The double output induction generator for variable speed applications.

An electrostatically actuated parylene microvalve for lab on a chip applications Yıldırım, Ender; Arıkan, Mehmet Ali Sahir; Külah, Haluk (2011-07-05) This paper presents a novel electrostatic microvalve to control in-plane flow on parylene based lab-on-a-chip-devices. Normally-closed design of the microvalve insulates the working fluid from the electric field, while providing low leakage up to 40 kPa inlet pressure. Prototypes are fabricated and tested for pull-in and flow characterization. Pull-in voltage is measured to be 150 V independent of the working fluid. No leakage is detected up to 20 kPa inlet pressure.
A Parabolic Band Hysteresis Current Controller for Doubly Fed Induction Generators Hamadi, Emad; Mortazavi, S. S. (2011-09-10) A parabolic band hysteresis current controller (PBHCC) for DFIG is proposed in this paper to control the switching frequency variations in rotor side converter (RSC). A generalized online technique is used to determine the set of unique parabolic boundary for any operation speed. The PIHICC then utilized to regulate the current in RSC. In contrast to PI controller, PBHCC shows a very good transient behaviour. Beside that, the steady state performance is improved by reducing the switching frequency considera...
STARTING TRANSIENTS IN SLIP ENERGY RECOVERY INDUCTION-MOTOR DRIVES .2. FLOWCHART AND PERFORMANCE AKPINAR, E; PILLAY, P; Ersak, Aydın (1992-03-01) The first part of this two-part paper described the starting transients of a slip energy recovery IM drive using the rotor rectifier and a single resistor instead of three resistors and an ac circuit breaker. The starting transient was divided into three stages; the first was the resistance starting, the second was the connection of the inverter and the third was the disconnection of the starting resistor. The diode bridge rectifier imposes constraints onto the machine equations; the relevant equations fo...
An electromagnetic micro power generator for low-frequency environmental vibrations Külah, Haluk (2004-01-01) This paper presents an electromagnetic (EM) vibrationto-electrical power generator which can efficiently scavenge energy from low-frequency external vibrations. The reported generator up-converts low-frequency environmental vibrations to a much higher frequency through a novel electro-mechanical frequency up-converter using a magnet, and hence provides efficient energy conversion even at low frequencies. Power is generated by means of electromagnetic induction using a magnet and coils on top of resonating c...
STARTING TRANSIENTS IN SLIP ENERGY RECOVERY INDUCTION-MOTOR DRIVES .1. FORMULATION AND MODELING AKPINAR, E; PILLAY, P; Ersak, Aydın (1992-03-01) A detailed study of the rotor phenomena including the rectifier commutation angle and inverter harmonics is facilitated by the use of the actual rotor conduction sequence variables instead of transformed variables that are used in most other IM drive systems. The starting transients of slip energy recovery IM drives comprising three stages are presented here; (a) the starting from zero speed with a starting resistor connected to the output of the rotor rectifier; (b) a transition period in which the invert...

Citation Formats

I. Çadırcı, “The double output induction generator for variable speed applications.,” Middle East Technical University, 1988.