Fast valve power loss evaluation method for modular multi
... The method of [12] is accurate, except that it is based on detailed switching model of MMC and therefore the valve power loss estimation requires significant of simulation time. It may take one week to simulate 5-seconds dynamics of a 401-level MMC [13]. Therefore, the valve power loss evaluation ba ...
... The method of [12] is accurate, except that it is based on detailed switching model of MMC and therefore the valve power loss estimation requires significant of simulation time. It may take one week to simulate 5-seconds dynamics of a 401-level MMC [13]. Therefore, the valve power loss evaluation ba ...
March Pump General Installation Guide
... Operating the pump for excessive periods of time at shut off (discharge valve fully closed) or at near shut off conditions could cause the liquid to rise in temperature which could cause failure of internal parts and failure of pump. 9. Flow rates should be controlled by the discharge valve only, ne ...
... Operating the pump for excessive periods of time at shut off (discharge valve fully closed) or at near shut off conditions could cause the liquid to rise in temperature which could cause failure of internal parts and failure of pump. 9. Flow rates should be controlled by the discharge valve only, ne ...
MAX8647/MAX8648 Ultra-Efficient Charge Pumps for General Description
... Six White/RGB LEDs in 3mm x 3mm Thin QFN The MAX8647/MAX8648 drive up to six white LEDs or two sets of RGB LEDs with regulated constant current for display backlight and fun light applications. By utilizing an inverting charge pump and extremely lowdropout adaptive current regulators, these ICs achi ...
... Six White/RGB LEDs in 3mm x 3mm Thin QFN The MAX8647/MAX8648 drive up to six white LEDs or two sets of RGB LEDs with regulated constant current for display backlight and fun light applications. By utilizing an inverting charge pump and extremely lowdropout adaptive current regulators, these ICs achi ...
specialtopics_13
... SiC Arresters When suppressor operates an arc in gap This arc must quenched as surge pass, or resistor will be destroyed In other cases the gap is not required Arresters vary depending on their voltage class & duty however has: Gaps, coils, valve elements (nonlinear res.) They are stacked ...
... SiC Arresters When suppressor operates an arc in gap This arc must quenched as surge pass, or resistor will be destroyed In other cases the gap is not required Arresters vary depending on their voltage class & duty however has: Gaps, coils, valve elements (nonlinear res.) They are stacked ...
A Review Paper on Icing and Methods to De
... power flow without adding any deicer. After the ice disaster of 1998 in north eastern America, Hydro-Québec developed a de-icing strategy for 120~315kV lines. A computer program has been developed to simulate the ice buildup on conductors and melting the ice using the heat generated by the currents ...
... power flow without adding any deicer. After the ice disaster of 1998 in north eastern America, Hydro-Québec developed a de-icing strategy for 120~315kV lines. A computer program has been developed to simulate the ice buildup on conductors and melting the ice using the heat generated by the currents ...
LIGHTNING THEORY – Explanations
... Contactor, relay, and breaker operations. Unless inherently or otherwise protected, contactors, relays, and breakers (or other overcurrent circuit protective devices) can often produce switching surges that have complex waveforms and amplitudes that are several times greater than the nominal system ...
... Contactor, relay, and breaker operations. Unless inherently or otherwise protected, contactors, relays, and breakers (or other overcurrent circuit protective devices) can often produce switching surges that have complex waveforms and amplitudes that are several times greater than the nominal system ...
The Glass Industry - Electric Melter Design
... equal, uniform power release is accomplished within the melter. Thus, these furnaces will practically always be square, or a rectangle with whole number multiples of width to length as shown in Fig. 4. The two-phase system is particularly applicable to most furnace sizes, except those that are very ...
... equal, uniform power release is accomplished within the melter. Thus, these furnaces will practically always be square, or a rectangle with whole number multiples of width to length as shown in Fig. 4. The two-phase system is particularly applicable to most furnace sizes, except those that are very ...
PDF：213KB
... main current but also turn it off, provided with a gate drive circuit. Unlike conventional thyristors, they have no commutation circuit, downsizing application systems while improving efficiency. They are the most suitable for high-current, highspeed switching applications, such as inverters and cho ...
... main current but also turn it off, provided with a gate drive circuit. Unlike conventional thyristors, they have no commutation circuit, downsizing application systems while improving efficiency. They are the most suitable for high-current, highspeed switching applications, such as inverters and cho ...
AP7115
... An 1uF input capacitor is required between the AP7115 input pin and GND. There are no requirements for the ESR on input capacitor, but tolerance and temperature coefficient must be considered. ...
... An 1uF input capacitor is required between the AP7115 input pin and GND. There are no requirements for the ESR on input capacitor, but tolerance and temperature coefficient must be considered. ...
electrochemical energy systems
... In an electrode concentration cell the electrodes themselves have different concentration. They may be gas electrodes operating at different pressures or amalgam electrodes with different concentrations. ...
... In an electrode concentration cell the electrodes themselves have different concentration. They may be gas electrodes operating at different pressures or amalgam electrodes with different concentrations. ...
this PDF file
... in Great Britain and in Germany. The chief electrician of Edison Central Station, Pearl Street, New York City, J. W. Lieb visited the Ganz Works in 1885 and was filled with enthusiasm; he urged the Edison Electric Light Company to buy the patent rights to manufacture the Ganz transformers in the Uni ...
... in Great Britain and in Germany. The chief electrician of Edison Central Station, Pearl Street, New York City, J. W. Lieb visited the Ganz Works in 1885 and was filled with enthusiasm; he urged the Edison Electric Light Company to buy the patent rights to manufacture the Ganz transformers in the Uni ...
Motor Mounted Components - Altra Literature Portal
... As can be seen, there is an additional load on the motor and brake in both cases. The effect of the response time increases with increasing brake size. Consequently, it is advisable to reduce the response time, especially with medium-sized and large brakes and with a high cycle rate. This can be ach ...
... As can be seen, there is an additional load on the motor and brake in both cases. The effect of the response time increases with increasing brake size. Consequently, it is advisable to reduce the response time, especially with medium-sized and large brakes and with a high cycle rate. This can be ach ...
ESD8104 - ESD Protection Diode
... clearly defined in the spec how to specify a clamping voltage at the device level. ON Semiconductor has developed a way to examine the entire voltage waveform across the ESD protection diode over the time domain of an ESD pulse in the form of an oscilloscope screenshot, which can be found on the dat ...
... clearly defined in the spec how to specify a clamping voltage at the device level. ON Semiconductor has developed a way to examine the entire voltage waveform across the ESD protection diode over the time domain of an ESD pulse in the form of an oscilloscope screenshot, which can be found on the dat ...
LOW POWER DUAL OPERATIONAL AMPLIFIERS Description
... Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltage may be larger than V+ without damaging the device. Protection should ...
... Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltage may be larger than V+ without damaging the device. Protection should ...
FSQ0370RNA, FSQ0370RLA Green Mode Fairchild Power Switch (FPS™) FSQ0370RNA / FSQ0370RLA
... current through the optocoupler transistor becomes almost zero (refer to Figure 14). Then, VFB climbs up in a similar manner to the overload situation, forcing the preset maximum current to be supplied to the SMPS until the overload protection is activated. Because excess energy is provided to the o ...
... current through the optocoupler transistor becomes almost zero (refer to Figure 14). Then, VFB climbs up in a similar manner to the overload situation, forcing the preset maximum current to be supplied to the SMPS until the overload protection is activated. Because excess energy is provided to the o ...
Three-Phase Power Quality Analyzer PowerPad Model 3945-B
... look inside your electrical system and see what’s going on? Troubleshooting would be so much easier if you could see the volts, amps and harmonic content in real time and take pictures to document and analyze. Now you can do just that and more with AEMC’s PowerPad. The full color graphical display l ...
... look inside your electrical system and see what’s going on? Troubleshooting would be so much easier if you could see the volts, amps and harmonic content in real time and take pictures to document and analyze. Now you can do just that and more with AEMC’s PowerPad. The full color graphical display l ...
VIII .Typical Transmission Line Surge Arrester Installation
... linear resistors of metal oxide, mainly ZnO without spark gaps , is today the most used. The Metal Oxide resistor column, together with the accompanying supporting construction, comprises the actual active part of the arrester. The column consists of individual Metal Oxide resistors stack on top of ...
... linear resistors of metal oxide, mainly ZnO without spark gaps , is today the most used. The Metal Oxide resistor column, together with the accompanying supporting construction, comprises the actual active part of the arrester. The column consists of individual Metal Oxide resistors stack on top of ...
TPS54325 数据资料 dataSheet 下载
... The main control loop of the TPS54325 is an adaptive on-time pulse width modulation (PWM) controller that supports a proprietary D-CAP2™ mode control. D-CAP2™ mode control combines constant on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component co ...
... The main control loop of the TPS54325 is an adaptive on-time pulse width modulation (PWM) controller that supports a proprietary D-CAP2™ mode control. D-CAP2™ mode control combines constant on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component co ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.