A study of dead-time of PWM rectifier of voltage-source inverter without dc link components and its operating characteristics of induction motor

Iimori, K.; Shinohara, K.; Yamamoto, K.

doi:10.1109/ias.2004.1348690

Cited by 7 publications

(8 citation statements)

References 9 publications

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“…The switches are made to commutate with zero current by setting zero voltage vector of the inverter to occur at both the beginning and ending of each portion. A separate synchronizing circuit is required [10] to ensure the occurrence of zero voltage vector of the voltage Table 2 Switch state and the DC voltage in each interval source inverter during the commutation of rectifier switches when conventional sinusoidal pulse width modulation technique is employed. However, this need for synchronizing circuit can be eliminated if space vector modulation technique is employed instead of sinusoidal pulse width modulation for the voltage source inverter present in the SSSC.…”

Section: Pwm Technique For Current Source Rectifiermentioning

confidence: 99%

Investigation of performance of UPFC without DC link capacitor

Geethalakshmi

Dananjayan

2008

Electric Power Systems Research

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Section: Pwm Technique For Current Source Rectifiermentioning

confidence: 99%

Investigation of performance of UPFC without DC link capacitor

Geethalakshmi

Dananjayan

2008

Electric Power Systems Research

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“…Regarding commutation strategies of IMC, two main rules should be taken into account: (i) in order to prevent short circuit in the converter input, the incoming and outgoing switches should not be switched on together at any point in time; and (2) in order to prevent sudden overvoltage occurrences and switches' damage, these switches should not be turned off simultaneously . To ensure the establishment of two conditions at any time, snubber circuits are used in the rectifier bridge of IMC, but because the DC link part in IMC has no smoothing circuit such as electrolytic capacitors in conventional VSI, the load current must be diverted to the snubber circuits during the period switching dead time in the rectifier bridge.…”

Section: Indirect Matrix Converter Theorymentioning

confidence: 99%

“…But snubber circuits cause additional losses and input current waveform disturbance. Rectifier zero‐current commutation and rectifier four‐step commutation are two current commutation methods that do not require snubber circuits for a pulse width‐modulated rectifier , and in this paper, the rectifier four‐step commutation is implemented in a rectifier bridge to eliminate snubber circuits drawbacks.…”

Section: Introductionmentioning

confidence: 99%

High‐performance doubly fed induction machine drive system using predictive direct torque control drive system fed by indirect matrix converters

Behnia

Faraji

Aghasi

et al. 2013

Int J Numerical Modelling

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SUMMARY This paper presents a novel predictive direct torque control for doubly fed induction machine based on indirect matrix converter (IMC), which is characterized by its simple structure, minimal‐torque ripple, and constant switching frequency. Nowadays, the control strategies based on predictive methods have proved their efficiency to improve drive systems capabilities. So, in this paper, one of the best predictive methods that have recently been suggested for doubly fed induction machine drive systems is applied to IMC. The purpose of this combination is to modify the control parameters and size/volume reduction of drive system structure, which is difficult to achieve in conventional systems based on voltage source inverters. The good tracking behavior with reduced torque and flux ripple for both motoring and generating modes as well as removing bulky electrolytic capacitor from the DC link of a converter resulted by using three vectors, two active vectors together with one zero vector per switching period, and applying these vectors to the inverter stage of IMC. To improve the motor drive system performance and reduce losses caused by snubber circuits, the rectifier four‐step commutation method in rectifier bridge is used. In the inverter stage, the predictive direct torque control method is employed. The simulation results of the proposed model confirm its effectiveness and accuracy. Copyright © 2013 John Wiley & Sons, Ltd.

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“…Conventional voltage source inverters are normally equipped with an electrolyte capacitor in their DC link which has a short life compared with an AC capacitor (metalised polyester film, etc.) [10][11][12] and also they occupy a considerably greater space in the inverter. This supports the proposed topology of AC-DC-AC converter without DC link capacitor.…”

Section: Introductionmentioning

confidence: 98%

Performance analysis of AC-DC-AC converter as matrix converter

Geethalakshmi

Sanjeevikumar²,

Dananjayan

2006

2006 India International Conference on Power Electronics

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This paper proposes a matrix converter topology with simple commutation procedure and reduced number of switches which has the same performance of conventional matrix converter in terms of voltage transfer ratio, four quadrant operation, unity power factor, no DC link capacitor and pure sine wave with only higher order harmonics in both line and load side. Moreover this proposed converter can utilize the conventional PWM on inverter side, which greatly simplifies the complexity of control. Switches in each leg of same phase will turn on and turn off at zero current. Theoretical analysis and simulation results are provided to verify its performance.

show abstract

A study of dead-time of PWM rectifier of voltage-source inverter without dc link components and its operating characteristics of induction motor

Cited by 7 publications

References 9 publications

Investigation of performance of UPFC without DC link capacitor

Investigation of performance of UPFC without DC link capacitor

High‐performance doubly fed induction machine drive system using predictive direct torque control drive system fed by indirect matrix converters

Performance analysis of AC-DC-AC converter as matrix converter

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