16 results about "Startup winding" patented technology

The invention relates to the technical field of new energy grid connection, in particular to a new energy grid-connected inverter system based on a double-stator synchronous motor interface, which comprises a three-phase inverter and a double-stator synchronous motor, the double-stator synchronous motor comprises a first stator, a rotor and a second stator. Planar air gaps exist between the rotor and the first stator and between the rotor and the second stator. The rotor comprises a first rotor and a second rotor which are rigidly connected, the first rotor is axially adjacent to the first stator, the second rotor is axially adjacent to the second stator, and a magnetic isolation ring is arranged between the first rotor and the second rotor; each of the first stator and the second stator comprises a stator core and an armature winding, the first rotor comprises a first rotor core, an excitation winding and a starting winding, and the second rotor comprises a second rotor core and a permanent magnet. According to the invention, the double-stator configuration can realize voltage transformation and frequency conversion functions, and can solve the problems of reduced power grid inertia, insufficient short-circuit capacity, aggravated broadband oscillation risk and the like caused by grid connection of large-scale new energy through power electronic equipment.

The invention discloses a clothes dryer motor reverse and forward rotation control method and a clothes dryer, and relates to the technical field of clothes dryers, the clothes dryer motor reverse and forward rotation control method comprises a main winding, an auxiliary winding, a controller, a first relay, a second relay and a centrifugal switch, the main winding and a power source are connected in series, and the first relay, the auxiliary winding, the first relay, the centrifugal switch and the power source are electrically connected. And the controller is used for controlling the on-off of the first relay and the second relay so as to realize the exchange between the head end and the tail end of the secondary winding. Only the auxiliary winding column is always used as the starting winding, strict requirements for consistency of parameters of the main winding and the auxiliary winding in the prior art are not needed, the specification of the main winding can be flexibly matched, the quality control difficulty in the production process is reduced, and the production efficiency and the yield of the motor are improved.

The present application relates to the technical field of single-phase asynchronous motors, and discloses a single-phase asynchronous motor starting control circuit based on an MCU and dual thyristors, which includes an MCU control unit, a main thyristor, a secondary thyristor, an electricity metering chip, and a protection circuit. In particular, during the startup phase, the MCU control unit first sends a trigger signal to the secondary thyristor to put the secondary thyristor in a conductive state, and the secondary thyristor connects to the starting winding to provide additional starting torque for the single-phase asynchronous motor; after the startup conditions are met, the MCU control unit then sends a trigger signal to the main thyristor to put the main thyristor in a conductive state, and the main thyristor connects to the live wire to put the single-phase asynchronous motor into normal operation. In this way, the starting winding is energized only when necessary, avoiding energy loss caused by continuous heating of the PTC and improving the overall energy efficiency of the system.

The present invention discloses a PTC starter with a safety structure and an installation method thereof. The PTC starter with the safety structure includes a PTC chip, and an elastic sheet, a first electrode plate, a second electrode plate, a metal connecting sheet, a compressor running winding terminal M, and a compressor starting winding terminal S that are connected to the PTC chip. The PTC chip of the PTC starter is arranged deviating from the area between the compressor running winding terminal M and the compressor starting winding terminal S; alternatively, the PTC chip, the first electrode plate, and the second electrode plate are all horizontally arranged away from the compressor running winding terminal M and the compressor starting winding terminal S. When the PTC chip fails and burns, it will not cause the glass body of the terminal post to be heated and melted, preventing the risk of leakage and combustion of the combustible refrigerant inside the compressor.

This application relates to the field of startup control technology, and discloses a startup timing control optimization method for a startup control circuit. Upon receiving a signal, the MCU control unit initializes a timer and simultaneously triggers the main and secondary thyristors to conduct at time T1. Real-time current data is sampled at a high frequency of 4kHz using an electrical metering chip to obtain a current waveform data sequence. Then, based on this data, the optimal engagement time of the startup winding is predicted. Simultaneously, the MCU control unit continuously records the engagement time of the startup winding and monitors the real-time current through the electrical metering chip. Finally, based on the real-time current, the engagement time of the startup winding, and the optimal engagement time, the MCU control unit adaptively cuts off the secondary thyristor, ensuring that the startup winding is accurately disconnected at a more appropriate time, thereby achieving the goals of reducing energy consumption and improving startup efficiency and stability.

The invention relates to the technical field of single-phase alternating-current asynchronous motors, in particular to a single-phase motor stator core salient pole winding structure and a design method thereof. The stator iron core is designed into a salient pole structure, so that the stator winding coil is optimized into a concentrated winding mode. The stator winding coil is designed to be the main winding, the induction winding and the starting winding, compared with a stator winding of a split-phase single-phase motor in the background technology, the induction winding is added, a capacitor or a resistor connected to the starting winding in series is removed, and the stator winding is more stable. The fault rate of the single-phase motor is reduced, the use efficiency of the single-phase motor is improved, and the service life is prolonged. According to the design method of the salient pole winding structure of the stator core of the single-phase motor, the winding link is simplified, the production difficulty is reduced, automatic winding and offline production can be easily realized, the processing technology is simplified, the fault rate of the single-phase motor is reduced, the working efficiency of the single-phase motor is improved, and the service life is prolonged.

The utility model mainly relates to the technical field of compressor control, and provides a current type starter in order to solve the problem that the current type starter is easily damaged due to impulse voltage and impulse current when the current type starter is disconnected from a starting winding of a compressor in the starting process of the compressor. Comprising a heavy punch starter, a starting capacitor, an NTC element and an X2 safety capacitor, an operation winding of the compressor is connected with one end of a coil of the heavy punch starter, the other end of the coil of the heavy punch starter is connected with a zero line end, and a static contact of the heavy punch starter is connected with a starting winding of the compressor. A movable contact of the heavy punch starter is sequentially connected with the NTC element and the starting capacitor and then connected with an external zero line end, a common end of the compressor is connected with an external live wire end, the X2 safety capacitor is connected with the NTC element and the starting capacitor in parallel, and current impact on a contact of the current type starter and impact on a starting winding coil of the compressor in the starting process of the compressor can be reduced.

The utility model is suitable for the technical field of motor starters, and provides a shield pump single-phase motor silicon controlled rectifier starter module, which comprises a thyristor starter electrically connected with a shield pump single-phase motor. A starting winding and an operation winding which are connected in parallel are arranged in the shielding pump single-phase motor. The starting winding is connected in series with a power output resistor; the thyristor starter comprises a silicon controlled rectifier, a bimetallic electrostriction blade delay switch and a heating resistance wire; compared with traditional resistor split-phase starting, capacitor starting, centrifugal switch starting and the like, the device has the advantages that the size is smaller, the stability is higher, the starting torque is larger, the device is not limited by temperature, and the starting speed is higher. A single-phase motor of the submerged shield pump is broken through, and the submerged shield pump can be efficiently started and operated without using a capacitor, a centrifugal switch or a PTC (Positive Temperature Coefficient) starter and other devices traditionally.

An embodiment of the present invention provides a compressor startup control method, device, compressor, and storage medium. The compressor includes: a controller, a running winding, a starting winding, a starting capacitor, a power switch module, and a starting switch. The method includes: upon receiving a start signal, obtaining the ambient temperature of the compressor and the operation record of the compressor; calculating the time difference between the compressor shutdown time in the operation record and the current time to obtain the shutdown duration; if the ambient temperature meets the preset temperature condition and the shutdown duration meets the preset duration, then controlling the start switch to disconnect and controlling the power switch module to connect to the first voltage of the power supply to heat the compressor according to the preset power-on duration; after the preset power-on duration, controlling the start switch to close and controlling the power switch module to connect to the second voltage to start the compressor. The method of the present application reduces the manufacturing cost of electrical appliances containing compressors.

The present invention discloses a linear-rotational two-degree-of-freedom wave generator, comprising a mover, a rotor and a stator coaxially nested from the inside to the outside, with gaps left between the mover and the rotor, and between the rotor and the stator, the mover comprising a cylindrical iron core and a mover spiral permanent magnet attached to the outer wall of the cylindrical iron core; the rotor comprising a cylindrical back iron, on the inner wall of which a rotor spiral permanent magnet is attached, a plurality of racks uniformly spaced along the circumference are arranged on the outer wall, a starting winding is wound around the tooth root of each rack, and each starting winding is used to generate a radially inward magnetic field to suppress the radial force between the mover and the rotor and accelerate the starting of the motor; the stator comprising a plurality of U-shaped iron cores uniformly spaced along the circumference, a stator permanent magnet is arranged between each two adjacent U-shaped iron cores, each stator permanent magnet and the side teeth of the two adjacent U-shaped iron cores constitute a stator salient pole tooth, and a stator winding is arranged on each stator salient pole tooth.

The application relates to the field of new energy grid connection technology, in particular to a new energy grid connection inverter system based on a double-stator synchronous motor interface, which comprises a three-phase inverter and a double-stator synchronous motor; the double-stator synchronous motor comprises a first stator, a rotor and a second stator, and there are plane air gaps between the rotor and the first stator and the second stator; the rotor comprises a first rotor and a second rotor which are rigidly connected, the first rotor is axially adjacent to the first stator, the second rotor is axially adjacent to the second stator, and a magnetic isolation ring is arranged between the first rotor and the second rotor; the first stator and the second stator each comprise a stator core and an armature winding, the first rotor comprises a first rotor core, an excitation winding and a starting winding, and the second rotor comprises a second rotor core and a permanent magnet. In the application, the double-stator configuration can realize the functions of voltage transformation and frequency conversion, and can solve the problems of reduced power grid inertia, insufficient short-circuit capacity and intensified wide-frequency oscillation risk caused by large-scale new energy grid connection through power electronic equipment.

The application relates to a contactor and an electrical device. The contactor comprises a rectification module, which is used for full-wave rectification of an input of the contactor during starting and half-wave rectification of the input of the contactor during maintaining; an electromagnetic module, which comprises at least two coils, the at least two coils serving as starting windings during starting of the contactor, a part of the at least two coils serving as first maintaining windings during maintaining of the contactor, another part of the at least two coils generating a reactance as a voltage reduction component together with a pulsating direct current obtained through the half-wave rectification and also serving as second maintaining windings; and a conversion module connected with the rectification module, the conversion module being used for outputting starting current of full-wave rectification of the rectification module to the electromagnetic module during starting and outputting maintaining current of half-wave rectification of the rectification module to the electromagnetic module during maintaining. The contactor is used to omit a voltage reduction component, and to eliminate the problem of repeated starting and stopping of the contactor caused by faults of the voltage reduction component.

The invention relates to the technical field of starting control, and discloses a starting time sequence control optimization method for a starting control circuit, and the method comprises the steps: enabling an MCU control unit to initialize a timer, and triggering the conduction of a main silicon controlled rectifier and an auxiliary silicon controlled rectifier at a T1 moment at the same time. Real-time current data are sampled at high frequency of 4kHz through an electric metering chip, and a current waveform data sequence is obtained. Then, the optimal intervention duration of the starting winding is predicted based on the data, and meanwhile, the MCU continuously records the intervention time of the starting winding and monitors the real-time current through the electric metering chip; finally, according to the real-time current, the intervened time of the starting winding and the optimal intervened time, the MCU control unit cuts off the auxiliary silicon controlled rectifier in a self-adaptive mode, it is ensured that the starting winding is accurately cut off at a relatively proper time, and therefore the purposes of reducing energy consumption and improving starting efficiency and stability are achieved.

The invention relates to a contactor and electrical equipment. The contactor comprises a rectification module which is used for carrying out full-wave rectification on the input of the contactor when the contactor is started and carrying out half-wave rectification on the input of the contactor when the contactor is kept; the electromagnetic module comprises at least two coils, the at least two coils serve as starting windings when the contactor is started, one part of the at least two coils serves as a first holding winding when the contactor is held, and the other part of the at least two coils and pulsating direct current obtained through half-wave rectification jointly act to generate inductive reactance to serve as a voltage reduction component and also serve as a second holding winding; and the conversion module is connected with the rectification module, and the conversion module is used for outputting starting current of full-wave rectification of the rectification module to the electromagnetic module during starting and outputting holding current of half-wave rectification of the rectification module to the electromagnetic module during holding. By adopting the contactor, a step-down assembly is omitted, and the problem of repeated start and stop of the contactor caused by faults of the step-down assembly is completely eradicated.

The invention provides an auxiliary power supply circuit and a control method thereof, and a light storage and charging integrated system. The auxiliary power supply circuit comprises a transformer; the primary side of the transformer comprises a starting winding and a main power winding which are arranged on the same magnetic core; wherein the first end of the starting winding is connected to a first input source, and the second end of the starting winding is connected to a first reference ground end through the first switching device; the first end of the main power winding is connected to a second input source, and the second end of the main power winding is connected to a second reference ground end through a second switching device. The secondary side of the transformer comprises a first output winding and a second output winding, and the first output winding and the second output winding are respectively used for outputting electric energy of the auxiliary power supply circuit. According to the scheme, on the premise that stable power supply of the power supply circuit is met, at least one transformer and related circuit structures thereof are omitted, so that the circuit design is simplified, and the hardware cost and standby loss are reduced.