59results about How to "Reduce no-load power consumption" patented technology

The invention provides a multi-mode control method of an active clamp fly-back converter. In the fly-back converter, a controller realizes mode switching among a lagging edge non-complementary mode, aleading edge non-complementary mode and a leading edge non-complementary Burst mode of two driving signals after detecting a feedback voltage and comparing the feedback voltage with a set mode switching threshold voltage. According to the invention, the lagging edge non-complementary mode is adopted to reduce the circulating current of the converter, the leading edge non-complementary mode is adopted instead of a common fly-back mode to improve the light-load efficiency, and the leading edge non-complementary burst mode is adopted under the condition of no load in order to limit the magnitudeof the primary peak current in the burst mode, avoid audio noise and achieve low no-load power consumption.

The invention discloses a regulation method and device. The regulation method includes: acquiring M current performance data from M servers in a cabinet, wherein each current performance datum in the M current performance data at least includes current utilization information in main controller performance data of the main controller of the M servers, and M is an integer greater than or equal to 1; determining at least one adjustment parameter used for adjusting air supply equipment according to the M current performance data; according to the at least one adjustment parameter, controlling current air supplying mode of the air supply equipment so as to enable the current air supplying mode to be matched with M current utilization of the M main controllers.

The invention particularly relates to a control circuit and a control method of a flyback active clamp and an asymmetrical half-bridge switching converter. As far as the circuit solution is concerned, the present invention provides a flyback control circuit, including an integrated control circuit for controlling the switch tube and the clamp tube, and the integrated control circuit includes a drive unit for the switch tube, a drive unit for the clamp tube, and an off-hold drive When the unit is light-loaded or no-loaded, the sum of the turn-on time of the switch tube, the turn-on time of the clamp tube and the dead time between them forms a single cycle, and the duration of the single cycle is a fixed value. The turn-on time of the switch tube It has a complementary relationship with the turn-on time of the clamp tube in a single cycle; the time of a single cycle and the time of keeping it off constitute the total working cycle. Compared with the prior art, the present invention improves light-load efficiency and reduces no-load power consumption under the condition of ensuring the efficiency and EMI advantages of traditional circuits under light-load and above loads.

The invention relates to the field of switching converters, in particular to a control circuit and a control method of a flyback active clamp switching converter. The invention provides an active clamping flyback circuit capable of realizing frequency reduction and ZVS. The flyback circuit includes a main power loop, a clamping loop, and an output rectifying and filtering loop. The main power circuit is formed by connecting a transformer and a main switching tube, the clamping circuit is formed by connecting a clamping switch tube, a clamping capacitor and a clamping diode, and the output rectifying and filtering module is composed of an output rectifying diode connected to the output capacitor. Compared with the prior art, the present invention can achieve frequency reduction under light load, and the control scheme is flexible; and the loss of the transformer winding and the internal resistance of the switch tube caused by the switching loss and the effective value of the current under no-load are very small, which greatly improves the Reduced no-load power consumption and improved light-load efficiency.

The invention discloses a split scraper assembly and conveying equipment. The split scraper assembly includes: an upper scraper body, a lower scraper body, and a connection connecting the upper scraper body and the lower scraper body parts; wherein, the upper end located in front of the head of the upper scraper body is a hollow structure; the lower end located in front of the head of the lower scraper body is a hollow structure. Therefore, the split scraper assembly and conveying equipment of the present invention can reduce no-load energy consumption and improve production efficiency.

The invention relates to a biconical high consistency refiner which comprises a machine frame, a main shaft, a refining chamber base, the middle portion of a refining chamber, and a refining chamber cover, wherein a bearing seat is horizontally and fixedly installed on the machine frame, the refining chamber cover, the middle portion of the refining chamber, and the refining chamber base are formed coaxially, the closed refining chamber is defined by the refining chamber cover, the middle portion of the refining chamber, and the refining chamber base, a biconical stator is fixedly installed on the main shaft arranged inside the middle portion of the refining chamber coaxially, a biconical rotor is installed in an inner gap of the biconical stator, and three refiner areas, namely two conical refiner areas arranged in a mirror symmetry mode and a cylindrical refiner area connected in the middle, are formed by the biconical rotor and the biconical stator. The refining chamber cover and the middle portion of the refining chamber can be opened in the radial direction by means of a mechanical arm and a hinge with the refining chamber base as the basis, so that refining chamber maintenance and adhesive disc replacement are facilitated. Under the condition that the effective refining area stays the same, the no-load power consumption of the biconical high consistency refiner is much lower than that of a single-tray high consistency refiner and a three-tray high consistency refiner. Under the condition that the axial length stays the same, the radial size and no-load power consumption of the biconical high consistency refiner are smaller than those of a conical high consistency refiner.