This paper presents an enhanced space vector modulation (SVM) method to drive matrix converters (MCs) with zero common-mode voltage by using the rotating vectors, which are not used in traditional SVM for MCs. The reference output is generated a combination of closer vectors order minimize distortion. Explicit equations develop switching patterns so that proposed can achieve full control and input current phase angle good performance input/output waveforms. Together theoretical analysis,...

This paper presents a novel space vector modulation (SVM) method combined with modified four-step commutation to achieve perfect zero common-mode voltage (CMV) for matrix converters (MCs). The new SVM was developed by using only rotating input vectors, which results in the CMV MCs being zero. However, it causes some noise practical applications that drive traditional commutation. In order solve this problem, is also proposed perfectly eliminate without any noise. commutation, delay time...

Extensive studies regarding complete coverage problems have been conducted, but a few tackle scenarios where the mobile robot is equipped with reconfigurable modules. The reconfigurability of these robots creates opportunities to develop new navigation strategies higher dexterity; however, it also simultaneously adds in constraints direction movements. This paper aims valid strategy that allows tetromino-based self-reconfigurable perform tasks. To this end, novel graph theory-based model...

For the direct matrix converter (DMC) applied to permanent-magnet synchronous motor (PMSM) drives, a novel modulation scheme is proposed in this article, which could reduce control complexity and improve efficiency while achieving zero common-mode voltage (CMV). Only three counterclockwise or clockwise rotating vectors are adopted operate DMC. The has inherent ability generate sinusoidal input currents without explicit modulation. duty cycle expressions for quite simple any trigonometric...

The efficiency of energy usage applied to robots that implement autonomous duties such as floor cleaning depends crucially on the adopted path planning strategies. Energy-aware for complete coverage (CCPP) in reconfigurable raises interesting research, since ability change robot’s shape needs dynamic estimate model. In this paper, a CCPP predefined workspace by new platform (hTetro) which can self-reconfigure among seven tetromino cooperation hinge-based four blocks with independent...

This paper proposes a direct space-vector modulation (DSVM) method that can reduce the common-mode voltage (CMV) as well switching losses for matrix converters in high transfer ratio. Even though previous DSVM improvements CMV peak value to 42%, compared conventional method, they incur losses. The proposed this provides same methods with lower are theoretically analyzed through accumulated switched period and those of methods. Simulation experimental results given verify input/output...

This paper presents a new fuzzy-logic approach to control variable-speed wind turbine and Doubly Fed Induction Generator (DFIG). focuses on the implementation of fuzzy controller for active power reactive in slow speed. A vector scheme is developed rotor side voltage source converter. strategy allows independent generated as well In this work, proposed DFIG. The describes complete mathematical DFIG model. model, angular speed controlled by pitch angle; are voltage, which goes through...

In this study, a novel compound is synthesized by adding the red-emitting Y2O3:Eu3+ dopant to conformal phosphor package (CPP) or in-cup (IPP), be employed as component in multi-chip white LEDs lamps (W-LEDs). It was found that solution can enhance color rendering index (CRI) of W-LEDs have correlated temperatures 5600 K through 8500 more than 86. Besides, impacts on attenuation light layers, CPP and IPP, are also demonstrated based Beer–Lambert law Mie theory. These results provide...

In this paper, a new power control strategy based on model predictive for the grid-tie three-level neutral point clamped inverter is presented. A dynamical orientation of grid voltage used to predict performance variables required system. cost function that includes tracking ability, neutral-point balancing and switching frequency reduction achieve optimal state. proposed selection scheme input introduced comprehend stability closed-loop system reduce computational cost. At each sampling...

This paper presents the development of an effective space vector modulation (SVM) regarding matrix converters (MCs) for full range voltage transfer ratio (VTR), whereby a superior output performance was achieved. The proposed method uses all vectors adjacent to reference output-voltage in one sector build unique general switching pattern drive MC. For purpose pursuing high MCs, can be applied low and VTRs with strategy owing generalized equations. In addition, current-ripple-minimization...

This paper introduces a new three-phase two-level inverter based on the switched-capacitor voltage multiplier. By adding multiplier network at DC side of traditional topology, DC-link introduced is stepped up to triple input voltage. Compared existing solutions, common-mode topology kept constant. Moreover, stress across additional semiconductor components same as one-third Operating principles, mathematical analysis, circuit and pulse-width modulation (PWM) method Boolean logic function for...

With the development of high-efficiency and high-power Light-Emitting Diodes (LEDs), it has become possible to use LEDs in lighting illumination.In last decades, developing a new method for improving lumen output Angular Color Uniformity (ACU) is main direction LED technology.In this paper, an innovative approach enhancing performance (lumen angular color uniformity) Multi-Chip White lamps (MCW-LEDs) was proposed demonstrated by mixing green Ce 0.67 Tb 0.33 MgAl 11 O 19 : Ce,Tb (CeTb)...

In practice, the input filter is an important component in matrix converter (MC) systems for removing high harmonic components from currents. Due to filter, power factor (IPF) at main supply does not always achieve unity. To investigate behavior of IPF, this paper analyzes IPF compensation capacity MCs with LC based on space vector theory and conservation energy law. The study shows that range voltage transfer ratio (VTR) unity depends strongly quality factor, which determined by system...

By adding red-emitting α-SrO·3B2O3:Sm2+ phosphor and SiO2 co-doping particles to yellow-emitting YAG:Ce compound, a novel method for improving lighting performance of white LEDs with remote structure, which have an average correlated color temperature (CCT) 5600–8500 K, is proposed demonstrated. varying concentration from 2 30% maintaining 5% SiO2, the obtained results indicated that rendering index (CRI), quality scale (CQS), luminous flux can be increased significantly. Moreover,...

The space vector modulation (SVM) method using only rotating vectors is very effective to suppress the common-mode voltage (CMV) for matrix converters (MCs). However, effect of input filter on power factor (IPF) has not been fully investigated when this method. This study displacement angle and proposes an IPF compensation strategy zero CMV-SVM in MCs. proposed analyzes duty cycles under IPF-compensation condition. Through analysis, adjusts by a set three counterclockwise-rotating or...

This paper focuses on the common-mode voltage (CMV) reduction in direct matrix converter (MC) using space vector modulation (DSVM) (SVM) method. Even though a previous DSVM method can reduce CMV peak value to 42% compared traditional DSVM, it has some drawbacks such as high switching loss, RMS of CMV, etc. proposes new that mitigate with better performance, lower leakage current and reduced losses. The proposed is easy carry out via software without any additional hardware. Simulation...

A space vector modulation (SVM) method to eliminate common-mode voltage (CMV) for matrix converters (MCs) can effectively solve many problems in electrical systems. However, the input power factor (IPF) of MC is significantly degraded under light-load conditions due filter's characteristics. In this paper, a new switching strategy proposed compensate IPF zero CMV-SVM MCs. The based on study rotating-vector behavior and rearrangement duty cycles order achieve CMV, unity or maximum achievable...

Common-mode voltage (CMV) is responsible for overvoltage stress to the winding insulation and bearing damage of an AC motor. High dv/dt CMV causes leakage currents, which create noise problems equipments installed near converter. This paper proposes modulation strategy three-level T-type NPC that substantially eliminates CMV. The principles selecting suitable triangle carrier signals described. proposed method can mitigate peak value 50% as compared conventional sinusoidal pulse width...

Model predictive control (MPC) is emerging as an attractive method to AC/DC matrix converter (MC). However, the high computational burden and variable switching frequency in conventional MPC (C-MPC) obstacle for its real application. In order overcome these problems, this paper presents a simplified model (S-MPC) with fixed frequency. The S-MPC eliminates all source current predictions C-MPC by using required input vector (RICV). Then, achieve frequency, combination of three vectors selected...

Abstract Based on some advantageous properties, such as fast response time, environment friendliness, small size, long lifetime, and high efficiency, white LEDs are increasingly used in common illumination applications. In this research, by co-doping of redemitting Sr 2 Si 5 N 8 :Eu 2+ phosphor adding SiO particles to yellow-emitting YAG:Ce compounds, a new approach for improving color uniformity rending index remote-phosphor structure is proposed demonstrated. The obtained results clearly...