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This paper presents the design of current mode PI controller for single-phase PWM inverter. The controller is comprised of inductor current as the inner loop and output voltage as the outer feedback loop. The control design is carried out using Sisotool, which is provided in Matlab. By using this tool, users can examine the effects of changing the gain control values to system's transient response...
Aimed at the fluctuate characteristics of isolated wind power system export voltage and frequency, apply the Space Vector Pulse Width Modulation technology, design the control system of small capacity converter. Build the rectifier and inverter model in Matlab/simulink environment and simulated. The results show that the converter base on the control of SVPWM can dampen the wind power system output...
In this paper, a design and implementation of a digital signal controller (DSC) for high frequency-based grid-tie inverter connected to wind emulator system is designed, fabricated, and tested. A 150 MHz (6.67-ns Cycle Time) Texas Instruments TMS320F28335 processor chip is used as the heart of the developed control board. DSC based board is a highly integrated, high-performance solution for demanding...
Inverter control is to enable the inverter output sinusoidal voltage stability, dynamic response, robustness. Uses the current SPWM to control the inverter and design the closed-loop transfer function of system based on ITAE optimal model, get the controller parameters. To control the inverter with the optimized parameters, simulation results show the current inverter SPWM control system can adapt...
This paper proposes a nonlinear control strategy for single-phase PWM current-source inverters based on Lyapunov's direct method. The main idea in this method is to form an energy-like Lyapunov function in terms of the inverter system states and then determine the control strategy that makes the time derivative of the Lyapunov function always negative for all values of the states. It is shown that...
This paper proposes a new extended boost quasi Z-source inverter (ZSI) and a simple modulation and control method based on one-cycle control for controlling a grid connected PEM fuel cell energy system. ZSIs are gaining popularity. Similarly one-cycle controllers are becoming popular due to their simplicity, ease of implementation and fast response. However, this control method has not been developed...
This paper shows a three-phase feeding system to rural areas that are supplied by a single-phase feeder. This proposed system allows the use of three-phase agricultural equipments. The system proposed is formed by two bidirectional three-phase PWM converters, easily found to acquire at local market. The energy processed by single-phase transformer is maximized due the use of the power factor correction...
An inverter control design in DQ reference frame takes 3-phase sinusoidal signals and converts them to the DQ-frame to make a 2-phase based DC variable control. The error is calculated by subtracting the feedback from reference and then feedding it to PI controllers. The outputs of PI controllers are of the voltage form and transferred back to the ABC frame and fed to SPWM modules. P+Resonant controllers...
This paper proposes a novel control scheme which possesses four-phase PWM dimming control loop for backlight inverter. We adopt four-phase PWM dimming control circuit to control the brightness of twelve lamps. Each phase can control four or two lamps. Circuit architecture is full bridge phase-shift circuit which can improve the total efficiency of the driving circuit. From the experimental results,...
This paper presents a voltage source inverter which is controlled with space vector pulse width modulation (SPWM) designed using three layers feed forward back propagation based artificial neural network (ANN). The input output samples were obtained using simulations in Matlab Simulink; which were used for extensive training of network. With calculated weights and biases, the neural network was implemented...
This paper presents a multilevel multistage inverter design and its corresponding control strategy. The hybrid inverter has a high voltage stage composed of the six-switch conventional three phase inverter with its output connected in series with the outputs of three-level H-bridge medium and low voltage stages. The voltage ratio has been selected to enable both one state - approximation and PWM control...
This paper presents a new hybrid current control scheme for dead-time compensations and power density optimization of grid-connected dc/ac inverter. A sliding mode controller is designed for compensating the dead-time nonlinear operations, and a PI controller operates in the linear areas. According to the SMC controller output, the unnecessary gate drive signals are removed and the counter side switch...
A 1 MW/6000 V cascaded neutral point clamped (NPC) inverter is developed for medium voltage high power induction motor drives and an effective control technique is proposed in this paper. A pulse rotation method of SPWM is implemented for a wide range of output voltage. The output voltage and power, and series-capacitor DC voltage of each module are perfectly balanced with switching at a low frequency...
Control of an advanced high-speed flywheel energy storage system (FESS) based on a high-speed surface mount permanent magnet synchronous machine (PMSM) is explored in this paper. A PWM inverter/rectifier controls the bi-directional flow of energy for charging and discharging the flywheel. During charging, an inner current loop controller and an outer speed loop controller regulate the system performance...
This paper presents a design of pulse-width modulated (PWM) controller module in a MCU based on MCS-51 structure. The design can generate 2-channel programmable periodic PWM signals. These output PWM signals from MCU can be used for a variety of applications including motor control. The function of the design allows users to select independent or complementary inversion timing relationships between...
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