PWM Technique of Five-Leg Inverter Applying Two-Arm Modulation

2011 IEEE Energy Conversion Congress and Exposition

2011

Self Cite

The methodology and experimental results of the independent speed control of two three-phase induction motors (IMs) fed by a five-leg inverter (5LI) with space vector modulation (SVM) are presented in this paper. Using SVM, we can select the switching count freely. But if SVM is applied to 5LI, normal SVM techniques to output voltages for motor in 3-VSI cannot be employed for the 5LI with independent driving because of its circuit configuration. Therefore, new SVM technique is needed. This paper shows the SVM technique for 5LI and the experimental results in case of using SVM with the least switching count for common leg of all. Then, experimental results are verified for the independent speed control of two IMs fed by the 5LI with SVM in this paper.

Section: B V/f Control Resultsmentioning

confidence: 99%

Independent speed control of two induction motors fed by a five-leg inverter with space vector modulation

Hara

Enokijima

2011 IEEE Energy Conversion Congress and Exposition

2011

Self Cite

“…In this paper, the PWM technique is used in [3], [5][6][7][8][9][10] As the results, the independent drive of two PMSMs fed by the FLI is possible with this PWM technique. Fig.…”

Section: Two-arm Modulation Techniquementioning

confidence: 99%

“…Recently, a Five-Leg Inverter (FLI) to drive two threephase permanent magnet synchronous motors (PMSMs) independently has been studied for aiming saving space and reduction of inverter losses [1][2][3][4][5][6][7][8][9][10]. The use of PMSM is spreading in industrial field.…”

Section: Introductionmentioning

confidence: 99%

“…Normal pulse width modulation (PWM) techniques to output voltages for the motor in the 3-VSI cannot be employed for the FLI with independent drive. Many PWM techniques applying the FLI have been suggested [1][2][3][4][5][6][7][8][9][10]. In [3], [5][6][7][8][9][10], the simple and novel PWM technique of the FLI is suggested, and it has an advantage that switching signals generation is very simple.…”

Section: Introductionmentioning

confidence: 99%

“…Applying the PWM strategy, the independent drive of two PMSMs is possible. The independent driving characteristics of two PMSMs fed by the FLI has been shown by only simulation results [6].This paper presents the experimental test results of the independent driving characteristics of two PMSMs fed by the FLI with the modulation technique in [3], [5][6][7][8][9][10]. The FLI can realize not only independent speed control [1 0] but also position control.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Independent Position Control of Two Permanent Magnet Synchronous Motor Drives Fed by a Five-Leg Inverter

Enokijima¹,

Oka

Journal of International Council on Electrical Engineering

2011

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-This paper presents the experimental test results of the independent vector control characteristics of two three-phase permanent magnet synchronous motors (PMSMs) fed by a five-leg inverter (FLI). Recently, the use of PMSM is more and more spreading in industrial field. It has the features of saving-weight and high-efficiency compared with DC motor and induction motor (IM). The maximum feature of the PMSMs is the realization of high performance position control. The independent position control validates for the factory automation (FA) apparatus as machine tool. If the independent position control of two motors with the FLI may be realized, the belt conveyer used at the FA apparatus as machine tool will become possible not only one dimension but also two dimensions with single inverter. In this paper, experimental results are verified for the independent position control of two PMSMs fed by the FLI with the vector control.

A novel PWM technique with switching‐loss reduction for independent drive of two 3‐phase AC motors fed by a five‐leg inverter

Oka

IEEJ Transactions Elec Engng

2011

Self Cite

This paper presents a novel pulse width modulation (PWM) technique with switching‐loss reduction for a five‐leg inverter (FLI). The PWM technique, in which the available maximum voltage for two motors adds up to DC bus voltage, has been proposed as the strategy for the FLI. Therefore, the DC bus voltage is fully available as the PWM strategy. However, the conventional PWM technique requires the frequency, phase, and amplitude of the phase voltage commands of a motor to produce zero‐sequence voltages (ZSVs). The novel PWM strategy has some efficient features. These features are discussed in this paper. The validity of the novel PWM technique will be shown by experimental results. © 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.