6 results about "Phase balance" patented technology

The application discloses a design method based on intelligent lighting control three-phase voltage balance, relates to the technical field of hydroelectric and hydraulic engineering, and comprises the following steps: arranging lamps and lanterns; distributing lamp power supply circuits; three single-phase circuits L1, L2 and L3 are arranged in each lighting box, corresponding to 6 columns of lamps and lanterns, 9 columns form a cycle, and the arrangement sequence is L1, L2, L3, L2, L1, L1, L3, L3 and L2; a switch driver is arranged at the lower opening of a micro circuit breaker corresponding to each power supply circuit in the lighting box, each power supply circuit is divided into two groups, and lighting control is performed. The method that the spatial arrangement of the lamps and lanterns, the uniform distribution of the lighting power supply network and the flexible combination of the power supply circuits are connected in a matrix in three-dimensional space not only realizes intelligent management of lighting equipment of a hydropower station underground main plant, but also realizes three-phase balance of lighting circuit power, maintains voltage stability, and prolongs the service life of electrical equipment of the lighting system.

The invention provides a phase balance control method and device applied to an interference type optical fiber seismograph, the interference type optical fiber seismograph and a storage medium, and relates to the seismograph technology. The method comprises the following steps: acquiring phase error information of an interference signal; the phase error information is a difference value between interference signal phase disturbance caused by ground vibration and a target phase; a self-adaptive phase balance feedback technology is introduced into the seismic interferometer, and the phase error information is dynamically adjusted by using the self-adaptive phase balance feedback technology to obtain a control quantity; the adaptive phase balance feedback technology is a fuzzy control mechanism for adjusting the control quantity based on the phase error information; and driving piezoelectric ceramics on a reference arm according to the control quantity so as to control the phase of the interference signal and realize phase balance control. According to the invention, the problem that an optical fiber seismograph is not accurate enough to perceive seismic signals in the prior art is solved.

The invention relates to the technical field of illumination control, and discloses a phase-switching LED module three-phase power balancing device and system, and the device comprises a man-machine interaction module, a communication module, a regulation and control module, a three-phase balancing module, and a plurality of LED modules. The man-machine interaction module responds to a module power input instruction and outputs a phase switching signal to the communication module so as to output working phase and power to the communication module, the communication module receives the phase switching signal and changes high and low levels of a pin, on-off of a switching unit in the three-phase balance module is controlled through the regulation and control module, and the working phase and power of the three-phase balance module are controlled. The switching of the LED module in the three-phase input line is realized, that is, the access phase of the three-phase power supply is switched, and the power of the LED module group on the three-phase input line is averaged after the LED module group is electrified, so that the three-phase balance is realized. The technical blank of tail end load dynamic balance in an LED high-power application scene is filled, and the safety boundary and the energy utilization rate of the system are remarkably improved.

The application belongs to the technical field of mixed substrate wiring and relates to a phase balance control method for high-speed line layout, which comprises the following steps: acquiring the fiber weaving pitch and fiber cloth trend of a printed circuit board, determining the cumulative phase skew of a differential pair, setting a phase compensation interval defined by a physical starting coordinate and a physical ending coordinate, locking the physical starting coordinate and the physical ending coordinate on the central axis of a fiber bundle or a resin-rich area inside the base material, adjusting the trace center distance in the phase compensation interval to compensate for the phase skew, and synchronously and reversely adjusting the single-end line width. Through the spatial alignment of the wiring topology and the non-homogeneous substrate surface layer period and the coupling regulation of the geometric parameters, the application eliminates the impedance fluctuation caused by the phase repair and avoids high-frequency dispersion and mode conversion.

The invention discloses a three-phase load balancing control system, and the system comprises a data collection module which comprises a current sensor, a voltage sensor, and a power sensor; the PLC control module calculates the three-phase current unbalance degree, sends a phase switching instruction to the power supply phase switching module for the three-phase current unbalance degree larger than or equal to a first three-phase balance threshold value, does not send the phase switching instruction for the three-phase current unbalance degree smaller than or equal to a second three-phase balance threshold value, and does not send the phase switching instruction for the three-phase current unbalance degree between the two threshold values if the three-phase current unbalance degree in the follow-up period is predicted to be reduced. If yes, the phase switching instruction is not sent currently, and otherwise, the phase switching instruction is sent; and after the power supply phase switching module receives the phase switching instruction, the thyristor conduction angle of the overload phase is reduced, and the thyristor conduction angle of the light load phase is increased until the three-phase load is balanced. According to the invention, by setting the double thresholds, unnecessary frequent adjustment on the micro fluctuation of the three-phase current is avoided, and frequent change of the conduction angle of the thyristor is reduced.