Results 1 to 10 of about 1,066 (295)

Dip behaviour of grid connected invertors

22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013), 2013
The environmental awareness has led to a considerably increasing demand for renewable energy. The majority of renewable energy installations consist of invertor fed systems. In the distribution network, many common power quality phenomena voltage dips, under- and overvoltage, transients, unbalance and harmonic distortion) occur and they affect the ...
B. Verhelst, C. Debruyne, K. Stockman, J. Desmet   +3 more
openaire   +2 more sources

Static-invertor power supplies

Electronics and Power, 1975
Applications for static-invertor power supplies can range from simple emergency-lighting systems to the more ‘complex needs of a computer system or process-control equipment. But behind each application is the question: ‘Is it cost-effective?’
openaire   +1 more source

Rectifier/invertor reactive component minimization

IEEE Transactions on Industry Applications, 1989
The problem of filter-component placement is considered in connection with the size and cost minimization of the reactive elements in a rectifier/inverter. First, the optimal placement is found for the filter elements. Given the terminal constraints, two circuit topologies are possible: one with a capacitor filter on the DC side and the other with it ...
T.G. Habetler, D.M. Divan
openaire   +1 more source

Invertor drives for induction motors

Students Quarterly Journal, 1972
Induction motors have many advantages for industrial use, but the only simple and efficient way of controlling their speed is by using static invertors to supply them with variable-frequency, variable-voltage a.c.
openaire   +1 more source

New sinusoidal pulsewidth-modulated invertor

Proceedings of the Institution of Electrical Engineers, 1975
Sinusoidal p.w.m. invertors depend intrinsically for their operation on quite complex modulation processes. An in-depth study of these modulation processes is presented and the sources of possible operational problems are identified. These problems are shown to be manifest in low-frequency harmonic distortion and the possible existence of subharmonics ...
openaire   +1 more source

Bioprosthetic valve holder and strut invertor

Indian Journal of Thoracic and Cardiovascular Surgery, 1992
A simple and inexpensive method of holding and inverting the strut of a bioprosthetic valve is described.
Ajay Kaul, Yasmin Wadia, A. P. Chaukar
openaire   +1 more source

Reliability of Isokinetic Torque Values for Ankle Invertors and Evertors

Journal of Orthopaedic & Sports Physical Therapy, 1990
Partially funded through a grant from the Children's Hospital Los Angeles, School of Physical Therapy Alumni Association. The main purposes of this study were to determine the reliability of an isokinetic, inversion/eversion torque test with and without range of motion targets, as well as to assess the effects of a plantarflexion position and of limb ...
M, Leslie, J E, Zachazewski, P, Browne
openaire   +2 more sources

Invertor compensation in Germany

Institute of Legal Myongji University
In Germany, company employees who make invention during the term of their employment, so-called “service inventions”, are subject to the German Act on Employee Inventions, which regulates the rights and obligations of both employees and employers. There are statutory guidelines as to the amount of compensation the inventor should be paid.
openaire   +1 more source

Adjustable frequency invertors and their application to variable-speed drives

Electronics and Power, 1964
The paper with the above title is published in this month in the Proceedings. It will be read at a meeting of the Power Division on the 17th November at Savoy Place. Separate copies of individual papers are available, free of charge if called for at Savoy Place before the meeting, or 2s. by post.
D.A. Bradley, C.D. Clarke, R.M. Davis, D.A. Jones   +3 more
openaire   +1 more source

Magnetic-film-controlled invertor and isolator

Proceedings of the Institution of Electrical Engineers, 1964
The paper describes the principle of operation of an arrangement of conductors that is closely coupled to a magnetic film and can act as a signal invertor, modulator or isolator. The transmission characteristic is determined by the currents flowing in control conductors, which alter the film permeability.
openaire   +1 more source