In this study, a new adaptive controller is proposed for position control of pneumatic systems. Difficulties associated with the mathematical model of the system in addition to the instability caused by Pulse Width Modulation (PWM) in the learning-based controllers using gradient descent, motivate the development of a new approach for PWM pneumatics. In this study, two modified Feedback Error L...

In this paper, a method for minimization of Total Harmonic Distortion (THD) is proposed in case of PWM inverter. Inverters are widely used in many applications such as in the UPS and ac motor drives resulting in harmonics production. A phase compensation Resonant Controller (RSC) is proposed for 1-phase pulse width modulation (PWM) inverter using MATLAB simulation. The simulation results are th...

A novel switched-capacitor-based cascaded multilevel inverter is proposed in this paper, which is constructed by a switched-capacitor frontend and H-Bridge backend. Through the conversion of series and parallel connections, the switched capacitor frontend increases the number of voltage levels. The output harmonics and the component counter can be significantly reduced by the increasing number ...

This paper focuses on hybrid H-bridge cascaded MLI using two equal dc sources in order to produce a five-level output. The proposed topology reduces the number of dc sources and switching elements. This paper emphasis on various inverted sine carrier PWM (ISCPWM) techniques with equal amplitude and unequal amplitude carriers. The inverted sine carrier pulse width modulation (ISCPWM) technique e...

In this paper presents a literature survey on improvement of power factor and reduction of harmonics in three phase induction motor by Pulse Width Modulation (PWM) techniques. Also presents the current status of the improvement of power factor and reduction of harmonics in three phase induction motor by PWM techniques. Authors strongly believe that this survey article will be very much useful t...

A CMOS class D phase locked loop based PWM generator is presented in this paper. The implementation is done in a 90nm CMOS process using CADENCE tool. The architecture in this project eliminates the requirements for a high-quality carrier generator and a high-speed voltage comparator that are often required in PWM implementations. Voltage comparison is replaced by Phase comparison and precise r...

This paper reports an investigation of pulse width modulation (PWM) techniques fo r two-phase brushless DC (BLDC) motors fed by a two-phase eight-switch inverter in a fan a pplication. The three-phase BLDC motor is widely applied in industry; however, a lower-cost t wo-phase BLDC motor and drive circuit has been greatly in demand in recent years. In this p aper, we introduce a mathematical mode...

A technique for selecting the element values of the PWM AC chopper circuits to improve the input power factor is presented. This technique analyzes the phase angles of input current, output current and voltage for selecting the optimal value of the filter capacitance. This produces the phase angle of input current in phase with that of input voltage. Therefore, the PWM AC chopper can operate at...

This paper discusses the design and implementation of single phase PWM inverter using 8051 microcontroller. The main features of 8051 based PWM inverter are simpler design, low cost, maximum range of voltage control and compact in size. The designed PWM inverter is tested on various AC loads like AC motor and intensity control of incandescent lamp in a closed loop environment.