The evaluation of response time of a constant temperature thermoresistive sensor based feedback circuit, excited by a pulsewidth modulated (PWM) waveform is done by a way of simulation studies in PSPICE environment and compared with that of a circuit excited by an analog voltage (continuous time domain). For a thermoresistive sensor with an intrinsic time constant much larger than the period of...

Discovery of motifs in biological sequences and various types of subsequences in commercial databases have varied applications and interpretations. This paper proposes a new approach to solve the Combinatorial Pattern Matching (CPM), search for continuous and gapped rigid subsequences and discover Longest Common Rigid Subsequences (LCRS) from the given sequences using DNA operations and modifie...

Low voltage high-efficiency DC-DC conversion circuits are integral components of battery operated portable systems. This paper presents the design of a pulse width modulated (PWM) controller for a milliwatt level DC-DC converter. Low power control circuitry is constructed by utilizing a delay line based PWM generator and low-resolution feedback. A IDC-DC converter has been fabricated which deli...

Motion control plays a vital role in industrial atomization. Different types of motors AC, DC, SERVO or stepper are used depending upon the application; of these DC motors are widely used because of easier controlling. Among the different control methods for DC motor armature voltage control method using pulse width modulation (PWM) is best one. We can realize the PWM using H-bridge built with ...

Pulse Width Modulation (PWM) signals have wide applications in different field as communication and control systems. This paper introduces a design of a Micro Blaze soft core processor system that can be accommodated to act as PWM system. The designed processor system is programmed in C language to act as PWM system. The obtained results are traced on chip scope integrated logic analyzer and on...

The self-aligned hybrid carrier-based pulse-width modulation (PWM) for modular multilevel converters (MMC) based on decentralized control is proposed in this paper. It parallel cells a submodule (SM) using PWM, which combines the concept of level-shifted PWM (LSC-PWM) and phase-shifted (PSC-PWM) methods. By implementing system digitally, carriers align themselves. Each SM interacts with other S...

The integration of solar photovoltaic (PV) arrays with induction motor drives (IMDs) has attained significant research interest, owing to the wide range applications IMD, such as water pumping, cement industries, electric vehicles, and rolling mills. Multilevel inverters (MLIs) are a prominent solution for driving medium voltage motors (IMs) due their superior performances over two-level source...

A new mathematical method for time-domain analysis of power converters with periodic switching cuircuits is proposed .The method is based on mixed using of the Laúlace and modified ZTransform in linear periodically time-varying system. The model was used for the analysis of three-phase voltage source inverters with Space Vector PWM feeding a three-phase static load,but it is applicable for all ...

There is always a need to create efficient and optimized converters deliver the best possible results achieve better THD profile in waveform output. One way by controlling switching of power switches using appropriate modulation schemes. While numerous works have been done proposing new strategies for multilevel inverters, this work will compare multicarrier PWM near-to-level control (NLC) In p...