Hybrid Selective Harmonic Elimination PWM for Common-Mode Voltage Reduction in Three-Level Neutral-Point-Clamped Inverters for Variable Speed Induction Drives

Zhao, Zhengming; Zhong, Yisheng; Gao, Hongwei; Yuan, Liqiang; Lü, Tao

doi:10.1109/tpel.2011.2162591

Cited by 97 publications

(29 citation statements)

References 20 publications

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“…The voltages of each level are substituted into (2), and the basic voltage vector, output from the inverter, can be obtained. Then the space vector for the three-level inverter is given in Fig.…”

Section: Svpwmmentioning

confidence: 99%

“…Multilevel inverter topologies have received special attention during the last two decades due to their significant contributions to medium/high-voltage and highpower applications [1], such as ac motor drives [2,3], electric energy quality management and reactive power compensation [4,5]. Even in low-power low-voltage fields, this topology is used in more and more applications [6,7].…”

Section: Introductionmentioning

confidence: 99%

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A Hybrid Modulation Strategy with Reduced Switching Losses and Neutral Point Potential Balance for Three-Level NPC Inverter

Jiang¹,

Gao²,

Wang³

et al. 2017

Journal of Electrical Engineering and Technology

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-In this paper, carrier-based pulse width modulation (CBPWM), space vector PWM (SVPWM) and reduced switching losses PWM (RSLPWM) for the three-level neutral point clamped (NPC) inverter are introduced. In the case of the neutral point (NP) potential (NPP) offset, an asymmetric disposition PWM (ASPDPWM) strategy is proposed, which can output PWM sequences correctly and suppress the lower order harmonics of the inverter effectively. An NPP balance strategy based on carrier based PWM (CBPWM) is analyzed. A hybrid modulation strategy combining RSLPWM and the NPP balance based on CBPWM is proposed, and hysteresis control is adopted to switch between the two modulation strategies. An experimental prototype of the three-level NPC inverter is built. The effectiveness of the hybrid modulation is verified with a resistance-inductance load and a permanent magnetic synchronous motor (PMSM) load, respectively. The experimental results show that reduced switching losses and an acceptable NPP can be effectively achieved in the hybrid modulation strategy.

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Section: Svpwmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Hybrid Modulation Strategy with Reduced Switching Losses and Neutral Point Potential Balance for Three-Level NPC Inverter

Jiang¹,

Gao²,

Wang³

et al. 2017

Journal of Electrical Engineering and Technology

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show abstract

“…The modified modulation signals u rap , u ran , u rbp , and u rbn can be rewritten as Equ. (20). u z is used to adjust the duty ratios of redundant states to achieve the intended neutral-point voltage balancing control.…”

Section: Neutral-point Voltage Balancing Controlmentioning

confidence: 99%

“…Optimal modulation algorithms in converter control systems are viewed as alternative solutions to suppress high-order harmonics as they do not require additional hardware devices. Selective harmonic elimination pulse width modulation (SHEPWM) can generally eliminate a number of unwanted harmonics in the pulse voltage of converters [20]- [22]. However, it requires numerous complicated calculations and digital memory resources.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid CBPWM Scheme for Single-Phase Three-Level Converters

Wang¹,

Song²,

Feng³

et al. 2016

Journal of Power Electronics

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A novel hybrid carrier-based pulse width modulation (CBPWM) scheme that combines unipolar and dipolar modulations is proposed for single-phase three-level rectifiers, which are widely applied in railway traction drive systems. The proposed CBPWM method can satisfy the volt-second balancing principle in the complete modulation index region through overmodulation compensation. The modulation scheme features two modulation modes: unipolar and dipolar. The operation range limits of these modulation modes can be modified by changing the separation coefficient. In comparison with the traditional unipolar CBPWM, the proposed hybrid CBPWM scheme can provide advantageous features, such as lower high-order harmonic distortion of the line current and better utilization of switching frequency. The separation coefficient value is optimized to achieve the maximum utilization of these advantages. The experimental results verify the feasibility and effectiveness of the proposed hybrid CBPWM scheme.

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“…Some begin with the power converter gain equaling one or any other value according to the filter type, but it will be commonly noted that better performance is obtained with other gain values, especially when considering source and load nonlinearities, making active or hybrid filter design difficult when guessing the initial feasible values for its parameters. In other words, achieving hybrid filter parameters, performance, and interaction with the utility grid at a programmable optimization level is not as simple as with passive filters [10]- [13]. Any harmonic filter design must achieve the optimal solution whilst satisfying many objectives; generally, these objectives might conflict with each other.…”

Section: Introductionmentioning

confidence: 99%

Optimal multiobjective design of hybrid active power filters considering a distorted environment

Zobaa

2014

IEEE Trans. Ind. Electron.

102

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Abstract-The development of new passive, active and hybrid filtering techniques is important, and the issues of higher quality, reduced complexity, higher efficiency, and lower cost are important conditions that need to be addressed with regard to the expected stringent trends in power quality obligations. This paper suggests a new approach for the optimal sizing of hybrid active power filter (HAPF) parameters, presented for three-phase industrial power systems. Hybrid filter topology can be used to compensate harmonic currents as well as for power factor corrections, without concern for importing and exporting harmonics, or simply the series and parallel resonance that may occur. The new trend in harmonic power filter design is not to obtain the best solution from a single objective optimization, but to obtain a good compromise solution accomplished under other conflicting objectives. FORTRAN Feasible Sequential Quadratic Programming (FFSQP) is used to determine the proposed filter optimal sizing to minimize the total voltage harmonic distortion as the main objective function, where maintaining the load power factor at an acceptable limit is desired. If the total harmonic voltage distortion achieves the specified goal, then the objective is redirected into minimizing the resultant voltage and current total harmonic distortions. The optimal design of the HAPF is analyzed by means of three case studies.

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Hybrid Selective Harmonic Elimination PWM for Common-Mode Voltage Reduction in Three-Level Neutral-Point-Clamped Inverters for Variable Speed Induction Drives

Cited by 97 publications

References 20 publications

A Hybrid Modulation Strategy with Reduced Switching Losses and Neutral Point Potential Balance for Three-Level NPC Inverter

A Hybrid Modulation Strategy with Reduced Switching Losses and Neutral Point Potential Balance for Three-Level NPC Inverter

A Hybrid CBPWM Scheme for Single-Phase Three-Level Converters

Optimal multiobjective design of hybrid active power filters considering a distorted environment

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