droop

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droop

The deviation from a preset value of a controlled liquid level, temperature, variable pressure, or differential pressure (at minimum controllable flow) when the flow through a regulator is gradually increased from its minimum controllable flow to its rated capacity.

droop

droop
droop
i. A downward curvature of the leading edge of an airfoil to provide increased camber.
ii. A progressive decrease in RPM that occurs when a fuel control flyweight governor spring is extended and made weaker. It takes less flyweight force to come to an equilibrium with the weaker spring force and consequently a lower RPM will result.
iii. The inability of the engine power to increase as the rotor pitch is increased, causing the rotor to slow down.
References in periodicals archive ?
Even though there has been an increase in housing in Deadhorse over the last few years, Droop says CH2M wanted something suited for their employees and future capacity for the long run.
Droop says CH2M selected Winchester because the firm designed many camps recently built on the North Slope and was present for the commissioning when those camps came on line.
"We're using the circle in the carpeting, windows, and maybe the art," Droop says.
We definitely wanted our camp fully sprinklered," Droop says.
Grundmann, "Droop in InGaN light-emitting diodes: a differential carrier lifetime analysis," Applied Physics Letters, vol.
Chiang et al., "Efficiency and droop improvement in hybrid warm white LEDs using InGaN and AlGaInP high-voltage LEDs," IEEE/OSA Journal of Display Technology, vol.
Lee et al., "Efficiency and droop improvement in GaN-based high-voltage light-emitting diodes," IEEE Electron Device Letters, vol.
Conventional HV-LED (ref-1) HV-LED with ODR (ref-2) HVFC-LED (versus ref-1) HVFC-LED (versus ref-2) Peak efficiency 46.9% 59.9% 62.0% Efficiency @ 1 watt 31.8% 40.8% 44.0% Efficiency @ 3 watt 21.1% 26.5% 29.3% [eta] @1 watt 32.2% 31.6% 29.0% [eta] @3 watt 55.0% 55.8% 52.7% Droop improve @ 1 watt 9.9% 9.2% Droop improve @ 3 watt 4.2% 5.6%
Therefore, the load current sharing is achieved based on the droop method.
The proposed method ensures synchronization in the output voltage level by adjusting the reference voltage according to the droop method.
As indicated in Figure 9, [V.sub.NL] is the no-load voltage, [V.sub.ref] is the reference voltage (rated operation voltage), [DELTA][V.sub.operation] is the range of voltage that would allow the algorithm to adjust the reference voltage, and K is the droop gain of one of the converters.
However, if the absolute [DELTA]V is less than or equal to [DELTA][V.sub.operation], the output current for the chosen converter is compared with the droop current ([I.sub.droop]).