With regard to incompatible and low efficiency of lithium-ion batteries, nickel metal hydride batteries and nickel-chrome charger, a generalized smart charger is designed in this paper, which adopts single chip control circuit to make battery charge intelligentize, using on-chip integrated 10-bit A/D converter and 8-bit pulse width modulation (PWM) output, to ensure that the charger with a high...

HVDC Light is the most recent HVDC technology based on Voltage Source Converters (VSC) and extruded DC cables with power units up to 200 MW. HVDC Light converters include Insulated Gate Bipolar Transistors (IGBT’s) and operate with high frequency Pulse Width Modulation (PWM) in order to get high speed control of both active and reactive power. HVDC Light cable is a cable with insulation of extr...

In this paper, synchronous multi-channel pulse width modulation (PWM) generator for driving servo motors of humanoid robot was proposed. an application, the requires smooth and beautiful movement, therefore PWM signal each motor must be synchronized. Since microcontroller (slave) has no enough channels to generate PWMs 32 motors, field programmable gate array (FPGA) used as slave robot. The FPG...

The total number of switching pulses permitted in one-quarter the fundamental-cycle an inverter is restricted due to restrictions losses high-power devices. elimination major low-order dominating harmonics using SHEPWM (Selective Harmonic Elimination) suggested this research paper. positive or negative voltage transition at instant where fundamental has greatest slope distinguishes various type...

A three-phase isolated rectifier features bidirectional power conversion and galvanic isolation, is attractive as a high-efficiency energy system. However, when conventional modulation applied to this rectifier, the excessive DC-link current ripple will result in increasing switching losses or size of inductance, which not cost-effective. In order effectively reduce ripple, paper proposes “six ...

1 Properties of the ideal rectifier.techniques programming interview exposed pdf as: multipulse rectifiers, active filters and PWM rectifiers Fig. Similar to the PWM active filter, the PWM rectifier has a complex control structure, the.PWM Rectifier with Active Filtering. Institute of Control and Industrial Electronics.source PWM rectifiers in programming logic controllers pdf different process...

In this work, a new direct power synergetic-sliding mode (DPSSM) technique based pulse width modulation (PWM) strategy for doubly-fed induction generator (DFIG) integrated to variable speed dual-rotor wind (DRWP) systems is designed. The designed strategies produce voltage locations identical those of classical two-level inverter. novel control (SSM) command and PWM replace the hysteresis compa...

In recent years, light-emitting diode (LED) technology emerged as a prime candidate for the future illumination light source, due to high energy efficiency and long life time. In addition, LEDs offer a superior flexibility in terms of colors and shapes, which leads to a potentially infinite variety of available light patterns. In order to create these patterns via easy user interaction, we need...

Dalam pengujian ini, fungsi dari electric ducted fan diinvestigasi dengan metode eksperimental. Sebuah diameter rotor 80 mm digunakan untuk pembelajaran. Eksperimen menggunakan alat uji gaya dorong statik. Hasil statik menunjukkan bahwa maksimum didapatkan di sekitar 30 N. Selain nilai dorong, parameter data lain yang yaitu arus, tegangan, daya, kecepatan putar baling-baling, udara, torsi, suhu...

Multilevel converters offer high power capability, associated with lower output harmonics and lower commutation losses. Their main disadvantage is their complexity, requiring a great number of power devices and passive components, and a rather complex control circuitry. This paper proposes a single-phase sevenlevel inverter for grid connected PV systems, with a novel pulse widthmodulated (PWM) ...