A Simple Current Ripple Reduction Method for B4 Inverters

Lee, Dong-Myung; Park, Jae-Bum; Toliyat, H.A.

doi:10.5370/jeet.2013.8.5.1062

Cited by 10 publications

(9 citation statements)

References 16 publications

(15 reference statements)

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“…1. One phase of the load is connected to the center point of their DC power source [1,[4][5]. On the other hand, conventional B6 inverters (two-level inverters) have six switches without split dc-link.…”

Section: Pole Voltage Commands In B4 Topologymentioning

confidence: 99%

“…With manipulation of (3) for a v ′ and application of (2), modified a-pole voltage can be expressed as (4 …”

Section: Proposed Compensation Scheme Of Distortions In Phase Voltagesmentioning

confidence: 99%

“…In order to solve this problem, various researches have been performed [4][5]. A simple compensation method that adjusts switching times considering the dc-link voltage ripples was proposed in [4]. In a current ripple reduction scheme that mitigates the degradation of control performance due to the voltage difference between dc-link capacitors was presented in [5].…”

Section: Introductionmentioning

confidence: 99%

“…This voltage difference causes distortions in three phase voltages. In order to solve this problem, various researches have been performed [4][5]. A simple compensation method that adjusts switching times considering the dc-link voltage ripples was proposed in [4].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Sensorless Control of PMSM by a Four-Switch Inverter with Compensation of Voltage Distortion and Adjustment of Position Estimation Gain

Kim¹,

Lee²

2017

Journal of Electrical Engineering and Technology

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-This paper proposes performance improvement schemes for sensorless PMSM control drive using a four-switch three-phase inverter (so-called B4 inverter). In the proposed scheme, the back-EMF estimation-based sensorless control algorithm is used to control the brushless PMSM without position sensors. In order to have stable operation, this paper presents a gain adjustment scheme that compensates the reduction of stable sensorless operation range as long as the rotor speed increases. In B4 topology, the center point of dc-link capacitors is connected to 3-phase load, and it is prone to have the load current distortion. Hence, to mitigate this problem, a distortion compensation scheme by modifying voltage commands using measured dc-link potentials is proposed in this paper. The validity of the proposed method is evaluated by simulations and experiments.

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Section: Pole Voltage Commands In B4 Topologymentioning

confidence: 99%

“…With manipulation of (3) for a v ′ and application of (2), modified a-pole voltage can be expressed as (4 …”

Section: Proposed Compensation Scheme Of Distortions In Phase Voltagesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sensorless Control of PMSM by a Four-Switch Inverter with Compensation of Voltage Distortion and Adjustment of Position Estimation Gain

Kim¹,

Lee²

2017

Journal of Electrical Engineering and Technology

Self Cite

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show abstract

“…This problem does not exist in conventional 2-level inverters having a single dc-link capacitor. Many studies have been conducted to overcome this problem [7][8][9][10]. In [7], switching times are calculated by using measured dc-link voltages to take into account the voltage difference between upper and lower capacitors in the split dc-link.…”

Section: Introductionmentioning

confidence: 99%

Analytic Model of Four-switch Inverter-fed Driving System for Wye or Delta-connected Motor with Current Ripple Reduction Scheme

Lee¹,

Jung²,

Heo³

et al. 2016

Journal of Electrical Engineering and Technology

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-This paper proposes an analytic model for four-switch inverter (FSI)-driven wye (Y) or delta (Δ)-connected motors with a current ripple reduction algorithm. FSIs employ four switches in controlling three-phase load instead of using six switches. They have split dc-link stage, and due to this inherent structure there exists the voltage difference between upper and lower capacitors, which results in distortion of the inverter output voltage. To study characteristics of FSIs, this paper presents an advanced simulation models of FSI-driven control system for 3-phase motor that can has a wire connection either Y or Δ. In addition, this paper introduces a current ripple reduction scheme that mitigates degradation of control performance due to the voltage difference between the dc-link capacitors. The validity of the proposed method and the analytic model is verified by simulations and experiments carried out with 1-HP induction machine with Y or Δ-connection

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Hybrid predictive control strategy for a low‐cost converter‐fed IM drive

Shi

Sun

et al. 2018

IET Electric Power Applications

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The converter consisting of a single-phase half-bridge rectifier and four-switch three-phase inverter is a low-cost power converter with complicated operating constraints. It is difficult to control by the conventional strategies. This study proposes a hybrid predictive control strategy with dual loops for this converter. In the outer loop, a proportional-integral controller is designed to regulate the dc-link voltage, capacitor voltage balancing, and the speed and flux of induction motors (IM). Also, in the inner loop, the finite set model predictive control is employed to control the ac input current and stator currents of the IM. The major advantages of the control strategy include: (i) easy to deal with complicated constraints and manage multiple control targets; (ii) without the need of modulators; (iii) good dynamic response. The simulation and experimental results indicate that the proposed method can guarantee the stable operation and good performance.

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A Simple Current Ripple Reduction Method for B4 Inverters

Cited by 10 publications

References 16 publications

Sensorless Control of PMSM by a Four-Switch Inverter with Compensation of Voltage Distortion and Adjustment of Position Estimation Gain

Sensorless Control of PMSM by a Four-Switch Inverter with Compensation of Voltage Distortion and Adjustment of Position Estimation Gain

Analytic Model of Four-switch Inverter-fed Driving System for Wye or Delta-connected Motor with Current Ripple Reduction Scheme

Hybrid predictive control strategy for a low‐cost converter‐fed IM drive

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