Synchronized SVPWM Algorithm for the Overmodulation Region of a Low Switching Frequency Medium-Voltage Three-Level VSI

Beig, Abdul R.

doi:10.1109/tie.2011.2182016

Cited by 58 publications

(34 citation statements)

References 27 publications

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“…(12) In sector I, the reference voltages are: (13) where m is the linear modulation index using the proposed PWM scheme. Substituting Equation (13) into Equation (12), the allowable range of the m can be deduced as follow:…”

Section: Maximum Linear Modulation Index Of the Proposed Pwm Strategymentioning

confidence: 99%

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Simplified PWM Strategy for Neutral-Point-Clamped (NPC) Three-Level Converter

Ye¹,

Xu²,

Li³

et al. 2014

Journal of Power Electronics

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A novel simplified pulse width modulation(PWM) strategy for neutral point clamped (NPC) three-level converter is proposed in this paper.The direct output voltage modulation is applied to reduce the calculation time. Based on this strategy, several optimized control methods are proposed. The neutral point potential balancing algorithm is discussed and a fine neutral point potential balancing scheme is introduced. Moreover, the minimum pulse width compensation and switching losses reduction can be easily achieved using this modulation strategy. This strategy also gains good results even with the unequal DC link capacitor. The modulation principle is studied in detail and the validity of this simplified PWM strategy is experimentally verified in this paper. The experiment results indicated that the proposed PWM strategy has excellent performance, and the neutral point potential can be balanced well with unequal DC link captaincies.

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Section: Maximum Linear Modulation Index Of the Proposed Pwm Strategymentioning

confidence: 99%

“…† Corresponding Author: yezongbin@163.com Tel: +86-13685164101, China University of Mining and Technology losses. In [12], a synchronized SVPWM algorithm was presented. Three-level converter eliminated subharmonics using this control algorithm for the over modulation region.…”

Section: Introductionmentioning

confidence: 99%

Simplified PWM Strategy for Neutral-Point-Clamped (NPC) Three-Level Converter

Ye¹,

Xu²,

Li³

et al. 2014

Journal of Power Electronics

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“…Multi-level inverters have been widely used in high power and medium voltage conversions [1], [2]. As a result, their topologies and control strategies have been the focus of a lot of research.…”

Section: Introductionmentioning

confidence: 99%

A Neutral-Point Voltage Balance Controller for the Equivalent SVPWM Strategy of NPC Three-Level Inverters

Lyu¹,

Hu²,

Wu³

et al. 2016

Journal of Power Electronics

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Based on the space vector pulse width modulation (SVPWM) theory, this paper realizes an easier SVPWM strategy, which is equivalently implemented by CBSPWM with zero-sequence voltage injection. The traditional SVPWM strategy has no effect on controlling the neutral-point voltage balance. In order to solve the neutral-point voltage unbalance problem for neutral-point-clamped (NPC) three-level inverters, this paper proposes a neutral-point voltage balance controller. The proposed controller realizes controlling the neutral-point voltage balance by dynamically calculating the offset superimposed to the three-phase modulation waves of an equivalent SVPWM strategy. Compared with the traditional SVPWM strategy, the proposed neutral-point voltage balance controller has a strong ability to balance the neutral-point voltage, has good steady-state performance, improves the output waveforms quality and is easy for digital implementation. An experiment has been carried out on a NPC three-level inverter prototype based on a digital signal processor-complex programmable logic device (DSP-CPLD). The obtained experimental results verify the effectiveness of the proposed neutral-point voltage balance controller.

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“…However, the converters aren't suitable for high power application, as the power semiconductors and magnetic components will face severe current stress. The SVPWM algorithm has been widely applied in three-phase AC/DC conversion applications [13][14][15]. Most of the recent researches are focused on the SVPWM algorithm for three-phase three-level rectifier and inverter and nonisolated converter.…”

Section: Introductionmentioning

confidence: 99%

A single-stage three-phase AC/DC converter with Y-Δ three-phase transformer

Jin

2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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400V DC power supply architecture for data center has been demonstrated to possess superior efficiency, power density and reliability compared with traditional ac architecture. A three-phase AC/DC converter is needed as the front rectifier to convert three-phase 380V AC voltage to 400V DC voltage. To achieve buck-boost AC/DC conversion and electrical isolation as well, this paper proposes a single-stage three-phase AC/DC converter with Y-Δ three-phase transformer. It achieves unity power factor, high-frequency electrical isolation, and adjustable output voltage with single-stage structure. To guarantee the voltage-second balance of three-phase transformer, the modified SVPWM algorithm is proposed. The operation principles and SVPWM algorithm are presented specifically. To verify the theoretical analysis, a 3kW prototype based on the proposed converter and SVPWM algorithm was built in the lab. And the experimental results show the good characteristics of the converter well.

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Synchronized SVPWM Algorithm for the Overmodulation Region of a Low Switching Frequency Medium-Voltage Three-Level VSI

Cited by 58 publications

References 27 publications

Simplified PWM Strategy for Neutral-Point-Clamped (NPC) Three-Level Converter

Simplified PWM Strategy for Neutral-Point-Clamped (NPC) Three-Level Converter

A Neutral-Point Voltage Balance Controller for the Equivalent SVPWM Strategy of NPC Three-Level Inverters

A single-stage three-phase AC/DC converter with Y-Δ three-phase transformer

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Synchronized SVPWM Algorithm for the Overmodulation Region of a Low Switching Frequency Medium-Voltage Three-Level VSI

Cited by 58 publications

References 27 publications

Simplified PWM Strategy for Neutral-Point-Clamped (NPC) Three-Level Converter

Simplified PWM Strategy for Neutral-Point-Clamped (NPC) Three-Level Converter

A Neutral-Point Voltage Balance Controller for the Equivalent SVPWM Strategy of NPC Three-Level Inverters

A single-stage three-phase AC/DC converter with Y-&#x0394; three-phase transformer

Contact Info

Product

Resources

About

A single-stage three-phase AC/DC converter with Y-Δ three-phase transformer