Canacsinh, HirenFernando Silva, J.Luis Redondo2017-11-292017-11-292017-06CANACSINH, Hiren; FERNANDO Silva, J.; REDONDO, L. M. - PWM Voltage Droop Compensation for Bipolar Solid-State Marx Generator Topologies. IEEE Transactions on Plasma Science. ISSN 0093-3813. Vol. 45, N.º 6 (2017), pp. 975-9800093-3813http://hdl.handle.net/10400.21/7614Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2016 do Instituto Politécnico de Lisboa. Código de referência IPL/2016/MBOCDTI_ISELThis paper presents a novel technique for the voltage droop compensation of long pulses in solid-state bipolar high-voltage Marx generators. Considering the modularity of Marx generators the compensation consists in adding one extra stage to perform as a pulsewidth modulation circuit. This stage voltage is added to the output positive or negative pulses, and an output LfCf filter is included to smooth the voltage pulse waveform. A five-stage laboratory prototype of this circuit has been assembled using 1200-V Insulated Gate Bipolar Transistors and diodes with 1000-V dc input voltage. The circuit was operated at 50-Hz bipolar pulse rate, giving 4-kV bipolar pulses, into a resistive load, with 100-mu s pulsewidth and 9.5-ms relaxation time. The circuit was able to compensate 10% of bipolar pulse voltage droop.engPulse width modulation (PWM)Pulsed power systemsSolid-state unipolar/bipolar Marx generatorsVoltage droop compensationjournal article10.1109/TPS.2017.2692392