11 results about "Stepping switch" patented technology

System (200) for operating a load tap changer, wherein the system comprises: a plurality of strands (208, 210), at least one of which is caused to switch from a first tap (202) to a second tap (204) of the load tap changer upon receipt of a tap change signal, each strand having at least one mechanical switch (214, 216) and wherein an electrical connection is established between the first tap (202) or the second tap (204) and a supply terminal (212) of the load tap changer when at least one mechanical switch (214, 216) of at least one of the plurality of strands is opened; and a plurality of semiconductor switches (220, 222, 224, 226), wherein each semiconductor switch (220, 222, 224, 226) is arranged in parallel to the mechanical switches (214, 216) and, in the activated state, provides an electrical connection between the first tap (202) or the second tap (204) and a supply terminal (212) of the load tap changer; and a processing unit (228) configured to selectively activate and deactivate the mechanical switches (214, 216) and the semiconductor switches (220, 222, 224, 226) such that the electrical connection between the at least one tap (202, 204) and the supply terminal (212) is maintained during the transition of the at least one strand (208, 210) from the first tap (202) to the second tap (204) without causing a short circuit between the two taps (202, 204). the processing unit (228) is also configured to: Generating the step switching signal to move at least one strand (208, 210) from the first tap (202) to the second tap (204) when a condition for step switching is met; Generating activation signals for the semiconductor switches (220, 222, 224, 226) when the stage switching signal is generated; and Generating a plurality of deactivation signals for the mechanical switches (214, 216) from at least one strand (208, 210) connected to the first tap (202) when a stage switching condition is met.

Resistor arrangement (10) for a tap changer (1) for uninterrupted switching between winding taps of a transformer, the resistor arrangement (10) comprising at least one resistive element (20) which is held by at least two resistive holders (30), characterized by: - a base plate (11) with at least one opening (12) on which the at least two resistance holders (30) for receiving the resistance element (20) are arranged; - a guide (31) formed in each resistance holder (30), wherein each guide (31) positions a first end (201) or a second end (202) of the resistance element (20) with respect to a longitudinal direction (L) between the two resistance holders (30), and wherein the resistance element (20) can be inserted through the opening (12) into each of the guides (31); and - two contact points (24) of the resistance element (20) which, when a resistance element (20) is inserted into the resistance holder (30), can be electrically contacted by a respective contact (40) of the tap changer (1).

A circuit interrupter includes an inductor module connected in series with a hybrid interrupter switch between a power source and a load. The inductor module includes a coupled inductor including a primary winding connected in series between the power source and the interrupter module, and a secondary winding connected to the power source on its line side. The load side of the secondary winding is connected to a first stage switching device that forms a switch between the secondary winding and the interrupter module. In normal current conditions, the first stage switching device and the hybrid interrupter switch remain closed. During a fault, the first stage switching device is first opened, which significantly increases the magnetic flux in the inductor module and the impedance of the circuit, and thus reduces the current through the interrupter module. The hybrid switch is then turned on to complete the interruption.

Remote-controlled lighting system (100), characterized in that it comprises a remote control (11), at least one lighting device (12) and a control unit (13) provided for each lighting device (12); wherein the control unit (13) comprises a main control unit (131), a DIP switch assembly (132) connected to the main control unit (131) and a wireless communication unit (133), wherein the DIP switch assembly (132) comprises several tap switches and is configured to establish a unique identification identifier for the corresponding lighting device (12);wherein the remote control (11) is wirelessly connected to the wireless communication unit (133), wherein the remote control (11) is provided with setting buttons (111) and several step selection buttons (112), the number of which corresponds to the number of step switches, wherein each step selection button (112) is configured to send a target step remote control command to the main control unit (131) which contains a corresponding button identifier, wherein the main control unit (131), if the button identifier in the target step remote control command received by the main control unit (131) matches the current identity identifier of the corresponding lighting device (12), responds to a setting command of the setting buttons (111) in order to control the corresponding lighting device (12) to perform a corresponding lighting operation, and otherwise does not respond to the setting command of the setting buttons (111).

The invention relates to the technical field of power systems and automation thereof, in particular to a flexible direct current averaging modeling method considering negative sequence control and an amplitude limiting link, which comprises the following steps of: S1, decomposing a periodic time-varying state quantity of an MMC into a differential mode component and a common mode component through multi-frequency coordinate transformation, and establishing a steady double-loop state-space equation; s2, for the negative sequence control system containing the DDSRF-PLL, realizing voltage / current positive and negative sequence separation through a dynamic equation; and S3, carrying out continuity on the step switch characteristics of the amplitude limiting link through a continuity approximation tool. By constructing an averaging state space model containing negative sequence control and amplitude limiting links, the problems that MMC-HVDC modeling calculation is complex and dynamic precision is insufficient are solved.

The application provides an asymmetric multi-step switching push non-destructive peeling method for a flexible ultrathin chip, and relates to the technical field of flexible electronics. The method comprises the following steps: obtaining the length of a substrate and the length of a chip, and determining the switching step number of a push pin; determining the relationship between a peeling health index and a crack propagation length according to the elastic modulus of the chip and the thickness of the chip, and determining the switching position corresponding to each switching step number of the push pin; determining the displacement of the push pin according to the switching position; controlling the push pin to push the chip according to the displacement of the push pin until the peeling of the chip is completed after the push is performed at all the switching positions. According to the application, the push position can be selected in a systematic and quantitative manner, the performance is close to the theoretical optimum, the operation steps are clear, the requirements for the equipment are reasonable, the integration and automation can be realized on the existing wafer-level packaging equipment, the stress state of the chip in the peeling process can be effectively managed, and the non-destructive and high-yield peeling of the ultrathin chip can be realized.

Switching converter driver operable in: a first mode in which a first and a second output step switch are controlled to generate a binary output signal, wherein an impedance of the first output step switch is substantially the same as the impedance of the second output step switch; and a second mode in which the first and second output step switches and a third switch are controlled to generate a three-step output signal, wherein an impedance of the third switch is substantially greater than an impedance of the first output step switch and the second output step switch.

This invention proposes a method, system, electronic device, and storage medium for switching power supply steps on a production line. The method includes: receiving a process flow data packet containing multiple sets of step parameters for each step, including step status, current setpoint, and step switching parameters; during the execution of the current step, real-time acquisition of the current step's operating parameters, and determining whether to trigger a step switch based on the operating parameters and the corresponding step switching parameters; acquiring the step parameter set for the next step, and comparing the step status of the next step with that of the current step; if the step statuses are the same, maintaining an enable signal in a valid state when triggering a step switch, and directly jumping the power supply's output current from the current setpoint of the current step to the current setpoint of the next step before executing the next step. This invention can significantly shorten step transition time, prevent voltage rebound from affecting DCIR values, and improve test accuracy.