 When utilized at low amplitude modulation indices, existing multilevel carrier-based PWM strategies have no special provisions for this operating region, and several levels of the inverter go unused. This paper proposes some novel multilevel PWM strategies to take advantage of the multiple levels in both a diode-clamped inverter and a cascaded Hbridges inverter by utilizing all of the levels ...

In this paper, the influence on the load capacitance value of the adiabatic dynamic CMOS logic (ADCL) is examined. The adiabatic operation and reduction effect of power consumption are confirmed using LTspice with 0.18μm standard MOS model. Furthermore, the 3-bit digital PWM using ADCL without voltage holding capacitance (CS) was simulated for the organic light emitting diodes (OLEDs) dimming s...

This paper proposes the simplification of the synthesis method of PWM pattern by using the Walsh function. The digital nature of the Walsh function makes the relation between the Walsh spectrum and PWM pattern to be a linear algebraic equation. Thus the synthesis becomes straightforward. It is the remarkable feature of the proposed method over a conventional method using Fourier series expansio...

This in vitro study was conducted to evaluate lymphocyte blastogenic and cytokine production by bovine peripheral blood mononuclear cells (PBMCs) stimulated with phytohemagglutinin (PHA), pokeweed mitogen (PWM) and concanavalin A (Con A) mitogens, by using tetrazolium salt and ELISA tests, respectively. The results presented that  Interleukin-2 (IL-2), IL-4, IL-5, IL-10, IL-17 and IFN-...

This application note describes setting the Enhanced Flex Pulse Width Modulator (eFlexPWM or mcPWM) for BLDC motor control applications. It includes a brief description of the eFlexPWM, the eFlexPWM peripheral’s initialization, commutation techniques, and the PWM duty cycle control. The description in this application note will cover the advanced eFlexPWM modules built on the MCF56F825x/4x and ...

Abstract– In this paper, a detailed analysis of the zerovoltage and zero-current-switching (ZVZCS) full-bridge PWM converters is performed. The differences of the zero-voltage-switching (ZVS) operation between the conventional ZVS full-bridge PWM converters and the ZVZCS full-bridge PWM converters are analyzed in depth. Circuit parameters that affect the soft-switching conditions are examined a...

Abstract – This paper comprehensively analyses the design of Space Vector PWM (SVPWM) using Simulink and presents the comparative analysis of improved quality three phase PWM-VSI for Adjustable Speed Drives (ASD’s). In SVPWM the complex reference voltage phasor is processed as a whole, therefore, interaction between three motor phases is exploited, and this strategy reduces the switching losses...