to lower distortion than conventional space vector PWM and discontinuous PWM at higher modulation indexes. The findings are validated on a 2.2-kW constant V/f induction motor drive and also on a 100-kW motor drive.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2009.2013492