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Power electronic circuits which contain nonlinear inductances are described by a set of nonlinear state equations. A sampled-data model is presented for the circuit from which a set of linear state equations can be formulated. In the sampled-data model, the nonlinear inductor is modeled by an ideal sampler, a variable gain, and a clamp. The state variables(More)
This paper describes the design and implementation of a microcontroller-based fuzzy logic average current-mode control (ACMC) for dc-dc converters. A fuzzy logic ACMC boost converter operating in the continuous conduction mode has been designed using a PIC16C782 microcontroller. Design procedures and implementation issues are discussed. No complex algorithm(More)
Analysis, design, simulation and DSP-based implementation of a digital controller using a Posicast element are presented for the boost converter. Different from the classical Posicast approach, the proposed control method here reduces undesirable sensitivity greatly by using Posicast within a feedback loop. Furthermore, unfavorable effects on system(More)
A capacitor charging power supply (CCPS) has been assembled. A full-bridge series resonant topology using MOSFETs as switching elements makes up the bulk of the high-power section of the CCPS. A high-voltage transformer couples the output stage to the resonant inverter, and the secondary current of this transformer is rectified to provide the charging(More)
This paper presents hybrid average current-mode control (ACMC) for a boost converter using an 8-bit microcontroller. In order to demonstrate the feasibility of a hybrid ACMC DC-DC converter, an ACMC boost converter operating in the continuous conduction mode has been designed using a PIC16C782 microcontroller. System modeling, main design procedures, as(More)
A method used to determine the harmonic components of the output of a space vector PWM inverter is presented. The method calculates the Fourier coefficients of individual positive and negative pulses of the output PWM waveform and adds them together using the principle of superposition to calculate the Fourier coefficients of the entire PWM output signal.(More)
Both linear PID controllers and fuzzy controllers are designed and implemented for a boost converter. Comparison between the two controllers is made in the aspect of design, implementation and experimental results. Design of fuzzy controllers is based on heuristic knowledge of the converter and tuned using trial and error, while the design of linear PID and(More)
The design and construction of a low-power low-cost power supply capable of charging an energy storage capacitor from a 120-V ac source and capable of power-factor correction (PFC) is presented. The load that is generally connected to a capacitor-charging power supply (CCPS) is a pulsed power load (i.e., laser, cardiac defibrillator, or flash lamp). A(More)
Three techniques for charging power capacitors to voltages in the range of 2-40 kV are examined and compared. The first technique, which uses a high-voltage DC power supply with a charging resistor, is shown to have a maximum efficiency of 50%. This requires that both the high-voltage DC power supply and the charging resistor have increased power ratings.(More)