This paper presents a modified two level inverter topology to improve the low speed performance of the direct torque controlled (DTC) three phase induction motor drive. Proposed method is based on current ripple principle. In this technique, the inverter switching states are derived as a function of rotor speed. This method gives low ripple in flux and torque at low speed operation when compare...

ABSTRACT: In any PV based system, the inverter is a critical component responsible for the control of electricity flow between the dc source, and loads or grid. This paper presents a solar PV generation system integrated to the grid. The results of matlab modeling of the system detail the comparative operation of inverter topologies which are the conventional two level inverters and multilevel ...

In this paper, an attempt has been made to investigate analytically the dynamic performance of selfcommutating current source inverter-fed induction motor drive with volts/Hz control strategy. Speed and current PI regulators are used in realization of closed loop control structure of the drive system. The closed loop mathematical modeling of the complete drive system is presented in the synchro...

With the rapid development and advancement of power electronics devices in recent years changing the scenario in the field of controlling and handling the power quality issues or problems very effectively. FACTS devices are the great examples of these. So in this paper we can choose one such FACTS device known as STATCOM a powerful shunt controller, for discussing its impact and depth how to ta...

Because of the acute shortage of conventional energy resources, renewable energy harness is gaining attention. Voltage source inverter forms the interface to feed the power from the renewable source to utility. In order to increase the modularity of the system, the use of several parallel inverters of reduced rating is preferred. An effective control strategy to maintain the amplitude and frequ...

One of the key challenges of employing photovoltaic systems is to extract maximum power of the panels. This problem is known as maximum power point tracking (MPPT) technique. The MPPT stands for establishing situation in which output power of the panels reaches its maximum allowable power. In this context, this paper is to assess the technical requirements to achieve maximum output power of a n...