Title :
Bipolar correction power supplies with photovoltaic couplers
Author :
Jensen, J.-P. ; Reimann, K.H.
Author_Institution :
DESY, Hamburg, Germany
Abstract :
At present the correction power supplies in use at DESY are of unipolar type with polarity switcher. The advantages of this design are simplicity and low cost, with the disadvantages of limited dynamic behavior and poor zero crossing control. Photovoltaic couplers are now available for driving MOSFETs without the need for a gate-driving unit between controller and MOSFET. The gate voltage for the MOSFET is generated by photovoltaic couplers. The output stage of the bipolar power supplies is a linear H-bridge. Around zero output current the MOSFETs conduct a small bias current which improves the zero crossing behavior
Keywords :
MOSFET circuits; bipolar transistor switches; nuclear electronics; opto-isolators; power bipolar transistors; power semiconductor switches; power supplies to apparatus; DESY; MOSFETs; bipolar correction power supplies; bipolar power supplies; gate voltage; linear H-bridge; photovoltaic couplers; zero crossing behavior; Bridge circuits; Couplers; MOSFETs; Magnets; Photovoltaic systems; Power supplies; Protective relaying; Solar power generation; Switching circuits; Voltage;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record
Print_ISBN :
0-7803-2544-3
DOI :
10.1109/NSSMIC.1994.474337
