Three-Level Inverter-Based Shunt Active Power Filter in Three
... Abstract—This paper presents a direct current-space-vector control of an active power filter (APF) based on a three-level neutral-point-clamped (NPC) voltage-source inverter. The proposed method indirectly generates the compensation current reference by using an equivalent conductance of the fundame ...
... Abstract—This paper presents a direct current-space-vector control of an active power filter (APF) based on a three-level neutral-point-clamped (NPC) voltage-source inverter. The proposed method indirectly generates the compensation current reference by using an equivalent conductance of the fundame ...
Current measurement with auto-ranging yields 180dB range dynamics
... When looking at the concrete dimensioning of the design, the dilemma to be solved becomes clear: the size of the sensor resistor (shunt) is the crucial parameter in circuit design. It must be large enough to supply significant voltage signals that aren't drowned out by noise and disturbance. On the ...
... When looking at the concrete dimensioning of the design, the dilemma to be solved becomes clear: the size of the sensor resistor (shunt) is the crucial parameter in circuit design. It must be large enough to supply significant voltage signals that aren't drowned out by noise and disturbance. On the ...
EE6611-Power Electronics and Drives Laboratory
... Girls should put their plait inside their overcoat Boys students should tuck in their uniform to avoid the loose cloth getting into contact with rotating machines. Acquire a good knowledge of the surrounding of your worktable. Know where the various live points are situated in your table. In ...
... Girls should put their plait inside their overcoat Boys students should tuck in their uniform to avoid the loose cloth getting into contact with rotating machines. Acquire a good knowledge of the surrounding of your worktable. Know where the various live points are situated in your table. In ...
SWITCHGEAR PROTECTION
... A contactor is a device for opening or closing a circuit under load conditions by pushbutton control. The operation is usually electromagnetic, but it may be electro pneumatic. The contactor is ideal for remote and automatic control and is made use of in many appliances and, in particular, in many t ...
... A contactor is a device for opening or closing a circuit under load conditions by pushbutton control. The operation is usually electromagnetic, but it may be electro pneumatic. The contactor is ideal for remote and automatic control and is made use of in many appliances and, in particular, in many t ...
NCT3941S/S-A
... To achieve the best results when using the NCT3941S/S-A, decouple the power supply with a 2.2uF capacitor. Use a high quality ceramic surface mount capacitor if possible. Surface mount components minimize lead inductance, which improves performance, and ceramic capacitors tend to have adequate high ...
... To achieve the best results when using the NCT3941S/S-A, decouple the power supply with a 2.2uF capacitor. Use a high quality ceramic surface mount capacitor if possible. Surface mount components minimize lead inductance, which improves performance, and ceramic capacitors tend to have adequate high ...
Development of a Bipolar Cell for Lithium Production
... The cells share a common amalgam electrode. This bipolar electrodeprovides both thermal and chemical isolation of the molten salt and the aqueous electrolytes. The thermal isolation is effected by a counter current exchange of heat between amalgam streams entering and leaving the high temperature ce ...
... The cells share a common amalgam electrode. This bipolar electrodeprovides both thermal and chemical isolation of the molten salt and the aqueous electrolytes. The thermal isolation is effected by a counter current exchange of heat between amalgam streams entering and leaving the high temperature ce ...
Applications of Diodes Word Document
... Protecting Devices from switch off voltages In topic 1.7 we introduced the idea that npn transistors, MOSFET’s and thyristors can be used to switch on high powered output devices namely motors and solenoids. There is one issue that we did not mention in the last topic which is that these high powere ...
... Protecting Devices from switch off voltages In topic 1.7 we introduced the idea that npn transistors, MOSFET’s and thyristors can be used to switch on high powered output devices namely motors and solenoids. There is one issue that we did not mention in the last topic which is that these high powere ...
Practical Considerations in Current Mode Power
... ground will correct both situations. Connected with the anode to ground and cathode to the output, it will prevent the output voltage from going excessively below ground, and will also provide a current path. To be effective, the diode selected should have a forward voltage drop of less than 0.3 vol ...
... ground will correct both situations. Connected with the anode to ground and cathode to the output, it will prevent the output voltage from going excessively below ground, and will also provide a current path. To be effective, the diode selected should have a forward voltage drop of less than 0.3 vol ...
2014 RA420 PEMC2014 135-Ozsoy
... turbines are very advantageous compared to other generator types due to variable speed operation, reduced inverter cost, and four-quadrant active and reactive power flow capability. There are several studies associated with DFIG control for wind energy conversion systems. Conventional grid connected ...
... turbines are very advantageous compared to other generator types due to variable speed operation, reduced inverter cost, and four-quadrant active and reactive power flow capability. There are several studies associated with DFIG control for wind energy conversion systems. Conventional grid connected ...
A Method to Enhance Ground
... line-to-ground (DLG), and three-phase short-circuit (3SC). Among these types of faults, the SLG occurs most often while the 3SC is commonly deemed the most severe one with largest magnitude of fault current, significantly influencing the decision on the equipments and protective relays setting for p ...
... line-to-ground (DLG), and three-phase short-circuit (3SC). Among these types of faults, the SLG occurs most often while the 3SC is commonly deemed the most severe one with largest magnitude of fault current, significantly influencing the decision on the equipments and protective relays setting for p ...
Selecting a Littelfuse Varistor
... capability is of concern for a suppressor if transients will be occurring in rapid succession. Under this condition, the power dissipation required is simply the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown on t ...
... capability is of concern for a suppressor if transients will be occurring in rapid succession. Under this condition, the power dissipation required is simply the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown on t ...
Earth Ground Resistance Measurement
... A Rogowski current probe is placed around one leg of the pylon. The polarity of the probe is important. The current probe has an arrow indicating the direction of current flow; point the arrow down towards the ground. It is advisable to coil the probe around the leg up to four times for greater sens ...
... A Rogowski current probe is placed around one leg of the pylon. The polarity of the probe is important. The current probe has an arrow indicating the direction of current flow; point the arrow down towards the ground. It is advisable to coil the probe around the leg up to four times for greater sens ...
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.