* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Pulse Discharge Presentation
Three-phase electric power wikipedia , lookup
Electrical substation wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Electrical ballast wikipedia , lookup
Spark-gap transmitter wikipedia , lookup
History of electric power transmission wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Current source wikipedia , lookup
Power electronics wikipedia , lookup
Distribution management system wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Voltage regulator wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Opto-isolator wikipedia , lookup
Buck converter wikipedia , lookup
Stray voltage wikipedia , lookup
Alternating current wikipedia , lookup
Surge protector wikipedia , lookup
KEMET Pulse Discharge Products High Temperature (200ºC), High Voltage (up to 3.5kV) Large Case Size Detonation Applications • Electronic Fuses are used extensively in military and civilian applications to detonate explosives • Firing capacitors are used in the Fuse circuitry to provide a stored charge and it is this stored energy that detonates the explosive • The energy stored within the capacitor is expressed by the equation: Energy = ½ CV2 C=Capacitance (F), V=Voltage • To achieve high energy density the capacitors must therefore operate at high voltage • This energy is typically discharged within a pulse of < 100 nanoseconds • KEMET has developed a series of Pulse Detonation capacitors that combine high voltage and high temperature capability that is particularly important for Downhole Applications where temperatures can be 200oC or higher Downhole • Downhole pulse applications such as fireset circuitry require components that can be used deep within the Earth’s surface, in high shock & vibration environments • The explosive breaks through a section of piping to allow the flow of oil and gas back up to the surface • The firing capacitor must: – – – – – Survive high dV/dt charging Achieve a high current discharge in a short time Have temperature stable, guaranteed minimum capacitance Have a high minimum voltage breakdown Be reliable at high temperatures (200ºC) KEMET Pulse Detonation Series High Current Capability Kemet HT 4540 104 1250V Pulse Discharge Capacitor Kemet HT C0G 4540 Pulse Discharge Capacitor Discharge Current Vs. Time (ns) Discharge Current Vs. Applied Voltage 4000 3000 2000 3000 Current (A) Current (A) 1000 0 150nF 1000V 2000 100nF 1250V 68nF 2000V 27nF 3000V 1000 18nF 3500V -1000 0 -2000 0 200 400 600 Time (ns) 800 1000 0 500 1000 1500 2000 Voltage (V) 2500 3000 3500 4000 Key Characteristic Comparison • KEMET’s solution is compared to a Competitor with respect to some selected key characteristics below: Parameter KEMET HT C0G ≤ 0.1% Competitor N2200 ≤ 0.1% Capacitance Change @ 200oC Capacitance Change @ Applied Voltage + 0.2% - 0.1% - 40% -10% Electrode System BME Ni PME Pd/Ag Dielectric Dissipation Factor Comparison of Capacitance Capacitance Change Vs Temperature @ Applied Voltage 10.0% KEMET HT C0G Capacitance Change 0.0% -10.0% -20.0% -30.0% Competitor N2200 -40.0% -50.0% -60.0% 0 25 50 75 100 125 Temperature (oC) 150 175 200 225 Energy Density Comparison 1000Vr Pulse Dischage Capacitors @ 200oC Energy Density Vs. Applied Voltage 0.8 Breakdown HT C0G KEMET HT C0G 4540 68nF 0.7 Competitor N2200 3640 200nF Energy Density (J/cc) 0.6 0.5 Discharge HT C0G Breakdown N2200 0.4 Dischage N2200 0.3 0.2 0.1 0 0 500 1000 1500 2000 Applied Voltage (V) 2500 3000 KEMET Pulse Detonation Series Customer Advantage • These capacitors have high breakdown voltage performance at high temperatures and are rated to 200oC • No loss of capacitance with high temperature and high voltage results in stable, robust products • These advantages allow customers to realize higher energy and more consistent detonation resulting in better performance even at temperatures of 200oC KEMET Pulse Detonation Case Size / Maximum CV Offerings Pulse Voltage 1000V 2824 3040 3640 4540 56nF 100nF 120nF 150nF 1250V 39nF 68nF 68nF 100nF 2000V 22nF 39nF 47nF 68nF 3000V 8.2nF 15nF 18nF 27nF 3500V 5.6nF 10nF 15nF 18nF KEMET Pulse Detonation Stacks Custom stacks are also available on request that allow higher capacitance values within the same pad size Lead have been added to larger case sizes for additional robustness 3640, 47nF, 1000V, 2000C Stacks of larger cases have been made for higher capacitances 6560 (3), 470nF, 1000V 2000C Stack • For more information on other new exciting KEMET products, visit our homepage (kemet.com) MICROSITES: kemet.com/pulsedischarge