TB6640FTG
... The motor rotation speed is controllable by the PWM input sent through the PWM pin. It is also possible to control the motor rotation speed by sending in the PWM signal through not the PWM pin but the IN1 and IN2 pins. When the motor drive is controlled by the PWM input, the TB6640FTG repeats operat ...
... The motor rotation speed is controllable by the PWM input sent through the PWM pin. It is also possible to control the motor rotation speed by sending in the PWM signal through not the PWM pin but the IN1 and IN2 pins. When the motor drive is controlled by the PWM input, the TB6640FTG repeats operat ...
An introduction to Inverters and Applications
... they have an additional gate terminal that controls the time when the device begins conducting. Provided that the anode voltage is greater than the cathode voltage, a small gate current will allow the device to conduct. The forward voltage drop of a thyristor is between 0.5 V and 2 V. Once conductio ...
... they have an additional gate terminal that controls the time when the device begins conducting. Provided that the anode voltage is greater than the cathode voltage, a small gate current will allow the device to conduct. The forward voltage drop of a thyristor is between 0.5 V and 2 V. Once conductio ...
Glossary of Terms For the Electric Utility Industry
... A stand-alone Photovoltaic system that has no back-up generating source. The system may or may not include storage batteries. Autotransformer – A transformer in which at least two windings have a common section. They are used to either "buck" or "boost" the incoming line voltage. Auxiliary Power – T ...
... A stand-alone Photovoltaic system that has no back-up generating source. The system may or may not include storage batteries. Autotransformer – A transformer in which at least two windings have a common section. They are used to either "buck" or "boost" the incoming line voltage. Auxiliary Power – T ...
Aalborg Universitet Low-Voltage Ride-Through Operation of Power Converters in Grid-Interactive
... only energize the local loads, but also deliver electricity with high reliability and quality to the grid. However, due to the continuously increasing capacity of grid-interactive MGs, these small scale power systems now play a more crucial role than ever before concerning low-voltage ride-through ( ...
... only energize the local loads, but also deliver electricity with high reliability and quality to the grid. However, due to the continuously increasing capacity of grid-interactive MGs, these small scale power systems now play a more crucial role than ever before concerning low-voltage ride-through ( ...
Technical Note: Using an Optimized Transfer Approach
... The amount of time the static switch delays is determined by measuring the phase difference between the sources. For example, if the source phase difference is 180° , the transfer is delayed one half cycle; if the phase difference is 90° , the transfer is delayed ¼ cycle, etc. Note that the point in ...
... The amount of time the static switch delays is determined by measuring the phase difference between the sources. For example, if the source phase difference is 180° , the transfer is delayed one half cycle; if the phase difference is 90° , the transfer is delayed ¼ cycle, etc. Note that the point in ...
Synchronous Voltage Source Inverter Using FCMLI
... A STATCOM is connected at the midpoint of the transmission line. The transmission line discussed in the previous section has been again taken in this case. The PSCAD/EMTDC simulation diagram of a STATCOM connected to transmission line at the midpoint line through a coupling transformer and a smoothi ...
... A STATCOM is connected at the midpoint of the transmission line. The transmission line discussed in the previous section has been again taken in this case. The PSCAD/EMTDC simulation diagram of a STATCOM connected to transmission line at the midpoint line through a coupling transformer and a smoothi ...
Mini Buck Converters for RF Power Amplifiers
... the NCP6360 operates in PFM mode as the inductor drops into DCM (Discontinuous Current Mode). The upper FET on time is kept constant and the switching frequency is variable. Output voltage is regulated by varying the switching frequency which becomes proportional to loading current. As it does in PW ...
... the NCP6360 operates in PFM mode as the inductor drops into DCM (Discontinuous Current Mode). The upper FET on time is kept constant and the switching frequency is variable. Output voltage is regulated by varying the switching frequency which becomes proportional to loading current. As it does in PW ...
LTC4059
... The LTC4059/LTC4059A are linear battery chargers designed primarily for charging single cell lithium-ion batteries. Featuring an internal P-channel power MOSFET, the chargers use a constant-current/constant-voltage charge algorithm with programmable current. Charge current can be programmed up to 90 ...
... The LTC4059/LTC4059A are linear battery chargers designed primarily for charging single cell lithium-ion batteries. Featuring an internal P-channel power MOSFET, the chargers use a constant-current/constant-voltage charge algorithm with programmable current. Charge current can be programmed up to 90 ...
MAX9550, MAX9551, MAX9552 大电流、快速建立时间能够为TFT LCD快速恢复VCOM电压
... To insure buffer stability, place a 1µF low-ESR capacitor as close to the OUT pin as possible. However, this value may be reduced if the TFT-LCD panel load provides some of the capacitance and the resistance in series when this capacitance is low. Connect the feedback at OUT using a Kelvin connectio ...
... To insure buffer stability, place a 1µF low-ESR capacitor as close to the OUT pin as possible. However, this value may be reduced if the TFT-LCD panel load provides some of the capacitance and the resistance in series when this capacitance is low. Connect the feedback at OUT using a Kelvin connectio ...
the tetrode boards
... • Loss or major change in anode, screen or control grid voltage • RF and DC arcs, flashovers and other ‘glitches’ • Blower failure, resulting in overheating of the tube(s). All of these faults will result in too much screen current, either positive or negative. Continuous electronic monitoring of th ...
... • Loss or major change in anode, screen or control grid voltage • RF and DC arcs, flashovers and other ‘glitches’ • Blower failure, resulting in overheating of the tube(s). All of these faults will result in too much screen current, either positive or negative. Continuous electronic monitoring of th ...
PDF
... to the rising cost of traditional energy sources and the environmentalfriendly features of renewable energy. The types of renewable energy include solar, wind, hydrogen, biomass, geothermal, hydropower, and biodiesel. The photovoltaic-based generation has gained importance in DG systems due to its c ...
... to the rising cost of traditional energy sources and the environmentalfriendly features of renewable energy. The types of renewable energy include solar, wind, hydrogen, biomass, geothermal, hydropower, and biodiesel. The photovoltaic-based generation has gained importance in DG systems due to its c ...
Harmonics in power systems
... power conversion from AC to DC, DC to DC, DC to AC and AC to AC; and constitute the largest nonlinear loads connected to the electric power systems. These converters are used for various purposes in the industry, such as adjustable speed (or variable frequency) drives, uninterruptable power supplies ...
... power conversion from AC to DC, DC to DC, DC to AC and AC to AC; and constitute the largest nonlinear loads connected to the electric power systems. These converters are used for various purposes in the industry, such as adjustable speed (or variable frequency) drives, uninterruptable power supplies ...
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 ...
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.