Journal ArticleDOI
PWM-CSI inverter for induction motor drives
Bin Wu,Shashi B. Dewan,G.R. Slemon +2 more
- Vol. 28, Iss: 1, pp 64-71
TLDR
A number of issues involved in designing a current source inverter system for a large induction motor drive are discussed and two modulation techniques are used-selective harmonic elimination in the upper frequency range and trapezoidal modulation in the lower frequency range.Abstract:
The authors discuss a number of issues involved in designing a current source inverter system for a large induction motor drive. Using two modulation techniques-selected harmonic elimination in the upper frequency range and trapezoidal modulation in the lower frequency range-control of voltage, current, and torque harmonics is achieved while limiting the GTO switching frequency to 180 Hz. Each modulation range is divided into a number of subranges to exploit the available switching capacity and to avoid harmonic resonances involving the capacitor and the motor inductance. In addition to the development of basic principles, the authors include simulation waveforms and test results from a laboratory experimental system. >read more
Citations
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Journal ArticleDOI
A new approach to enhance power quality for medium voltage AC drives
TL;DR: In this article, a new approach to medium-voltage variable-frequency static AC motor drives was proposed to improve the power quality of the motor by improving motor voltage and current waveforms.
Journal ArticleDOI
A Review of Multilevel Selective Harmonic Elimination PWM: Formulations, Solving Algorithms, Implementation and Applications
TL;DR: A comprehensive review of the multilevel selective harmonic elimination pulse width modulation (SHE-PWM) is presented in this paper, focusing on various aspects of multi-level multi-mode PWM modulation, including different problem formulations, solving algorithms, and implementation in various multi-layer converter topologies.
Journal ArticleDOI
Active damping control of a high-power PWM current-source rectifier for line-current THD reduction
J.C. Wiseman,Bin Wu +1 more
TL;DR: In this article, an active damping control method is proposed for the reduction in line current THD of high-power current-source rectifiers operating at a switching frequency of only 540 Hz.
Proceedings ArticleDOI
A new approach to enhance power quality for medium voltage drives
TL;DR: In this article, a new approach to medium voltage, variable frequency, static AC motor drives offers improvements in power quality, and the power factor of this new type of drive exceeds 94% at full load and is above 90% at 10% load.
Proceedings ArticleDOI
A current-source inverter fed induction motor drive system with reduced losses
Jose Espinoza,Geza Joos +1 more
TL;DR: The proposed drive features an on-line operated PWM inverter, using instantaneous output capacitor voltage control based on space vector modulation, and a line-synchronized PWM rectifier, with DC bus current control, ensuring a constant inverter modulation index.
References
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Journal ArticleDOI
Generalized Techniques of Harmonic Elimination and Voltage Control in Thyristor Inverters: Part I--Harmonic Elimination
Hasmukh S. Patel,Richard G. Hoft +1 more
TL;DR: In this article, the theoretical problem of eliminating harmonics in inverter-output waveforms was considered, and numerical techniques were applied to solve the nonlinear equations of the problem on the computer.
Journal ArticleDOI
Modelling of inductance machines for electric drives
TL;DR: In this article, the authors presented several linear and nonlinear models suitable for transient and steady-state analyses of induction machine drives, which are presented in equivalent circuit form to preserve the identity of nonlinear parameters.
Journal ArticleDOI
A New Current Source GTO Inverter with Sinusoidal Output Voltage and Current
TL;DR: In this article, a new current source inverter with sinusoidal output voltage and current is presented, where three capacitors are connected to the ac output terminals to absorb overvoltages which occur when the GTO current is cut off and provide a filter function for reducing harmonics in the output current.
Journal ArticleDOI
A Current Source GTO Inverter with Sinusoidal Inputs and Outputs
TL;DR: In this paper, a current source inverter capable of producing sinusoidal input/output (I/O) voltages and currents has been developed for driving an ac motor at variable speeds.
Journal ArticleDOI
Optimal Pulsewidth Modulation for Current Source Inverters
TL;DR: In this paper, two different pulsewidth modulation (PWM) schemes for current source inverters (CSI) are described, one is based on off-line optimization of individual switching angles and requires a microprocessor for implementation and the second one uses a special subharmonic modulation and could be implemented with analog and medium-scale integration (MSI) digital circuits.