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Packed U-Cell (PUC) converter has been introduced as a 7-level converter in early 2008. Since then, different analysis and projects have been performed on, including various applications such as inverter and rectifier, linear and nonlinear voltage controllers. In this paper, authors try to do a detail review on this topology covering all aspects like topology design in single and three-phase, operation...
Phase-Looked loop (PLL) is nowadays the best suited technique to achieve grid synchronization. The Moving Average Filter (MAF) based PLLs have received in recent three years considerable attention owing to their attractive features. Indeed, they are able to completely eliminate the unwanted effect of harmonics, dc offset, and unbalanced voltages. Unfortunately, these advantages are paid in term of...
This paper presents a 7-level cascaded H-bridge (CHB) multilevel inverter using a single DC source. The second DC bus is a capacitor that its voltage is controlled by switching sequences. The capacitor voltage is regulated at half of the DC source amplitude to have seven voltage levels at the output. Seven voltage levels include each DC bus voltage, their sum and subtraction. Switching pattern is...
This study deals the design, simulation and implementation of an isolated Zeta converter based novel cost-effective, dual-colored, step-dimming with power quality improvement at universal AC mains while operating the power factor correction (PFC) converter in Discontinuous Conduction Mode (DCM). The PFC Zeta converter is able to provide regulated output current to a string of LED load of 23 W and...
A power factor correction (PFC) based Landsman converter in bridgeless (BL) configuration feeding a brushless DC motor (BLDCM) drive is proposed for low power household appliances. The speed of BLDCM is controlled by varying the DC bus voltage of the voltage source inverter (VSI) feeding to a BLDCM. Switching losses of six solid-state switches of VSI are reduced by the use of low frequency switching...
This paper deals with the mitigation of the parallel resonance of PFC (Power Factor Correction) capacitor with the supply impedance in the distribution system. The proposed system consists of three phase step-down transformer, three phase thyristor converter used to feed load commutated inverter (LCI) of a synchronous motor (SM) drive and a capacitor at point of common coupling (PCC) for PFC used...
This paper presents a single-phase single-switch bridgeless power factor corrector (PFC) boost Vienna rectifier as an onboard electric vehicle (EV) battery charger. The presented topology generates 3-level voltage waveform at the input which eliminates harmonic contents significantly while using small filters. The reduced number of parts used in this topology makes it appealing for EV industries to...
This article is subject to the improvements made over an emergency DC injection braking system for AC motors. The modifications put in place a bi-directional braking circuit capable of flowing the power into the traction system in one direction or recharging the battery in the other. We applied the proposed topology over a specific need: automotive application like HEV, EV and electric motorcycle...
In this work, a Shunt Active Power Filter (SAPF) using a multilevel inverter operating in low switching frequency is used to improve the power quality in electric metro power supply systems. The proposed topology is a three level/phase voltage source Neutral Point Clamped (NPC) and the Conservative Power Theory (CPT) is used to extract the harmonic currents. A current control schema sensing only the...
This paper presents a new maximum power point tracking (MPPT) method for photovoltaic (PV) systems. The proposed method improves the working of the conventional perturb and observe (P&O) method in changing environmental conditions by using the fractional short-circuit current (FSCC) method. It takes the initial operating point of a PV system by using the short-circuit current method and later...
This paper investigates on power quality improvement of Smart residential buildings with Electric vehicle charging station. A multilevel Transformerless Hybrid Series Active Filter (THSeAF) is proposed to address power quality issues related to both current and voltage. The proposed configuration assists integration of renewable energy sources to ensure a sustainable supply. The controller is based...
This paper proposes a neural network controller for a DC/DC converter used to manage the power flow of an active hybrid energy source for Electric Vehicles. The energy source is composed of a battery, an ultracapacitor and a Dual Active Bridge DC/DC converter used to optimize the power distribution between the energy sources involved. The neural network control method applied to this bidirectional...
This paper presents a new cell module for modular multilevel converter (MMC) used in electric vehicles application. Traditionally, MMC has been used in high-power high-voltage application. The large number of power electronic devices required is rather used for reducing their voltage stress than the harmonic contents. Using the proposed cell topology, higher numbers of levels are achieved while the...
This paper presents a single-stage, three-phase four-wire grid tied SPV (Solar Photovoltaic) energy conversion system with a decoupled adaptive neural network based control approach for power quality improvement at AC mains. The proposed solar PV energy conversion system, along with feeding fundamental active power to the grid, is capable of compensating linear and nonlinear loads with MPPT (Maximum...
This paper presents a technique on how two simulators at different levels of abstraction can interact for the design and sizing of a booster power unit. The system is constituted by an ultracapacitor bank and a converter to boost voltage sags in a railway application. Full steps to determine Thevenin equivalent circuit of a dc railway is obtained based on exact modeling of the system components. Example...
This paper presents some popular multilevel converter topologies and associated modulation techniques considering advantages for electric transportation (ET) applications including electric vehicles (EVs), charging stations, wireless charging, etc. Cascaded H-Bridge (CHB), Flying Capacitors (FC) and Neutral Point Clamped (NPC) are analyzed. Moreover, mostly used switching techniques in multilevel...
A control algorithm for a standalone solar photovoltaic (PV)-diesel-battery hybrid system is implemented in this paper. The proposed system deals with the intermittent nature of the energy generated by the PV array and it also provides power quality improvement. The PV array is integrated with a DC-DC boost converter and controlled through a maximum power point tracking (MPPT) algorithm to obtain...
This paper presents a bridgeless-single ended primary inductance converter (BL-SEPIC) fed brushless DC (BLDC) motor drive for low power household applications. The speed of the BLDC motor is controlled by adjusting the DC link voltage of the VSI feeding a BLDC motor. The VSI feeding BLDC motor is used for achieving an electronic commutation of the BLDC motor and operates in a low frequency switching...
This paper presents a two stage, three-phase grid interfaced SPV (Solar Photovoltaic) energy conversion system with an ANF (Adaptive Notch Filter) based control algorithm. The proposed SPV system is a multi-function grid-interfaced solar PV energy conversion system, which along with conversion of dc-power from SPV to AC mains, is capable of reactive power compensation, harmonics current elimination...
A multilevel boost PFC (Power Factor Correction) rectifier is presented in this paper controlled by cascaded controller and multicarrier pulse width modulation technique. The presented topology has less active semiconductor switches compared to similar ones reducing switching losses as well as the number of required gate drives that would shrink manufactured box significantly. A simple controller...
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