High-Frequency SiC Three-Phase VSIs With Common-Mode Voltage Reduction and Improved Performance Using Novel Tri-State PWM Method

Xu, Junzhong; Han, Jingwen; Wang, Yong; Ali, Muhammad; Tang, Houjun

doi:10.1109/tpel.2018.2829530

Cited by 42 publications

(31 citation statements)

References 29 publications

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“…Therefore, a hybrid CMV reduction technique should be utilized between CMVR2 and CMVR3 methods in order to effectively reduce the CMV with a wide operating region range. In addition, as concluded from [14] in the case of threephase VSIs, without changing the CMV reduction strategies, the use of high frequency Silicon Carbide (SiC) devices instead of the traditional Silicon devices in the implementation of the power circuit improve the inverter switching characteristics and input/output waveform quality, especially when the CMV reduction strategies are applied.…”

Section: E Harmonic Flux Analysismentioning

confidence: 99%

“…However, most of these techniques correspond to a relatively high Common-Mode Voltage (CMV) and high rates of / , which are the source of serious impacts on drive systems. The main impacts are faster degradation of the motor bearings due to leakage currents, failure of winding insulation, fault activation of current detection circuits, undesirable electromagnetic interference (EMI) and even mechanical vibration [13], [14]. Typically, 10% of the CMV appears between the motor shaft and frame, allowing leakage currents in the bearings [15].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Scalar PWM Approach With Optimal Common-Mode Voltage Reduction Technique for Five-Phase Inverters

Dabour

Abdel‐Khalik

Massoud

et al. 2019

IEEE J. Emerg. Sel. Topics Power Electron.

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Research on Common-Mode-Voltage (CMV) reduction in multiphase drive systems has recently met an intensified interest in the available literature. This paper first explores two existing space-vector-based CMV reduction schemes for five-phase Voltage Source Inverters (VSIs), denoted as CMVR1 and CMVR2, which reduce the CMV by 40% and 80%, respectively. Moreover, a new space-vector-based CMV reduction scheme, termed as CMVR3, is proposed that not only minimizes the CMV but also reduces the overall switching losses when compared with the other schemes. The optimal duty cycles and the switching sequence of all scheme are introduced. Since the implementation of space-vector-based schemes using lookup tables is a relatively complex and time-consuming process, this paper proposes a simpler scalar PWM approach. This approach can easily be implemented using embedded PWM modules of most commercial Digital Signal Processors (DSPs). To evaluate the performance of the presented CMV reduction schemes, a detailed evaluation study is presented. The optimal CMVR scheme over the full modulation index range is also highlighted. The theoretical findings are verified using a prototype five-phase induction machine through simulations and experimentally.

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Section: E Harmonic Flux Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Scalar PWM Approach With Optimal Common-Mode Voltage Reduction Technique for Five-Phase Inverters

Dabour

Abdel‐Khalik

Massoud

et al. 2019

IEEE J. Emerg. Sel. Topics Power Electron.

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“…Pulse-Width Modulated (PWM) voltage source converters (VSCs) are the main building blocks for interfacing distributed generation (DG) units, power flow control and emerging smart loads with hybrid ac-dc distribution grids [1]- [4]. Continuous PWM strategy such as Sinusoidal PWM (S-PWM) is widely used for the modulation of VSCs due to the simplicity and better harmonics performance, instead of discontinuous PWM strategies [5], [6]. LCL filter is preferably adopted in VSCs for attenuating high frequency harmonics in the output waveforms.…”

Section: Introductionmentioning

confidence: 99%

Virtual Resistor Active Damping with Selective Harmonics Control of LCL-Filtered VSCs

Soeiro

Shekhar

et al. 2021

2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC)

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LCL filter is widely adopted for strict standard compliance of grid-tied voltage source converters (VSCs). The third order low-pass filtering provides great attenuation for the high frequency harmonics generated by the power electronics guaranteeing low output currents noise injection into the grid. A major concern of the implementation of the LCL-filter is to safeguard the system stability by providing effective damping of the filter resonances. Active damping methods are preferred because it does not result in substantial power losses as it would result by the utilization of passive damping circuits. Capacitor-current active damping (CCAD) technique can be effective while realizing only a proportional feedback. However, the suitable feedback gain for maintaining stability remains to be identified. Another control issue related to the grid-tied VSC is the harmonics compensation of the currents due to the grid voltage distortion. Therefore, this paper proposes an improved resonator with phase compensation to suppress the harmonics distortion while maintaining stability with properly design capacitor current feedback. The capacitor feedback gain for stability is analytically derived in this paper. The proposed control scheme is verified by both simulation and experimental results.

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“…Active zero state-space vector PWM (AZ-SVPWM), remote state SVPWM (RS-SVPWM), and near state SVPWM (NS-SVPWM) are the most popular modulation-based CMV reduction methods. These modulation methods have been discussed in many research works [26]- [28]. For AZ-SVPWM, the traditional zero states of the inverter are replaced by two active vectors in opposite directions with the same time as zero vector.…”

Section: Introductionmentioning

confidence: 99%

Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter With Common-Mode Voltage Reduction

et al. 2020

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In a single-stage buck-boost quasi-switched boost inverter (qSBI), the shoot-through state insertion causes high amplitude common-mode voltage. Consequently, the qSBI becomes less attractive in transformerless photovoltaic (PV) systems. In this paper, a novel space vector pulse-width modulation for a modified qSBI is introduced to reduce the magnitude of common-mode voltage and push the modulation index up to 1. By properly choosing the shoot-through interval time, shoot-through states are considered to be inserted for boosting voltage and also reducing the THD value of the output voltage. The mathematical analysis and operating principles of the converter are discussed and verified through PSIM simulations. Finally, an experimental prototype is validated based on a TMS320F28335 DSP microcontroller and a DE0-Nano FPGA digital control platform. INDEX TERMS Z-source inverter, quasi-switched boost inverter, single-stage inverter, common-mode voltage, transformerless PV system, space vector pulse-width modulation.

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High-Frequency SiC Three-Phase VSIs With Common-Mode Voltage Reduction and Improved Performance Using Novel Tri-State PWM Method

Cited by 42 publications

References 29 publications

Analysis of Scalar PWM Approach With Optimal Common-Mode Voltage Reduction Technique for Five-Phase Inverters

Analysis of Scalar PWM Approach With Optimal Common-Mode Voltage Reduction Technique for Five-Phase Inverters

Virtual Resistor Active Damping with Selective Harmonics Control of LCL-Filtered VSCs

Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter With Common-Mode Voltage Reduction

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