This paper presents a comparative study of three predictive current control schemes for permanent-magnet synchronous machine (PMSM) drives. The first scheme predicts the future evolution currents each possible configuration inverter legs. Then, switching state which minimizes given cost function is selected and applied during next sampling time. second uses modulator to apply two configurations legs computation period. Among these configurations, one leads null voltages. duration other...

This paper presents the implementation of a hybrid-control strategy applied to permanent-magnet synchronous-motor (PMSM) drive. Hybrid control is general approach for switching-based hybrid system (HS). class HS includes continuous process controlled by discrete controller with finite number states. In case ac motor drives, in contrast conventional vector like proportional-integral or predictive control, where inverter not taken into account controller, integrates model and considers state...

Energy storage elements such as supercapacitors are widely used in high-power applications. However, due to single cell voltage limitation, an energy system with a large number of is often employed. management systems associated order assure user and equipment safety. Balancing circuits, which enable the equalization each element series, part device. The work presented this paper aims enhance lifetime systems. It relies on better controlling balancing circuits terminals elements. With...

This paper presents a control scheme suitable for systems composed of continuous process modulated in energy by power converter with finite number topologies. To track the reference values, topology is determined from criterion based on state variable model and taking into account possible topologies converter. The proposed hybrid applied to an electrical motor drive inverter coupled permanent magnet synchronous machine. An evolution which insures fixed modulation frequency also proposed....

This paper focuses on the observer-based methods for induction machine sensorless drive. It is well known that use of speed observer limited at a very low stator frequency due to unobservability. Some existing propose avoid zero-stator-frequency working points. These are nonetheless high-torque operations. The first contribution this analyze finely observability, which leads definition an observability index. correlation between index and performance analyzed illustrated. second control...

Mobile applications necessitate nowadays huge digital resources. Power management of a systems-on-chip is based on dynamic voltage scaling. DC/DC converters used to supply the system-on-a-chips are facing stringent constraints with respect load transients, line and reference tracking. Hysteretic control known as most convenient scheme fair tradeoff between transient performances, analog implementation power consumption. Fixed-switching frequency hysteretic has been experimented well full...

In this paper, we present a transverse electric (TE)-polarized Bessel-beam antenna in the microwave range based on leaky radial waveguide. According to dispersion equation, an inductive sheet over ground plane is needed. To achieve sheet, grid structure printed dielectric substrate designed. Besides, waveguide coaxially fed with quasi-loop shaped excite TE mode. The proposed investigated by simulation and measurement. measurement, small loop used probe near magnetic field, accurate measured...

Nowadays, active-front-end rectifiers are increasingly used as grid connected devices. Their efficiency and performances have become relevant for reducing the overall losses. This paper thus introduces a predictive hybrid pulse-widthmodulation (PH-PWM) technique, adaptable to any space-vector PWM (SVPWM) controller. As opposed techniques based on sector partitioning, PH-PWM technique selects appropriate sequence online with help of algorithm. selection is cost-function where users can define...

This paper presents a fully synthesizable digital controller for high-frequency low-power DC-DC switching mode power supply (SMPS). Key module of the is Hybrid pulse-width modulator (DPWM), which takes advantage Digital Clock Manager (DCM) phase-shift characteristics available in FPGA resource and combines counter-comparator with multi-bit Delta-Sigma (Delta-Sigma) Multi-stAge-noise-SHaping (MASH) modulator. A includes proposed DPWM PID algorithm experimentally verified using an on discrete...

Power management of mobile digital systems-on-chip necessitates large voltage regulation performances. DC/DC converters used to supply cores are facing stringent constraints with respect load transients, reference tracking and accuracy. The fast transient response offered by sliding-mode control is well suited varying load. Fixed switching-frequency also mandatory for EMI noise related issues. Fixed-switching frequency has been experimented as a multi-loop system. There necessity investigate...

The development of systems-on-chip requires embedded power management solutions due to the large number domains. switched-capacitor voltage regulator is a suitable candidate as capacitors may be integrated whereas inductors still suffer limitations in that respect. Literature covers proposals optimized stages and several dedicated controllers for DC-DC converters. Unfortunately results do not cover systematic stability analyses. paper proposes an original approach analysis using sampled-data...

Modular multilevel converter (MMC) is an attractive topology in industrial applications such as high-voltage direct current (HVdc) transmission system where fast power control required. The most conventional method for MMC uses cascaded structures, the and internal energy dynamic (outer loops) limited by "frequency separation" constraints since choice of currents (inner must consider tradeoff between rapidity robustness. In this article, we present a new based on differential flatness...

This article considers a robust output set-point tracking problem for an <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$m$</tex-math> </inline-formula> -terminal power flow controller (PFC) meshed dc micro-grids. The PFC is electronics device used to control the at node in grid and may act as circuit breaker. system modeled by state-space bilinear dynamics coupled with polynomial output. In proposed...

In order to actively control the power flow in a Dual Active Bridge (DAB) converter, different modulation strategies such as Single Phase Shift (SPS), Triangular Modulation (TRM), Extended (ESPS) have been proposed. Each is more suitable for given range of load level and has difficulties working with wide level. As these are complementary their combination can improve DAB converter yield, this paper, Finite Control Set Model Predictive used choose best strategy at moment efficiency real...

In this paper, we present a novel control strategy for motor drivers, which have called 'hybrid direct-torque control'. Based on models of both and inverters, the hybrid uses formal representation inverter-machine behavior to determine optimal switching state vector application time. contrast conventional control, is based presence hysteresis controllers table, involves tracking reference values electrical in space. Observers estimators torque flux are unnecessary. This scheme applied...

This paper presents a novel digital controller for the high-switching-frequency buck converter based on principle of predictive control. Compared with traditional current-mode controller, prediction inductor current and output voltage are performed at same time by adding control variable to DPWM signal that can dynamically adjust jump. It accelerates convergence rate during transient states, while inherently preserving rejection power reference perturbations. The analysis controller's...

Listening music with a headset is now classical feature of mobile phones. A linear amplifier still employed to drive the as audio quality must challenge dedicated players somewhat 100 dB signal-to-noise ratio. This also have lowest impact on platform autonomy, size, and cost. symmetrical power supply required by such amplifiers due standard jack connector headsets. Using an inductive switch mode (SMPS) most energy efficient solution from battery. Classically, two dc/dc converters are...

This paper presents a control scheme for multilevel multi-cell converter. For this type of converters, load current and capacitor voltages must be jointly controlled. Moreover the real-time constraint is important. leads us to propose based on simplified state-space model. The model allows predicting state vector evolution every converter configuration. algorithm directly determines switching which minimizes simple cost function. A normalization variables proposed function calculation in...

Many research efforts have been dedicated to matrix converters for several years. As major technological issues are now solved, this structure will widespread in industrial applications, particular with AC motors. Current control is a key issue motor drives, so many schemes proposed. Some of them proposed at first inverters, were applied converters. Among algorithms used predictive shows very good performances. In paper new scheme converter- fed permanent magnet synchronous machine....