Analysis of Cascaded H-Bridge Multilevel Inverter in DTC-SVM Induction Motor Drive for FCEV

Gholinezhad, Javad; Noroozian, Reza

doi:10.5370/jeet.2013.8.2.304

Cited by 13 publications

(8 citation statements)

References 32 publications

(39 reference statements)

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“…Three-phase voltage source inverters (VSIs) with proportional-integral (PI) control methods with distinct pulse width modulation (PWM) blocks have been popularly used to provide output currents with controllable amplitude and controllable frequency [1][2][3][4][5][6][7][8]. In the VSI, common-mode voltages generated by the fast switching operation have been known to give rise to overvoltage stress to the winding insulation of drives and to conduct or radiate electromagnetic interference, which can affect the functionality of other electronic systems in the vicinity [9].…”

Section: Introductionmentioning

confidence: 99%

Model Predictive Control Methods to Reduce Common-Mode Voltage for Three-Phase Voltage Source Inverters

Kwak

Mun

2015

IEEE Trans. Power Electron.

146

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In this paper, we propose model predictive control methods to reduce the common-mode voltage of three-phase voltage source inverters (VSIs). In the reduced common-mode voltage-model predictive control (RCMV-MPC) methods proposed in this paper, only nonzero voltage vectors are utilized to reduce the common-mode voltage as well as to control the load currents. In addition, two nonzero voltage vectors are selected from the cost function at every sampling period, instead of using only one optimal vector during one sampling period. The two selected nonzero vectors are distributed in one sampling period in such a way as to minimize the error between the measured load current and the reference. Without utilizing the zero vectors, the common-mode voltage controlled by the proposed RCMV-MPC algorithms can be restricted within ±V dc /6. Furthermore, application of the two nonzero vectors with optimal time sharing between them can yield satisfactory load current ripple performance without using the zero vectors. Thus, the proposed RCMV-MPC methods can reduce the common-mode voltage as well as control the load currents with fast transient response and satisfactory load current ripple performance compared with the conventional model predictive control method. Simulation and experimental results are included to verify the effectiveness of the proposed RCMV-MPC methods.Index Terms -Predictive control, common-mode voltage, current control, voltage source inverter. 0885-8993 (c) reference, the current controller evaluates all the predicted current values obtained by the seven possible states to select one optimal switching state with the smallest cost value. Finally, the VSI with the model predictive controller applies the optimal switching state during the entire sampling period of the controller. Because of its simplicity with no requirement of individual PWM blocks as well as its control flexibility, the model predictive control scheme has been employed to control the load currents of power converters other than VSIs, such as multilevel inverters, multiphase inverters, active power filters, and matrix converters [14][15][16][17][18][19][20][21][22][23][24][25][26].This paper proposes two reduced common-mode voltage-model predictive control (RCMV-MPC) methods to reduce the common-mode voltage of three-phase VSIs on the basis of the model predictive control method. In the proposed RCMV-MPC methods, only six nonzero VSI states are considered to perform model predictive control to reduce the common-mode voltage by avoiding the zero vectors. Furthermore, the proposed methods utilize two nonzero voltage states in one sampling period in order to compensate for the reduced number of voltage states, instead of using only one optimal vector during one sampling period as in the conventional method. The two selected active vectors are distributed within the sampling period in such a way as to minimize the squared current errors between the reference and actual future load currents in the proposed methods. Therefore, the common-mode volta...

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Section: Introductionmentioning

confidence: 99%

Model Predictive Control Methods to Reduce Common-Mode Voltage for Three-Phase Voltage Source Inverters

Kwak

Mun

2015

IEEE Trans. Power Electron.

146

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“…After convolution with h and g quadrature mirror filters, it is decomposed into an approximation component c 1 [n] and a detail component d 1 [n] at scale 1. Then approximation component c 1 [n] is further decomposed into c 2 [n] and d 2 [n] at the next scale and so on. This type of hierarchical decomposition can be mathematically represented as,…”

Section: Concept Of Discrete Wavelet Transform and Feature Extractionmentioning

confidence: 99%

“…The major advantages of multilevel inverters are the reduction in harmonic distortion of output voltage waveform with increase in number of levels and flexibility to use a set of batteries or fuel cells in any intermediate stages [1][2][3]. Even though multilevel inverters have made their way successfully to the industrial applications with a proven technology, failure of power electronic switches and its fault diagnosis is still a hot research topic of many researchers.…”

Section: Introductionmentioning

confidence: 99%

Identification of Open-Switch and Short-Switch Failure of Multilevel Inverters through DWT and ANN Approach using LabVIEW

Parimalasundar¹,

Vanitha²

2015

Journal of Electrical Engineering and Technology

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-In recent times, multilevel inverters are given high priority in many large industrial drive applications. However, the reliability of multilevel inverters are mainly affected by the failure of power electronic switches. In this paper, open-switch and short-switch failure of multilevel inverters and its identification using a high performance diagnostic system is discussed. Experimental and simulation studies were carried out on five level cascaded H-Bridge multilevel inverter and its output voltage waveforms were analyzed at different switch fault cases and at different modulation index values. Salient frequency domain features of the output voltage signal were extracted using the discrete wavelet transform multi resolution signal decomposition technique. Real time application of the proposed fault diagnostic system was implemented through the LabVIEW software. Artificial neural network was trained offline using the Matlab software and the resultant network parameters were transferred to LabVIEW real time system. In the proposed system, it is possible to precisely identify the individual faulty switch (may be due to open-switch (or) short-switch failure) of multilevel inverters.

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“…A typical hardware method reported in [3,12] uses the combination of a multi-winding phase shifting transformer and uncontrollable rectifiers. Ref.…”

Section: Introductionmentioning

confidence: 99%

“…Cascaded STATCOM is characterized by large voltage levels, small harmonic current, high system efficiency, small and few passive components and ease of expansion [1][2][3], and hence leading the trend of FACTS (Flexible Alternative Current Transmission Systems) technology development [4]. Moreover, it's an effective way to solve the power quality problems in high voltage and high power applications.…”

Section: Introductionmentioning

confidence: 99%

Chopper Controller Based DC Voltage Control Strategy for Cascaded Multilevel STATCOM

Xiong¹,

Zhuo²

2014

Journal of Electrical Engineering and Technology

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-The superiority of CMI (Cascaded Multilevel Inverter) is unparalleled in high power and high voltage STATCOM (Static Synchronous Compensator). However, the parameters and operating conditions of each individual power unit composing the cascaded STATCOM differ from unit to unit, causing unit voltage disequilibrium on the DC side. This phenomenon seriously impairs the operation performance of STATCOM, and thus maintaining the DC voltage balance and stability becomes critical for cascaded STATCOM. This paper analyzes the case of voltage disequilibrium, combines the operation characteristics of the cascaded STATCOM, and proposes a new DC voltage control scheme with the advantages of good control performance and stability. This hierarchical control method uses software to achieve the total active power control and also uses chopper controllers to enable that the imbalance power can flow among the capacitors in order to keep DC capacitor voltages balance. The operating principle of the chopper controllers is analyzed and the implementation is presented. The major advantages of the proposed control strategy are that the number of PI regulators has been decreased remarkably and accordingly the blindness of system design and debugging also reduces obviously. The simulation reveals that the proposed control scheme can achieve the satisfactory control goals.

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Analysis of Cascaded H-Bridge Multilevel Inverter in DTC-SVM Induction Motor Drive for FCEV

Cited by 13 publications

References 32 publications

Model Predictive Control Methods to Reduce Common-Mode Voltage for Three-Phase Voltage Source Inverters

Model Predictive Control Methods to Reduce Common-Mode Voltage for Three-Phase Voltage Source Inverters

Identification of Open-Switch and Short-Switch Failure of Multilevel Inverters through DWT and ANN Approach using LabVIEW

Chopper Controller Based DC Voltage Control Strategy for Cascaded Multilevel STATCOM

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