
Mostafa AbarzadehSmartD Technologies · Research & Development
Mostafa Abarzadeh
PhD
About
64
Publications
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Introduction
Mostafa Abarzadeh, (Ph.D., Sc.D., IEEE Senior Member) is a Senior R&D Power Electronics Designer at SmartD Technologies, Montreal, Canada. His research interests include wide band gap (WBG) based high performance and high power density power electronic converters as well as topology, modeling, control and modulation of power electronic converters, hybrid multilevel inverters, and industrial applications of power electronic converters.
Publications
Publications (64)
A new single-carrier sensor-less pulse-width modulation (PWM) method using suggested pseudo reference functions is proposed for packed U-cell (PUC) converter to improve performance and reliability of the PUC converter. It is comprised of one PWM carrier signal, and two suggested pseudo reference functions. By employing the proposed modulation metho...
In this paper, a new configuration of modular multilevel converter (MLC) based on parallel connection of 3-level active-neutral-point-clamped (3L-ANPC) cells as well as its improved modulation method are proposed for 1MHz, 1MW EV mega-charger. In the proposed paralleled modular ANPC MLC, only six high frequency silicon carbide (SiC) power switches...
In this paper, a novel generalized circuit topology of n-time quadrupled-hybrid-neutral-pointclamped (Qn-HNPC) converter and a new decomposed sensor-less modulation method are proposed to multiply the number of output voltage levels of the 5L-HNPC converter with less number of components. The Qn-HNPC converter is realized by applying n number of th...
This paper proposes a novel sensor-less switching method based on logic gates for five-level packed U-cell (PUC5) converter. It comprises only two level-shifted triangular carriers and logic gates. Hence, the number of triangular carriers is halved and the switching states table is eliminated, which cause remarkable reduction in complexity of the p...
Static power converters have various applications, such as static ground power units (GPUs) for airplanes. This study proposes a new configuration of a static GPU based on a novel nine-level flying capacitor h-bridge active-neutral-point-clamped (FCHB_ANPC) converter. The main advantages of the proposed converter in comparison with conventional nin...
This article presents a novel structure for a high step-up DC-DC converter. The proposed converter offers several advantages, including a simple structure, high voltage gain, high efficiency, reduced voltage stress on the semiconductors, and fewer components. A two-winding coupled inductor has been employed to enhance the output voltage level in th...
Compact Multilevel Converters (CMLCs) as an emerging class of bidirectional Multilevel Converters (MLCs) offer the best trade-off between components count and power quality. Nonetheless, reducing the conduction passes as well as using minimum semiconductor devices cause reliability issues and impose maintenance costs, as voltage stress degrades the...
Voltage-Level Multiplier Module (VLMM) is an
emerging, cost-effective design concept for Multilevel
Converters (MLC) to increase the resolution of the multilevel
output voltage waveform using minimum components count.
The VLMM expands the operational bandwidth of MLCs by
shrinking or eliminating the ac side filter. This paper uses the
VLMM to desig...
In medium-high power applications, the LCL is the preferred filter topology to attain efficient power conversion. The filter provides a high damping attenuation of -60 dB/decade above the resonance frequency at the cost of a higher order plant, complex parameter design, and, increased vulnerability to un-modeled disturbances. Recently, model predic...
In this paper, a constant switching frequency Finite Control Set Modulated Model Predictive Control (FCS-M2PC) is proposed for a single phase 5-level flying capacitor multilevel converter with an output LC filter operating as an Uninterruptible Power Supply (UPS). In the proposed method, first Finite Control Set Model Predictive Control (FCS-MPC) i...
In this paper, a sensorless constant switching frequency finite control set modulated model predictive controller (FCS-M2PC) is proposed for a single phase 5L flying capacitor multilevel converter (FCMC). The converter is designed to operate in voltage-control mode for a UPS application with an output LC filter. Current-sensorless operation is achi...
In this work, a high step-up non-isolated DC-DC converter with a coupled inductor is introduced for renewable applications. The output voltage rate of the proposed structure is efficiently excesses by choosing an appropriate turn’s ratio of the coupled inductor. The voltage lift elements are utilized to further increase the voltage gain and also le...
Medium voltage DC(MVDC) system is considered as a promising technology to improve the efficiency and power density of electric aircraft propulsion(EAP) drives. To adapt to the MVDC voltage level and achieve high drive performance, a five-level active neutral point clamped(5L-ANPC) inverter consisting of three-level ANPC and flying capacitor circuit...
Flying capacitor multilevel (FCML) inverter is an attractive power converter topology which provides high-quality staircase output voltage waveforms by cascading flying capacitor cells. However, the large number of semiconductor devices utilized in the FCML inverters degrades the hardware reliability, which may constrain such converters from being...
In this paper, a new configuration of single DC source hybrid packed U-cell (H-PUC) converter with reduced number of components is proposed. The proposed H-PUC only requires one dc source, twelve power switches, and three capacitors to provide 23-level output voltage. It is comprised of two high voltage low frequency (LF) and low voltage high frequ...
The integration of renewable energies as dc power sources is increasing in dc micro-grid that is gaining more importance than ac micro-grid because it requires fewer conversion stages. Also electrification through electric vehicles (EV) is encouraged due to their reduced fuel usage and greenhouse emission. In this paper, the integration of solar en...
In this paper a single-phase transformer-less hybrid series active filter (THSeAF) based on duo-neutral-point-clamped (D-NPC) converter to address distribution level power quality is proposed to investigate experimentally the efficiency of the hardware-in-the-loop (HIL) implementation for power electronics applications. This benchmark contributes t...
Multilevel voltage-source converters are well-suited for power conversion applications demanding higher power density, reliability, efficiency, and power quality. An unremitting and persistent research for developing advanced multilevel converter topologies with improved characteristics, performance, modulation techniques, and control methods conti...
This paper proposes a novel 11-level improved active-neutral-point-clamped (11L-IANPC) converter for ground power unit (GPU) application. This hybrid topology consists of the 5L-ANPC and the proposed low-voltage sub-module. The proposed 11L-IANPC converter possesses only one flying capacitor (FC) and reduced numbers of high-frequency switches. Henc...
This paper proposes an improved control method based on modified Delta-Sigma Modulator (DSM) to enhance transient response and improve harmonic contents of buck DC-DC converter. The main advantages of the proposed method are improving the output voltage frequency spectrum, correction of the output voltage harmonic contents and sideband harmonics, r...
This paper proposes a new configuration for static ground power unit (GPU) based on the novel 25-level hybrid active neutral-point-clamped (HANPC) converter. The superiority of the proposed converter, as compared with conventional and other suggested multilevel converters, is significant decreasing the number of switches and minimizing the number o...
Two new configurations of static ground power unit based on 5L active neutral point clamped (ANPC) and novel modular 9L-ANPC converter are proposed. First, a new level shifted phase-shifted carrier pulse-width modulation (LS-PSC-PWM) switching method for the 5L-ANPC converter is defined. By utilizing the proposed method, total harmonic distortion o...
In this paper, a wavelet-based low-pass filter (WBLPF) is proposed to improve the direct current (DC) component separation speed. To this end, three different methods are studied to implement discrete wavelet transform, and then they are compared with each other in term of transient response time, accuracy and computational cost. Afterwards, the co...
In this paper, by considering voltage distortion and frequency variation, the control strategy of synchronous reference frame (SRF) for three-phase shunt active power filter has been improved. In the SRF compensation method a conventional low pass filter (CLPF) is used to extract the dc component of the d-axis current (Id). Unfortunately in the pre...
Because of significant capabilities of Space vector pulse width modulation (SVPWM) implementation in discrete systems, this method has been widely applied in Z-source inverters. ZSVM is one of the switching methods for Z-source inverters. Couple of disadvantages of this method can be mentioned as 1) Fluctuation of inductor current causes earsplitti...
Multilevel voltage source power converters are the state-of-the-art and key elements for medium-voltage (MV) high-power applications. The cascaded multicell (CM) topologies reach higher output voltage and power levels, and also retain higher reliability due to their modular and fault-tolerant features. This paper initially proposes an optimized top...
In this study, a novel developed structure of a converter based on double flying capacitor multi-cell named progressive double flying capacitor multicell (PDFCM) is proposed. The main advantage of this proposed structure compared with DFCM converter is generation of more output voltage levels while having the same number of devices. This novel conv...
Modular multilevel converters (MMCs) are one of the next-generation multilevel converters intended for medium/high-voltage high-power market. This paper initially studies a modified topology for flying-capacitor multicell converters (FCMCs) as a modular submultilevel module. The main advantage of the modified FCMC, in comparison with the convention...
Multilevel converters have been widely used in medium-voltage high-power applications. One of the typical breeds of multicell converters is stacked multicell converter (SMC). This paper presents an improved configuration for SMCs, accompanied by its analysis, modeling, and implementation. The main advantages of the proposed converter, in comparison...
Voltage source multicell multilevel converters (VSMMCs) have been extensively exploited in medium-voltage highpower fed industrial applications. One of the typical breeds of the VSMMCs is flying-capacitor multicell converter (FCMC). This study presents an improved configuration for FCMCs, accompanied by its analysis, modelling and implementation. T...
Model reference adaptive system (MRAS) based robust stator resistance estimator for sensorless induction motor (IM) drive is proposed. The MRAS is formed with a semi-active power quantity. The proposed identification method can be achieved with on-line tuning of the stator resistance with robustness against rotor resistance variations. Stable and e...
This paper proposes an improved configuration of double flying capacitor multicell (DFCM) converter. The main advantages of the proposed converter, compared to the conventional DFCM converter, are the doubling of the number of output voltage levels and improvement of the output voltage frequency spectrum. This progress is achieved by adding only tw...
This paper provides a mathematical model for voltage natural balancing process in single-leg flying capacitor multicell converters by taking into account the balance booster circuit effect. The analysis leads to state-space model of the converter. This analytic model of the flying capacitor multicell converters can be utilized to investigate the st...
This paper provides a mathematical model for voltage natural balancing process in multi-phase capacitor-clamped multicell converters. The analysis leads to state-space model of the multi-phase flying capacitor multicell converters. This analytic model can be utilized to investigate the start-up and steady states of clamping capacitor voltages. To p...
Grid interaction of DG units with a novel hybrid flying capacitor multicell converter which is suitable for hybrid systems, is presented in this paper. Multicell inverters have important advantages which make them a flexible solution for medium voltage/high power applications such as: lower rating of switches and lower output voltage THD. Proposed...
Multicell multilevel converters are very interesting alternatives for high power applications. A modified mixed cascade flying capacitor multicell inverter is proposed in this paper which leads to reduction in the number of switches. The proposed configuration is used for compensation of voltage sag/swell and voltage unbalance. Simulation results b...