Control of PV-grid connected inverter introduces a delay between sinusoidal current reference and measured current at the output of the inverter. This leads to a phase difference between the current injected by the inverter and grid voltage when using a simple PI controller. To overcome this problem, PI controllers used to control injected currents to the grid have been substituted, in this stu...

Induction heating is a famous technology and very filter, and a resonant inverter(8). V) this voltage enough to control of the IGBT circuit. 4IGBT. It is compared with the existing inverter topologies, half bridge and full bridge. The ordinary circuit of an AC-AC converter for induction heating typically includes a control rectifier By adjusting thewidth of the pulse that turns ON the IGBT. Abs...

In this study, we provide a method to independent control the active current and the idle current which are output by the inverter, the power factors are achieved to be adjusted. Moreover, the angle of grid needs to be inspected by the vector control in real time so that the Software Phase-Locked Loop which has a powerful ability in phase locking under the rotating reference frame is adopted to...

In this paper, analysis of cascaded H-bridge multilevel inverter in DTC-SVM (Direct Torque Control-Space Vector Modulation) based induction motor drive for FCEV (Fuel Cell Electric Vehicle) is presented. Cascaded H-bridge multilevel inverter uses multiple series units of H-bridge power cells to achieve medium-voltage operation and low harmonic distortion. In FCEV, a fuel cell stack is used as t...

The control of SRM was discussed: current chopping control, angle position control. This paper presents an inverter circuit and a fuzzy sliding mode control method to minimize the torque fluctuation and noise of the SRM. Based on the experimental results, Using the inverter circuit and fuzzy sliding mode control method can effectively minimize the torque fluctuation and noise of the SRM, For th...

Cascaded Hybrid MultiLevel Inverter (CHMLI) is an attractive topology for high voltage DC-AC conversion. This paper focuses on a single-phase five-level inverter with reduced number of switches. The inverter consists of a full bridge inverter and an auxiliary circuit with four diodes and a switch. The inverter produces output voltage in five levels: zero, +0.5Vdc, +Vdc, -0.5Vdc and –Vdc.. A nov...

The multilevel inverters have highly desirable characteristics in high power high voltage applications. The multilevel inverter was started first with diode clamped multilevel inverter. Later, various configurations have been came into existence for many applications. However the multilevel inverters have some demerits such as requiring higher number of components, PWM control method is complex...

In this paper, two intelligent direct torque control strategies are compared with the classical direct torque control (C-DTC) scheme, namely neural network control (NNC) and neuro-fuzzy control (NFC) are introduced to replace the hysteresis comparators and lookup table of the C-DTC for pulse width-modulation-inverter-fed induction motor drive, to solve the problems of torque ripple and inconsta...

6.1 INTRODUCTION The previous chapters have discussed the development of the MPPT algorithm and the control of the DC-DC converter in a standalone PV system. A grid-connected PV system is composed of a photovoltaic array, DC-DC converter, DC link capacitor, single phase DC-AC inverter, filter inductor, power grid, and non-linear load. The grid interconnection of a PV power generation system has...