On the feasibility of four-switch three-phase BLDC motor drives for low cost commercial applications: topology and control

Lee, Byoung-Kuk; Kim, T.H.; Ehsani, M.

doi:10.1109/apec.2001.911682

Cited by 24 publications

(36 citation statements)

References 7 publications

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“…Traditional DCC (direct current control) technique employs current hysteresis control [3,10]. Normally, sixpossible voltage space vectors of four-switch topology are supposed to be used in Table 2 as shown in Figs.…”

Section: Optimal Switching Tablementioning

confidence: 99%

“…But the uncontrollable phase current causes unsymmetrical voltage vector in FSTPI, and its waveform is much of distortion from rectangular [3]. A new speed control method using the acceleration feed forward compensation is proposed to improve the speed response characteristic for a fourswitch three-phase BLDCM [4].…”

Section: Introductionmentioning

confidence: 99%

“…FSTPI (four-switch three phase inverter) as a reconfiguration topology for fault condition of traditional six switch inverter has been widely used [3][4][5]. But the uncontrollable phase current causes unsymmetrical voltage vector in FSTPI, and its waveform is much of distortion from rectangular [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Space Vector modulation Scheme and Direct Torque Control for Four-switch BLDCM Using Flux Observer

Pan¹,

Wang²,

Su³

et al. 2015

Journal of Electrical Engineering and Technology

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-The main purpose of this paper is to describe a DTC (direct torque control) method for four-switch brushless dc motor (BLDCM) drive. In the method, a novel voltage space vector modulation scheme, an optimal switching table, and a flux observation method are proposed. Eight voltage vectors are summarized, which are selected to control BLDCM in SVPWM pattern, and an optimal switching table is proposed to improve the torque distortion caused by midpoint current of the split capacitors. Unlike conventional flux observers, this observer does not require speed adaptation and is not susceptible to speed estimation errors, especially, at low speed. Global asymptotic stability of the flux observer is guaranteed by the Lyapunov stability analysis. DC-offset effects are mitigated by introducing a PI component in the observer gains. This method alleviates the undesired current and torque distortion which is caused by uncontrollable phase. The correctness and feasibility of the method are proved by simulation and experimental results.

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Section: Optimal Switching Tablementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Space Vector modulation Scheme and Direct Torque Control for Four-switch BLDCM Using Flux Observer

Pan¹,

Wang²,

Su³

et al. 2015

Journal of Electrical Engineering and Technology

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show abstract

“…[7]에서 는 B4 인버터에서 발생하는 DC 링크단의 불평형 현상 의 원인과 결과를 자세히 분석하였다. 최근에 B4 인버터는 유도전동기에 대한 적용뿐만 아 니라 영구자석전동기에 적용하는 연구도 활발히 진행되 고 있다 [8][9][10] . 또한 B4 인버터는 저가격회로에 대한 적용 뿐만 아니라, 인버터 고장시의 비상운전 등을 위한 수단 으로 연구되고 있다 [11] .…”

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Performance Improvement of B4 Inverters by Adding Compensation Voltage

Lee

2013

The Transactions of the Korean Institute of Power Electronics

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-This paper proposes a current ripple reduction method to improve the control performance of B4 type inverter that is studied for cost-effective drive systems. B4 inverters employ only four switches and they have a center-tapped connection between the split dc-link capacitors and one phase of a three-phase motor or load. In the B4 topology, unbalanced three-phase voltages will be generated due to the dc-link voltage ripple. To solve this problem, this paper presents a voltage distortion compensation method that adjusts the voltage reference with the consideration of dc-link voltage ripple. The validity of the proposed method is verified by simulation and excremental results with an induction machine.

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“…B4 inverters are researched as a low cost driving scheme for induction motors as well as brushless DC motors [9][10][11]. Also they are considered as a provision for the emergency operation against inverter failure [12].…”

Section: Introductionmentioning

confidence: 99%

A Simple Current Ripple Reduction Method for B4 Inverters

Lee¹,

Park²,

Toliyat³

2013

Journal of Electrical Engineering and Technology

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-This paper proposes a simple current compensation method to improve the control performance of B4 inverters. Four-switch inverters so called B4 inverters employ only four switches. They have a split dc-link and one phase of three-phase motors is connected to the center-tap of split dclink capacitors in B4 inverters. The voltage ripples in the center tap of the dc-link generate unbalanced three-phase voltages causing current ripples. To solve this problem, this paper presents a simple compensation method that adjusts switching times considering dc-link voltage ripples. The validity of the proposed method is verified by simulations and experiments carried out with a 1 HP induction machine.

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On the feasibility of four-switch three-phase BLDC motor drives for low cost commercial applications: topology and control

Cited by 24 publications

References 7 publications

A Novel Space Vector modulation Scheme and Direct Torque Control for Four-switch BLDCM Using Flux Observer

A Novel Space Vector modulation Scheme and Direct Torque Control for Four-switch BLDCM Using Flux Observer

Performance Improvement of B4 Inverters by Adding Compensation Voltage

A Simple Current Ripple Reduction Method for B4 Inverters

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