The increasing penetration of inverter-based distributed generations (DGs) significantly affects the fault characteristics of distribution networks. Fault analysis is a keystone for suitable protection scheme design. This paper presents the modelling methodology for distribution networks with inverter-based DGs and performs fault simulation based on the model. Firstly, a single inverter-based D...

The number of installations of photovoltaic solar panels and associated inverter systems within residential premises is increasing. As these systems incorporate a power electronics front end, they will have an influence on the quality of supply in regards to voltage harmonics. This paper investigates the harmonic impact on an 11kV distribution system due to the installation of residential type ...

Standard lowand medium-power induction motor drives are based on the pulsewidth modulation (PWM) voltagesource inverter fed from a diode rectifier. The dual topology, based on the current-source inverter/rectifier structure is used in mediumand high-power applications. This paper analyzes the existing motor drives based on current-source topologies and proposes a control strategy that addresses...

Absrracr-Various circuit topologies and control techniques have been proposed on inverters for AC power supply applications but without much emphasis on very high power systems. Incorporation of a non conventional inverter topology known as multilevel inverter with an optimal PWM based control scheme is proposed in this work for high voltage applications when the switching frequency of the inve...

This paper presents a new transformer based multilevel inverter, with a novel pulse width modulation scheme to achieve seven-level inverter output voltage. The proposed inverter switching pattern consists of three fundamental frequency sinusoidal reference signals with an offset value, and one high frequency triangular carrier signal. This switching scheme has been implemented using an 8-bit Xi...

In this paper, an alternative approach for performing the pre-characterization of CMOS digital gates is proposed. This method aims to eliminate the use of circuit simulators like HSPICE during the cell pre-characterization in order to accelerate it. This procedure is necessary for the operation of technology models such as CCS, NLDM and NLPM. This is achieved by employing an analytical inverter...

This paper presents the novel multilevel inverter fed control structure for induction motor based Direct Torque Control (DTC) strategy using a seven-level Multi Point Clamped (MPC) Voltage Source Inverter (VSI) is presented. It is shown that the multilevel topology presents enough degrees of freedom to control both electromagnetic torque and stator flux with very low ripple and high dynamics on...

This paper presents a micro controller based control of multilevel inverter for single phase Induction motor. IGBT is used as power element. Pulse width modulation techniques (PWM), introduced three decades ago, are the most used methods to control the voltage and frequency supplied to electrical AC machines. This work proposes a new switching scheme for the cascaded H-Bridge multilevel inverte...

A new type of single-phase stand-alone induction generator using a three-phase induction machine and a single-phase voltage-source PWM inverter is introduced. The generator scheme is capable of producing constant load frequency with a very well regulated output voltage. A small lead acid battery and a single-phase full diode-bridge rectifier are used to feed the inverter. The inverter feeds one...

Give a transistor-level circuit schematic and sketch a stick diagram for a Problem 11 Assume a CMOS inverter designed in the ON 0.5u CMOS process drives. Complementary MOSFET (CMOS) technology is widely used today to form circuits in numerous The circuit diagram of the CMOS inverter is shown in figure (4). 2.2 Charging and Discharging in CMOS Inverter...... 16. 2.3 Energy Recovery 5.31 Circuit ...