A resonant driver for a Piezoelectric Motor (PZM) is presented, analyzed and tested experimentally. Following a short description of the linear PZM applied in this study, the paper covers the analytical relationships of the buck driven push-pull parallel resonant inverter stage that includes a novel single transistor direction switches. It is shown that the proposed topology is compatible with ...

Permission is given to copy this work provided credit is given and copies are not intended for sale. Use or inclusion of any portion of this ETD in a work intended for commercial use will require clearance by the copyright owner. Abstract Distributed generation for consumer applications is a relatively new field and it is difficult to satisfy both cost and performance targets. High expectations...

This paper attempts to enhance the performance of a green energy induction motor drive. The electronic power converters become indispensable part of the renewable energy systems (RES). The solar photovoltaic (PV) system is efficiently operated with artificial neural network (ANN) based maximum power point tracking (MPPT) algorithm. The inverter topologies for the green drive scheme are analyzed...

Based on the commutation property of T-type neutral point clamped (T-NPC) three-level inverter, a novel zero-current-transition (ZCT) soft-switching topology is proposed. The proposed employs only two auxiliary switches and one inductor capacitor (LC) resonant tank each phase leg. process technique analyzed. results show that all main leg can achieve soft without changing pulse width modulation...

This paper describes failsafe control methods for electric vehicles (EVs) with the failsafe structure in which front and rear wheels are driven independently. Based on failure-diagnosis results, the failsafe control is done by dividing fault states into two types, i.e. a slight failure such as a current or a speed sensor failure and a serious failure such as an inverter or a motor failure. For ...

Single-switch inverters such as the conventional class E inverter are often highly load sensitive, and maintain zero-voltage switching over only a narrow range of load resistances. This paper introduces a design methodology that enables rapid synthesis of class E and related single-switch inverters that maintain ZVS operation over a wide range of resistive loads. We treat the design of ClassE i...

Solid rotor alternator is of great importance at high ratings for generation of electric power as they can with stand huge centrifugal forces developed in the alternator. When a non liner load is connected to such an alternator network it invariably injects harmonics into the system which becomes a power quality issue. In order to compensate for the harmonic content a shunt active filter is con...

A high efficiency and operating life of grid feeding solar photovoltaic (PV) inverters are demanded. Because of reduced dclink capacitor requirement, current source inverter (CSI) offers higher reliability than the voltage source based solar inverter. Nonetheless, conventional three-phase pulse width modulated (PWM) current source based solar inverter injects high earth leakage current into the...

The aim of this paper is the study of speed sensorless control of IM drive by using dc link quantities. The sensorless control method is to determined the appropriate moment when the motor winding should be commutated. This moment is determined by the rotor position. In this type of drive, the limitations of using various sensors for the measurement of rotor speed, stator current & voltages are...

Distributed generation (DG) will play an important role in future power generation systems, especially in stand-alone applications. Three phase four-leg inverter is a well-known topology which can be used as an interface power converter for DGs. Thanks to the fourth leg to provide the neutral path, the four-leg inverter is able to supply balanced loads as well as unbalanced loads. In this paper...