11 results about "Reluctance motor" patented technology

This invention discloses a direct control method for torque and axial force of a linear rotary switched reluctance motor. First, the sector containing the flux linkage vector is determined through calculation. Based on the flux linkage hysteresis signal and the torque hysteresis signal, the voltage vector required for control is determined. Then, the axial force is controlled within the control range of (-15°, 15°) where the rotor position is selected. The corresponding axial force voltage vector is selected based on the axial force hysteresis signal. Finally, the operating mode of each power converter switch is determined based on the signs of all voltage vectors. This invention significantly reduces torque and axial force pulsation by directly controlling the motor's torque and axial force, resulting in a faster system response. Operating modes for the torque winding and axial force winding are established separately for torque and axial force, respectively, leading to more reasonable vector selection. Furthermore, no model calculation is performed during the control process, so the control accuracy does not depend on the analytical model, improving the system response speed and simplifying the control strategy.

This invention provides an integrated vector reluctance motor drive and control device for ship hatch covers, relating to the field of motor technology. It includes a motor body, a reducer, an electromagnetic brake, a controller, and a rear cover. By installing a reducer and an electromagnetic brake at both ends of the motor body, and then enclosing the electromagnetic brake inside the rear cover, and integrating the controller within the rear cover, the integrated structure formed by the motor body, reducer, electromagnetic brake, controller, and rear cover is more compact. Furthermore, the reducer exhibits better sealing at both ends, preventing poor contact and corrosion problems caused by marine salt spray environments when applied to ship hatches.

This invention relates to the field of motor drive and control, and provides a deadbeat predictive current control method and system for a DC biased vernier reluctance motor. The method includes: acquiring the operating data of the target motor and preprocessing the acquired operating data; inputting the preprocessed operating data into an extended state observer with coupling compensation, and outputting extended state prediction parameters; inputting the extended state prediction parameters into a deadbeat predictive current control model to obtain the regulating voltage of the dq0 axis; performing coordinate transformation on the regulating voltage of the dq0 axis and performing space vector pulse width modulation to obtain a dual-inverter SVPWM modulated switching sequence; and applying the switching sequence to the phase windings of the target motor. This invention considers voltage coupling-induced disturbances during the prediction of current and disturbances; this allows for compensation of voltage coupling interference, thereby mitigating the impact of interference caused by parameter changes and coupling voltage, and enhancing dynamic response capability.

The application provides an asynchronous starting reluctance motor rotor and an asynchronous starting reluctance motor, wherein the asynchronous starting reluctance motor rotor comprises a core body, an outer peripheral edge region of the core body is provided with a squirrel cage structure, a shaft hole is arranged on a middle region of the core body, a plurality of air magnetic separation grooves are symmetrically arranged about the center of the shaft hole and are spaced along the q-axis of the rotor, and a plurality of support holes penetrating through both ends of the core body are further arranged on the middle region of the core body, and a support magnetic separation strip is inserted into each of the support holes. According to the application, a plurality of support magnetic separation strips are arranged on the middle region of the core body, so that the anti-deformation ability of the corresponding part is improved, the core body can withstand the radial impact force generated in the operation process of the rotor, the quality of the rotor is improved, and the motor failure rate caused by the deformation of the core is reduced.

This utility model relates to the field of motor technology, specifically a reluctance motor, comprising an upper housing, a base housing, a lower housing, a stator assembly, and a rotor assembly. The upper and lower housings are respectively disposed at both ends of the base housing, which has a mounting cavity. The stator assembly is disposed within the mounting cavity. The rotor assembly includes a rotating shaft and a magnetic ring element, with the magnetic ring element mounted on the rotating shaft. The two ends of the rotating shaft are connected to and pass through the upper and / or lower housings, respectively. The stator assembly includes stator arms and stator windings. Multiple stator arms are provided, each with a winding support and winding slots. The stator windings are wound on the winding slots. This utility model ensures stable rotor rotation within the motor and guarantees a reasonable magnetic circuit distribution between the magnetic ring element and the stator assembly, contributing to improved torque output and operating performance of the motor.

This invention proposes a sensorless control method and system for a synchronous reluctance motor, belonging to the technical field of reluctance motors. The method includes: forming an injection sequence using two high-frequency square wave voltage signals with opposite phases; obtaining a remainder by performing a modulo operation on a pseudo-random number with respect to a set value, determining the parity of the remainder, and selecting one phase signal to inject into the synchronous reluctance motor based on the parity determination result; verifying the magnitude of the remainder, and injecting a high-frequency voltage signal based on the magnitude verification result; when a high-frequency voltage signal is injected at a given moment, estimating the rotor position signal at that control moment based on a sampled high-frequency current signal; when no high-frequency voltage signal is injected at that moment, estimating the rotor position signal based on the previous moment, thus achieving sensorless control of the synchronous reluctance motor. This invention improves current quality and significantly suppresses high-frequency torque fluctuations and electromagnetic vibrations.

This utility model provides an assembled rotor structure for converting a three-phase asynchronous motor into a reluctance motor, belonging to the field of motor retrofitting technology. It includes multiple stacked rotor laminations, each with shaft holes, multiple magnet holes, and multiple fixing holes, as well as two fixing washers. The rotor laminations include a head lamination, multiple middle laminations, and a tail lamination. The middle laminations have positioning grooves and positioning flanges, and the fixing holes are arranged around the shaft holes, with the positioning flanges also arranged around the fixing holes. The head laminations have positioning flanges, and the tail laminations have positioning grooves. The fixing washers have through holes, and the two fixing washers are respectively fitted onto the front end face of the head lamination and the rear end face of the tail lamination. This assembled rotor structure for converting a three-phase asynchronous motor into a reluctance motor improves the motor's efficiency and torque output capability, ensuring good and stable motor performance.

The application provides a reluctance motor and a reluctance motor for driving a compressor, comprising a shell; a stator and a rotor are arranged in the shell, and a rotating shaft is fixed in the middle of the rotor; a cooling cavity is arranged in the shell wall, and the cooling cavity is used for cooling liquid flow; heat dissipation mechanisms are fixed on both sides of the rotor, a liquid delivery part is arranged on one side of the heat dissipation mechanism, the liquid delivery part extends into the cooling cavity; a plurality of liquid brushing rings are arranged on the outer wall of the shell, the liquid brushing rings are connected with liquid injection mechanisms, and the liquid brushing rings are connected with a pushing mechanism through connecting rods. By arranging the heat dissipation mechanisms on both sides of the rotor and connecting the heat dissipation mechanisms with the liquid delivery part, when the motor operates, the liquid delivery part can automatically extract the cooling liquid in the cooling cavity and input the cooling liquid into the heat dissipation mechanism, the cooling liquid flows in the heat conduction pipes of the heat dissipation mechanism, can quickly absorb the heat transferred to the heat conduction disc by the rotor, and then carries the heat back into the cooling cavity, forming a circulating loop for heat dissipation of the rotor, effectively solving the problems that the heat of the rotor of the traditional reluctance motor is difficult to dissipate and is easy to accumulate.

This invention discloses a reluctance motor with adjustable rotor-stator gap, comprising: a base housing; a stator, the stator including a stator body and a winding assembly, the stator body being disposed on the inner wall of the base housing, the stator body having a communicating mating channel and a sliding groove, the winding assembly being slidably disposed in the sliding groove, and a rotating groove between the base housing and the first end of the stator body; an adjustment mechanism, the adjustment mechanism including a rotating block rotatably disposed in the rotating groove, the rotating block having a transmission groove, the winding assembly being slidably mounted in the transmission groove; and a rotor assembly, the rotor assembly including a rotor body and an output shaft, the rotor body rotating to drive the output shaft to rotate. When the rotating block rotates, the winding assembly moves radially along the stator body within the sliding groove to adjust the gap between the winding assembly and the rotor body. The reluctance motor of this application has high adaptability to different loads, and the adjustment methods of the reluctance motor are diverse, allowing for better adjustment of speed and torque.

This invention relates to the field of plunger pump technology, specifically to an integrated reluctance motor high-pressure plunger pump, comprising a main pumping section and a booster section. The main pumping section is connected forward to an interface component and rearward to the booster section. The booster section has a pump inlet and a pump outlet. The main pumping section includes a main housing assembly, a rotor assembly, and a stator assembly. The stator assembly is disposed around and fixed to the inner wall of the main housing assembly, and the rotor assembly is located in the inner ring of the stator assembly and connected to the booster section. This invention uses a pump-type reluctance motor for drive. The pump-type reluctance motor itself can perform the function of pumping fluid, and at the same time, the torque transmitted by its shaft can drive the plunger pump to output high-pressure fluid, realizing secondary pressurization of the fluid. The overall structure is compact, easy to install, has low noise, and low overall cost. The pump-type reluctance motor is immersed in the fluid to achieve self-cooling, resulting in low overall temperature rise and long service life.