Optimal Common-Mode Voltage Reduction PWM Technique for Inverter Control With Consideration of the Dead-Time Effects—Part I: Basic Development

Lai, Yen-Shin; Shyu, Fu-San

doi:10.1109/tia.2004.836149

Cited by 221 publications

(75 citation statements)

References 17 publications

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“…B. Active Zero State PWM Method 1 (AZSPWM1) [12], [13] AZSPWM1 involves utilizing the two adjacent voltage vectors along with two opposing active voltage vectors with equal duty cycle to provide cancellation and create an effective zero state. For example, as shown in Fig.…”

Section: Rcmv-pwm Methodsmentioning

confidence: 99%

“…However, of these, only two methods, the Near State PWM (NSPWM) method [10], [11] and the Active Zero State PWM1 (AZSPWM1) method [12], [13] are practically feasible. All other RCMV-PWM methods [12]- [15] require simultaneous inverter leg switchings, which is practically very difficult to realize (due to dead-time, propagation delays, unequal rise and fall times of different devices, etc.). If simultaneous switching can be realized, then a severer problem arises.…”

mentioning

confidence: 99%

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On the Contribution of PWM Methods to the Common Mode (Leakage) Current in Conventional Three-Phase Two-Level Inverters as Applied to AC Motor Drives

Hava

Cetin

Ün

2008

2008 IEEE Industry Applications Society Annual Meeting

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This paper experimentally investigates the Common Mode Voltage (CMV) and Common Mode Current (CMC, leakage current) characteristics of various PWM methods for the classical two-level three-phase Voltage Source Inverter (VSI) as applied to induction motors. The classical SVPWM and DPWM methods which have high CMV/CMC, and the recently proposed Reduced CMV (RCMV) PWM methods, such as NSPWM and AZSPWM1 are considered. The effect of including the low cost industry solution of the Common Mode Inductor (CMI) for CMC reduction is investigated. Furthermore, the dependency of the CMC on the inverter topology is investigated by the experimental evaluation of a commercial three-level neutral-point-clamped (NPC) VSI. Based on the experimental results, it is shown that it is beneficial to employ high performance RCMV-PWM methodsfor the purpose of CMV/CMC reduction. It is shown that including a small CMI further enhances the CMC performance of a drive. Such a configuration provides comparable CMC performance to that of a three-level NPC-VSI and it is more favorable as it is more economical and efficient. The experiments involve a 4-kW, 4-pole induction motor driven by a two-level VSI and a three-level NPC-VSI with diode rectifier front-ends supplied from the three-phase 400 V, 50 Hz power line.

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Section: Rcmv-pwm Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

On the Contribution of PWM Methods to the Common Mode (Leakage) Current in Conventional Three-Phase Two-Level Inverters as Applied to AC Motor Drives

Hava

Cetin

Ün

2008

2008 IEEE Industry Applications Society Annual Meeting

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“…RCMV-PWM algorithms can be divided into three groups: active zero state PWM (AZSPWM) algorithms [7]- [16], remote state PWM (RSPWM) algorithms [14], and near state PWM (NSPWM) algorithms [12], [14], [16]. In addition, the AZSPWM algorithms can be further divided into AZSPWM1 [7]- [14], [16], AZSPWM2 [13]- [15], and AZSPWM3 [8], [13], [14] algorithms. When these algorithms synthesize the reference voltage vector, the AZSPWM algorithms use three or four active voltage vectors including two active opposite voltage vectors instead of zero voltage vectors.…”

Section: Introductionmentioning

confidence: 99%

A New Active Zero State PWM Algorithm for Reducing the Number of Switchings

Yun¹,

Baik²,

Kim³

et al. 2017

Journal of Power Electronics

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To reduce common-mode voltage (CMV), various reduced CMV pulse width modulation (RCMV-PWM) algorithms have been proposed, including active zero state PWM (AZSPWM) algorithms, remote state PWM (RSPWM) algorithms, and near state PWM (NSPWM) algorithms. Among these algorithms, AZSPWM algorithms can reduce CMV, but they increase the number of switchings compared to the conventional space vector PWM (CSVPWM). This paper presents a new AZSPWM algorithm for reductions in both the CMV and total number of switchings in BLAC motor drives. Since the proposed AZSPWM algorithm uses only active voltage vectors for motor control, it reduces CMV by 1/3 compared to CSVPWM. The proposed AZSPWM algorithm also reduces the total number of switchings compared to existing AZSPWM algorithms by eliminating the switchings required from one sector to the next. The performance of the proposed algorithm is verified by analyses, simulations, and experimental results.

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“…The advantages and drawbacks of these existing approaches are analyzed. On the basis of these results, a switching strategy has been developed, which exhibits the advantages of SVPWM, a pulse width modulation method without using the null switching states method (NSVM), (5)(6)(7) and the measurement vector insertion method (MVIM). (8) In particular, MVIM is employed in the low-modulation-ratio region and the sector boundary region of the middle-modulation-ratio region, while the NSVM is used in the sector boundary region of the highmodulation-ratio region.…”

Section: Introductionmentioning

confidence: 99%

3-Phase Current Reconstruction of Permanent Magnet Synchronous Motor Drives Using a Single DC-Link Current Sensor

2016

Sensors and Materials

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In the application of conventional 3-phase current reconstruction methods using a single DC-link current shunt, the self-switch configuration of space vector pulse width modulation (SVPWM) may cause a problem of insufficient measuring time in certain regions. To cope with this problem, in this paper, we propose a switching strategy that exploits the advantages of SVPWM, the measurement vector insertion method (MVIM), and the pulse-width modulation method without using the null switching states method (NSVM). In the proposed switching strategy, the MVIM is employed in the low-modulation-ratio region and the sector boundary region of the middle-modulation-ratio region, while the NSVM is adopted in the sector boundary region of the high-modulation-ratio region. In addition, we used Matlab/Simulink in this study to construct a simulated environment to conduct an in-depth study of the differences among various current construction methods as well as the size of the immeasurable region.

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Optimal Common-Mode Voltage Reduction PWM Technique for Inverter Control With Consideration of the Dead-Time Effects—Part I: Basic Development

Cited by 221 publications

References 17 publications

On the Contribution of PWM Methods to the Common Mode (Leakage) Current in Conventional Three-Phase Two-Level Inverters as Applied to AC Motor Drives

On the Contribution of PWM Methods to the Common Mode (Leakage) Current in Conventional Three-Phase Two-Level Inverters as Applied to AC Motor Drives

A New Active Zero State PWM Algorithm for Reducing the Number of Switchings

3-Phase Current Reconstruction of Permanent Magnet Synchronous Motor Drives Using a Single DC-Link Current Sensor

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