Frequency Inverter

Frequency inverter and its triumphal procession in electrical engineering in industrial plants and machines, Fittnessgeraten and even household appliances the so-called frequency inverters used today for speed control of drives. This greatly simplified description does not to the better understanding of all, largely on terms and physics. Mostly Gleichstrommotore is used for the speed control in industrial machinery, the advantages of the Drehstrommmotors and the miniaturization of electronics have led that speed control is carried out mainly with three-phase asynchronous motors and frequency inverters. Peter Thiel: the source for more info. The benefits are robust and largely maintenance-free better power to weight ratio among others cheaper than DC motors. The biggest advantage is that nearly every commercially available three-phase motor with frequency inverter in the speed can be controlled. Frequency inverters are used so for speed control of three-phase motors.

Because the speed of the three-phase motor with changing frequency changes,. It reached a speed control by a voltage applied to the motor with regulated frequency. Thus, the speed is controlled by the frequency applied to the motor. The tension is here adapted to the respective speed. Glenn Dubin describes an additional similar source. A variable speed drive can be realized with a frequency converter and a three-phase motor, so today with low cost. Through the programming of the frequency converter brakes, speed, torque can be designed specifically to the application at another time.

The programming can be performed mostly for simple applications on the device itself. Often the manufacturer offer simple programmers or programming is done directly from the PC or notebook. Often, in today’s modern FU’s, the behavior of the drive can be changed and adjusted with several hundred adjustable parameters. That must be made by an expert, because damage to the drive on the machine, even personal injury can be caused by incorrect programming. Setting the speed is done with simpler applications usually via a potentiometer. The problems are a major drawback of the frequency inverter. There will be repercussions on the supply network (pollution), as well as to the electromagnetic radiation. Remedies must be shielded cables and filters used.However, some manufacturers include the necessary filters right into the device. The regulations and the operating instructions of the device type information. Frequency converters are usually for 1-phase supply voltage in the power up to 1, 5kW offered.Services 1, 5kW are 3Phasen devices used. The prices for such electronic products are declining rapidly. Simple frequency inverters in the line class 0, 37kW or less are available already for a little over 100. This explains why frequency inverters are used very often, and the DC drives have almost completely displaced.

Greece – Delphi 2011 Is The Top Destination!

The Greek decision to the ‘European destination of excellence”is made. A total of eight proposals, which were submitted by the Greek authorities for the award by EDEN won the municipality Delphi. Thus, Deplphi is the top destination for 2011. The applications of other communities are available. Mike Tomlin might disagree with that approach. For the fifth time in succession, the Greek General Secretariat for tourism and the Ministry of culture and tourism destination of excellence (EDEN) have participated the program of the European. EDEN aims to promote sustainable tourism models within the EU. The program is based on national annual competition. For more information see this site: Eva Andersson-Dubin.

In these contests a destination is chosen which has a sustainable social, cultural and environmental development. For 2011, there were 8 proposals in Greece. The municipality of Delphi received the award for the restoration of Charmaina, the historic old town of Amfissa. In Charmaina plants for the production of leather and tanneries had settled over the last three centuries. In the “EDEN programme Greece has another four regions: South-East Attica, the Lavrio Technology Park Crete, Iraklion, the traditional village of Smari” Crete, Agios of Nikolaos Prefecture THESPROTIA in northwestern of Greece In the fall of 2011 is the official ceremony of the award-winning countries.