Aalborg Universitet Modulation Scheme for Harmonic Reduction
... when the rectified currents (e.g., iscr and idr in Fig. 1) are controlled as dc currents at the same level through dc-dc converters (e.g., a boost converter), the total grid current becomes multi-level. As a consequence, an even better THD of the grid currents is achieved. However, the effectiveness ...
... when the rectified currents (e.g., iscr and idr in Fig. 1) are controlled as dc currents at the same level through dc-dc converters (e.g., a boost converter), the total grid current becomes multi-level. As a consequence, an even better THD of the grid currents is achieved. However, the effectiveness ...
IEEE Transactions on Magnetics
... [1]. The soft-switching technique is a choice for a highpower converter to work under higher switching frequency with lower switching loss and lower EMI noise. In the past few years, there have been many studies on soft switching techniques for a three-phase converter. And they can generally be divi ...
... [1]. The soft-switching technique is a choice for a highpower converter to work under higher switching frequency with lower switching loss and lower EMI noise. In the past few years, there have been many studies on soft switching techniques for a three-phase converter. And they can generally be divi ...
1N5820 - Instructables
... Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use o ...
... Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use o ...
The source of X-rays and high-charged ions based on moderate
... the X-ray pulses were recorded by the digital oscilloscope Lecroy ‘WaveAce2024’ (Fig. 6). It appears that moment of initiation of the discharge current oscillations correlated with the time when X-ray radiation was emitted. The discharge current shows damped oscillatory as the plasma was being devel ...
... the X-ray pulses were recorded by the digital oscilloscope Lecroy ‘WaveAce2024’ (Fig. 6). It appears that moment of initiation of the discharge current oscillations correlated with the time when X-ray radiation was emitted. The discharge current shows damped oscillatory as the plasma was being devel ...
2 Tap Changer Types
... Different test setups have also been evaluated including the new technique where current measurement is combined with voltage measurements on both primary and secondary side of the transformer. ...
... Different test setups have also been evaluated including the new technique where current measurement is combined with voltage measurements on both primary and secondary side of the transformer. ...
A Three Phase Five Level Inverter Based STATCOM using Modular
... Power quality and efficiency issues arising from unmanaged power flow, which include low power factor (PF), voltage collapse, unbalance, excessive harmonics, transients and oscillations, have been a major concern in power transmission and distribution systems. Reactive loads, which naturally possess ...
... Power quality and efficiency issues arising from unmanaged power flow, which include low power factor (PF), voltage collapse, unbalance, excessive harmonics, transients and oscillations, have been a major concern in power transmission and distribution systems. Reactive loads, which naturally possess ...
Design and Simulation of Cascaded H
... and unusual faults could also inflict power quality (PQ) problems. PQ problem is defined as any manifested problem in voltage I current or leading to frequency deviations that result in failure or mal operation of customer equipment. Voltage sags and swells are among the many PQ problems the industr ...
... and unusual faults could also inflict power quality (PQ) problems. PQ problem is defined as any manifested problem in voltage I current or leading to frequency deviations that result in failure or mal operation of customer equipment. Voltage sags and swells are among the many PQ problems the industr ...
reotron mew 700
... burst-fire mode. Phase-angle mode the unit works as a regulator for RMS current, RMS voltage or power. Adjustment is variable. External setpoint signals can be used for controlling current, voltage and power or potentiometers may be used instead. A serial RS232, PROFIBUS-DP field bus interface can b ...
... burst-fire mode. Phase-angle mode the unit works as a regulator for RMS current, RMS voltage or power. Adjustment is variable. External setpoint signals can be used for controlling current, voltage and power or potentiometers may be used instead. A serial RS232, PROFIBUS-DP field bus interface can b ...
PDF
... electrical energy is from wall plugs. However, for driving LEDs DC supply is required, so a conversion stage from AC to DC is necessary. Among the AC to DC driving circuits for LEDs, switching converter is one of the most popular and economical driving solutions. Conventional ac-to-dc switching conv ...
... electrical energy is from wall plugs. However, for driving LEDs DC supply is required, so a conversion stage from AC to DC is necessary. Among the AC to DC driving circuits for LEDs, switching converter is one of the most popular and economical driving solutions. Conventional ac-to-dc switching conv ...
G:\Power Management\7937\HT7937v150-20160625.vp
... With an open circuit output, such as when no LEDs are connected, the FB pin will be pulled down to ground via the sense resistor RFB. As the device will now react by trying to increase the output voltage by generating a maximum duty cycle signal, this may cause the SW pin to exceed its maximum rated ...
... With an open circuit output, such as when no LEDs are connected, the FB pin will be pulled down to ground via the sense resistor RFB. As the device will now react by trying to increase the output voltage by generating a maximum duty cycle signal, this may cause the SW pin to exceed its maximum rated ...
Zener Diode
... The electric field may become large enough for the covalent bond to break, causing electron-hole pairs to be created. So, electrons from p-type are swept to n-region by the electric field and holes from the n-type are swept to the p-region The movement will create reverse biased current known as the ...
... The electric field may become large enough for the covalent bond to break, causing electron-hole pairs to be created. So, electrons from p-type are swept to n-region by the electric field and holes from the n-type are swept to the p-region The movement will create reverse biased current known as the ...
Optimizing Resistor Dividers at a Comparator
... Sense inputs and Power Fail Inputs (PFI) on supply voltage supervisors (SVS) or low battery inputs (LBI) on switching regulator devices. The threshold voltage is set by the ratio of the two resistors in the divider. Keeping the ratio constant, there are tradeoffs to consider for selecting the actual ...
... Sense inputs and Power Fail Inputs (PFI) on supply voltage supervisors (SVS) or low battery inputs (LBI) on switching regulator devices. The threshold voltage is set by the ratio of the two resistors in the divider. Keeping the ratio constant, there are tradeoffs to consider for selecting the actual ...
O044057984
... In this paper, a new TL LLC SRC for highand wide-input voltage applications is introduced, and its analysis results under wide input voltage are presented. In high-input-voltage applications such as three-phase systems, fuel cell systems, photovoltaic systems, and ship electric power distribution sy ...
... In this paper, a new TL LLC SRC for highand wide-input voltage applications is introduced, and its analysis results under wide input voltage are presented. In high-input-voltage applications such as three-phase systems, fuel cell systems, photovoltaic systems, and ship electric power distribution sy ...
Constant Voltage / Constant Current Secondary
... ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any partic ...
... ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any partic ...
Power electronic interface developed to manage power flows and
... Abstract. This paper presents a power management system developed to operate on the dc side of a SAPC allowing this type of active filter to operate in smart grid applications and integrating some type of energy storage system. The power management system consists of a bidirectional dc-dc converter ...
... Abstract. This paper presents a power management system developed to operate on the dc side of a SAPC allowing this type of active filter to operate in smart grid applications and integrating some type of energy storage system. The power management system consists of a bidirectional dc-dc converter ...
Application of Indicating Lights
... so if lamp failure is only a nuisance and is not critical to the operation. Application experience has shown that an initial low price should usually not be a primary consideration in selecting lamp types because of the high cost of frequent replacements due to voltage spikes on AC lines. ...
... so if lamp failure is only a nuisance and is not critical to the operation. Application experience has shown that an initial low price should usually not be a primary consideration in selecting lamp types because of the high cost of frequent replacements due to voltage spikes on AC lines. ...
Appendix F - Testing Results of Electrical Components
... the duration of the valve control pulse. The valve required a signal of minimum 1ms duration to turn on. At the same time, the rated value for the duration of the pulse was 2 s. In order to ensure that no pulse longer than 2 s was used, an RC filter was used in conjunction with a MOSFET driver to gr ...
... the duration of the valve control pulse. The valve required a signal of minimum 1ms duration to turn on. At the same time, the rated value for the duration of the pulse was 2 s. In order to ensure that no pulse longer than 2 s was used, an RC filter was used in conjunction with a MOSFET driver to gr ...
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.