A novel PWM technique for three-phase inverter/converter.

This paper presents a three-phase PWM current source inverter-induction motor drive system with photovoltaic generation. The system is interacted to single-phase utility using PWM converter, and the photovoltaic arrays are connected to the dc link of the system by employing a step-down chopper. The chopper is operated on PWM switching, and contributes to maintain the maximum power of the arrays and to smooth the dc link current in the small dc reactor. The PWM converter can flow the power in bidirection between the system and the utility with a sinusoidal current in the ac side.In this paper, the system configuration and the control methods are shown. First of all, the PWM strategy of the chopper, which depends on the converter PWM operation, is explained in detail and the switching patterns are given. Next, the experimental and the theoretical results at the steady state operations are given, and it is shown that the use of the PWM chopper is effective for the improvement of the ac waveforms. Finally, the waveforms at the transient operation are given in the variable speed drive of the motor and the change of the sunlight quantity for the arrays. The results prove that the proposed system has good performances for the utilization of the photovoltaic power.

show abstract

“…of Electrical Engineering, Faculty of Engineering, Fukuoka University 8-19-1, Nanakuma, Jonan-ku, Fukuoka 814-0180 PWM V/ f i PWM (9) M I PWM 3. …”

Section: -0180mentioning

confidence: 99%

Single-phase Utility Interaction System with Photovoltaic Generation for Three-phase PWM Current Source Inverter-Induction Motor Drives

Neba

Esaki

2004

IEEJ Trans. IA

View full text Add to dashboard Cite

show abstract

“…With the advent of switches with turn-off capabilities, attention was given to the possibilities of modulating the output of a current source inverter/converter by completely interrupting the current through it. To this end, special types of carrier-wave modulation techniques were proposed that included modulation of the central 60 while preserving the same anti-mirror symmetries mentioned above [7]- [10]. During the time intervals where zero ac input current to the converter is mandated by the chosen PWM, the dc link is short circuited either by switching on simultaneously two switches in the same leg of the bridge [7], [8], or by activating two additional switches across the dc link [9], [10].…”

Section: A Limitations and Restrictions In Three-phase Current Sourcmentioning

confidence: 99%

Switched link PWM current source converters with harmonic elimination at the mains

Sharon

Fuchs²

2000

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

Novel switched link pulse-width-modulated (PWM) current source converters are presented. These converters supply a controlled dc current to the load with a concurrent elimination of selected harmonics in the ac mains. The new topologies permit minimal constraints to be formulated resulting in significantly more efficient PWM patterns than hitherto reported in the literature. A higher number of harmonics are thus eliminated at the mains for a given switching frequency while maintaining a control capability of the output dc current in a wide range. Simulation results confirm the theoretical findings. Also discussed in the paper is the selection of capacitor filters to mitigate the residual harmonics. Index Terms-Amplitudemodulation, current source converter, harmonic elimination, pulsewidth modulation. Daniel Sharon (M'71-SM'83) received the B.Sc., M.Sc.(with honors), and D.Sc. degrees in electrical engineering from the Technion-Israel Institute of Technology, Haifa, Israel.

show abstract

“…The PWM control system is presented in [6]. This control circuit allows the use of several modulation techniques as the one presented by Ohnishi [7]. This paper presents the control circuit and performance of a shunt active power filter and unbalanced current compensator.…”

Section: Introductionmentioning

confidence: 99%

An active power filter and unbalanced current compensator

Verdelho

Marques

1997

IEEE Trans. Ind. Electron.

160

View full text Add to dashboard Cite

This paper presents the synthesis and performance of a shunt active power filter based on the three-phase pulsewidth modulation (PWM) voltage converter connected to the ac mains. Current harmonics and asymmetries caused by nonlinear loads can be compensated. A decoupled system in Park's variables is achieved and so simple controllers with excellent performance can be used. The controllers are implemented directly in the Park's referential. Expressions for the controller's synthesis are derived. Experimental results from a 2-kVA IGBT prototype showing excellent dynamic and steady-state system's performances are presented. The control circuit is implemented with analog and digital electronic circuits. A considerable amount of electronic circuits is needed. The method presented in this paper can also be implemented with a digital signal processor.

show abstract

A novel PWM technique for three-phase inverter/converter.

Cited by 31 publications

References 7 publications

Single-phase Utility Interaction System with Photovoltaic Generation for Three-phase PWM Current Source Inverter-Induction Motor Drives

Single-phase Utility Interaction System with Photovoltaic Generation for Three-phase PWM Current Source Inverter-Induction Motor Drives

Switched link PWM current source converters with harmonic elimination at the mains

An active power filter and unbalanced current compensator

Contact Info

Product

Resources

About