Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 140 for “"current control"”.
-
Development of current control for three phase multilevel inverter
… to AC signal. This project aims to develop a current control method for a multilevel inverter. The purpose of adding a controller is so that the output from the said device, can be controlled and maintained. The simulations of the project are done by using MATLAB Simulink. Results obtained are …
-
Nonlinear Deadbeat Current Control of a Switched Reluctance Motor
High performance current control is critical to the success of the switched reluctance motor (SRM). Yet high motor phase nonlinearities in the SRM place extra burden on the current controller, rendering it the weakest link in SRM control. In contrast to linear motor control techniques that respond …
-
Grid current control methods for MV wind energy conversion systems
… for offshore wind energy application. The current common solution is to make the two-level low voltage converter in parallel in order to achieve sufficient power rating. However, research has found that by employing medium voltage multilevel converters will reduce the cost of energy. …
-
Development of PID current control for DC motor using arduino
… this project is to design and to develop of PID Current Control that could be applied for the DC motor. The control technique was called as current control technique by comparing the output current with the reference current. Thus, the PID controller will force the output current to follow the …
-
Development of repetitive current control for lead acid battery using arduino
This project focused on development of repetitive current control for lead acid battery using Arduino. The project uses Buck-Boost converter circuit with reference voltage of 14V from lead acid battery. The range of buck operation input voltage is between 18V to 15V while boost operation input …
-
Development of p resonant current control for dc motor by using Arduino
The DC motors have been popular in the industry control area for a long time because DC motors have many good features. Generally, DC motor speed is controlled by using potentiometers, variable resistors, and pulse-width-modulation. Speed control also can be achieved by variable battery tapping, …
-
Hybrid PWM Update Method for Time Delay Compensation in Current Control Loop
… proposed to eliminate the effect of the one-step control time delay Td one without losing the full duty cycle range. Without the Td one to cause linear phase shifts that limit the control bandwidth and affect closed-loop stability, a very high quality digital current control can be achieved, such …
-
Programmable Current Control of Silicon Field Emitter Arrays Using Gate-All-Around MOSFETs
… spatial and temporal non-uniformity of emission current impede the adoption of FEAs in these applications. The current approach to address these challenges involves integrating a resistor, nanowire (NW) current limiter, or metal-oxide-semiconductor field-effect transistor (MOSFET) in series with …
-
Derivation of Parabolic Current Control with High Precision, Fast Convergence and Extended Voltage Control Application
Current control is an important topic in modern power electronics system. For voltage source inverters, current control loop ensures the waveform quality at steady state and the fast response at transient state. To improve the current control performance, quite a few nonlinear control strategies …
-
Development of time delay current control for lead acid battery 12 v DC by using arduino
Development of time delay current control for lead acid battery 12 V dc by using Arduino is the aim of this thesis. The development problem is necessary before applying control techniques to guarantee the execution of any task according to a desired input with minimum error. The main objective of …
-
Malaria situation in Namibia: A study of vector species and effectiveness of the past and current control strategies in selected parts of Namibia
… in an area where the mainstay for vector control has been indoor residual house spraying (IRS) with 75% DDT wettable powder since the 1960’s, reassessment of the vector species composition and its resting and biting behaviour are absolutely important. In addition to insecticide house …
-
A Wide Range and Precise Active and Reactive Power Flow Controller for Fuel Cell Power Conditioning Systems
… voltage disturbance in frequency domain for the current control design in the grid-tie inverter applications and to propose current control techniques in order to minimize its impact and maximize feasibility of the power conditioning system in distributed generations. Because the grid voltage is …
-
A strip theory approximation for wave forces on submerged vehicles in finite depth water
… as mine surveillance along enemy coastlines. Currently the control of AUV's in shallow water is very limited, largely due to a lack of knowledge of vessel forces in shallow water, especially in the presence of surface wave effects. The limitations of current control systems do not afford …
-
Generalized Average-Current-Mode Control of Single-Phase AC-DC Boost Converters with Power Factor Correction
The dissertation presents a generalized average-current-mode control technique (GACMC), which is an extension of the average-current-mode control (ACMC) for single-phase ac-dc boost converters with power factor correction (PFC). Traditional ACMC is generalized in a sense that it offers improved …
-
Improving the efficiency of clinical trial designs by using historical control data or adding a treatment arm to an ongoing trial
… the experimental treatment of interest to a control treatment. Confirmatory trials are expensive and take a lot of time in the planning, set up and recruitment of patients. Efficient methodology in clinical trial design is critical to save both time and money and allow treatments to become …
-
HARMONIC MODELING AND SIMULATION OF NON-LINEAR PWM INVERTERS IN DISTRIBUTED GENERATION SYSTEMS
… equations that use the system and controller parameters to accurately characterize the power conversion harmonics resulting from the deployment of hysteresis current-controlled inverters within the ac network. In addition, the ac and dc harmonic interactions under both ideal system …
-
Mitigation of Asymmetrical Currents in Permanent Magnet Synchronous Machine with Unbalanced Stator Winding Impedance for Electric Vehicle Application
… asymmetry draws unbalanced three-phase stator currents if the conventional current control scheme is employed. Due to these asymmetrical stator currents, some issues such as uneven heating of the inverter phases and switches, additional losses in the motor due to skin and proximity effects, …
Page 1 of 7