19 results about "Motor capacitor" patented technology

A hard start capacitor replacement unit has a plurality of capacitors in a container sized to fit in existing hard start capacitor space. The capacitors are 4 metallized film capacitors wound in a single cylindrical capacitive element. The container has a common terminal and capacitors value terminals for the plurality of capacitors, which may be connected singly or in combination to provide a selected capacitance. An electronic or other relay connects the selected capacitance in parallel with a motor run capacitor. The hard start capacitor replacement unit is thereby adapted to replace a wide variety of hard start capacitors.

A variable-frequency drive includes a rectifier, a filter, an inverter, a capacitor bank, and control circuitry. The rectifier converts AC power from a power source to DC power on a DC bus for filtering by the filter. The inverter converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. The capacitor bank can store regenerative power on the DC bus from the inverter and can supply the stored DC power to the DC bus for conversion to the three-phase AC power to drive the electric motor. The control circuitry pre-charges the capacitor bank from the AC power of the power source. The control circuitry monitors one or more parameters of the variable-frequency drive and detects one or more fault conditions associated with the one or more monitored parameters.

A motor is coupled to a motor control device including a set of high-side switches, a set of low-side switches, a capacitor and a controller. The set of high-side switches and the set of low-side switches are coupled to the motor. The capacitor is coupled to the set of high-side switches. The controller is coupled to the capacitor, the set of high-side switches and the set of low-side switches. A method of braking the motor includes upon the motor being disconnected from an external power source, the controller receiving a supply voltage from the capacitor, turning on the set of low-side switches, turning off the set of high-side switches, and the controller switching the set of low-side switches according to the supply voltage.

The utility model discloses a motor capacitor box installation structure which comprises a motor body, a capacitor and a capacitor box, the bottom of the motor body is provided with a plurality of clamping positions, the top of the side wall of the capacitor box is provided with a plurality of climbers, the climbers at the top of the capacitor box are connected with the clamping positions at the bottom of the motor body in a clamping mode, and a stud is arranged in the bottom wall of the capacitor box. The capacitor is provided with a mounting plate, the capacitor is firstly placed in the capacitor box, and the mounting plate of the capacitor is in threaded connection with the stud through a screw, so that the capacitor is fixedly mounted in the capacitor box. The exposed part of the back surface of the capacitor box can improve the heat dissipation performance of the motor, the capacitor is installed on the capacitor box, so that the phenomenon that the capacitor touches the motor body to increase heating and vibration can be prevented, the service life of the capacitor is prolonged, and the use stability of the motor is improved.

A variable frequency drive to drive an electric motor for a reciprocating pumping unit includes a rectifier, a filter, an inverter, and a capacitor bank. The rectifier converts AC power to DC power for filtering by the filter. The inverter converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. The capacitor bank can store regenerative power passed from the motor through the inverter and can supply the stored DC power to the DC bus to drive the electric motor. Control circuitry can control the speed of the electric motor provided by the variable frequency drive during strokes of the pumping unit. The control circuitry can pre-charge the capacitor bank from AC power. The control circuitry can detect any fault condition.

The invention relates to an automatic water valve control device for a hydraulic soot blower, and the device comprises a local control box P2 which is connected with local installation equipment P6, P5, P4 and P3 through cables 01, 02, 03 and 04; a local control box inner wiring terminal G2, a remote alarm signal wiring terminal G3 and an electrode type water level gauge part G4 are arranged in the grounding control box P2; the alternating current control part G1 comprises a left main line L and a right main line N, is led from an alternating current 220V power supply and is provided by a remote cable 05, the left main line L and the right main line N pass through an air switch KG1, lower opening lines of the air switch are J01 and J02, a plurality of relay contacts, a position switch, a motor, a capacitor, a pressure controller and a water level gauge are arranged in the middle of the alternating current control part G1, and the alternating current control part G1 is used for automatically switching on and switching off a waterway in the soot blowing process of the hydraulic soot blower. Meanwhile, the functions of protecting the mechanical gun barrel and preventing water leakage are achieved, articles needed for manufacturing are common elements on site, the price is low, installation is convenient, and a large amount of cost is saved when the system is used for replacing original equipment.

The invention relates to the field of capacitor films, in particular to a high-temperature-resistant BOPET capacitor film and a preparation method thereof.The capacitor film comprises a first protection layer, an inner core layer and a second protection layer which are sequentially arranged from top to bottom; the inner core layer is prepared from a high-insulation polyester material; and the first protective layer and the second protective layer are made of the same material and are both prepared from a high-temperature-resistant polyester material. Wherein the inner core layer has charge storage and release functions and has high insulativity and low dielectric loss, and the protective layer can tolerate higher working temperature and prevent capacitor failure caused by thermal degradation; interface molecular chain fusion is realized through a three-layer co-extrusion process (protective layer / core layer / protective layer), the performance complementation of the three-layer architecture is realized, and the composite material can adapt to high-temperature, high-strength and high-field-intensity scenes such as new energy vehicle motor capacitors and photovoltaic inverters.

The utility model discloses a motor capacitor box, which comprises a motor casing and a capacitor box detachably connected to one side of the motor casing, and is characterized in that a flange is arranged on the peripheral side of the motor casing, a clamping groove is concavely formed in one side of the flange, and a notch matched with the flange is formed in the capacitor box. A clamping block capable of being matched with the clamping groove is rotationally arranged on one side of the capacitor box, and a limiting component capable of driving the clamping block to be kept embedded in the clamping groove is arranged on the capacitor box. The capacitor box is embedded and matched with the flange of the motor shell through the notch, so that after the capacitor box and the motor shell are installed in a pre-positioning mode, the clamping block located on the capacitor box is embedded in the clamping groove of the flange in a rotating fit mode, the clamping block is driven to be kept embedded in the clamping groove through the limiting component, and installation connection between the capacitor box and the motor shell is achieved. Therefore, the defect that the capacitor box needs to be installed by locking a plurality of screws is effectively avoided.

A variable-frequency drive includes a rectifier, a filter, an inverter, a capacitor bank, and control circuitry. The rectifier converts AC power from a power source to DC power on a DC bus for filtering by the filter. The inverter converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. The capacitor bank can store regenerative power on the DC bus from the inverter and can supply the stored DC power to the DC bus for conversion to the three-phase AC power to drive the electric motor. The control circuitry pre-charges the capacitor bank from the AC power of the power source. The control circuitry monitors one or more parameters of the variable-frequency drive and detects one or more fault conditions associated with the one or more monitored parameters.

The invention relates to the technical field of power capacitors, in particular to a safe grounding alternating-current motor capacitor which comprises a capacitor body, a protection frame and a buckle mechanism, and the capacitor body is arranged in the protection frame; the top of the capacitor body is provided with a threaded column, the protection frame is provided with a buckle groove, and the threaded column passes through the buckle groove. The buckle mechanism comprises a positioning plate, clamping plates and inclined struts, the clamping plates are arranged on the left side and the right side of the positioning plate, the bottoms of the clamping plates penetrate through the buckle grooves to abut against the bottom of the protection frame, and the inclined struts are arranged on the side walls of the clamping plates and abut against the top of the protection frame. The positioning plate is fixedly connected with the threaded column, and the positioning plate, the clamping plate and the inclined strut are made of metal conductive materials. According to the invention, the capacitor body can be fixed in the protection frame, so that the capacitor is prevented from loosening or falling off during installation and use; moreover, the buckle mechanism made of a metal conductive material can achieve the grounding protection of the capacitor body. The installation of capacitor bodies with different sizes can be adapted; and the adaptability and flexibility of equipment are improved.

1. Name of this design product: Vegetable chopper base. 2. Application of this design: for waterproofing motors and for fixing and supporting motor capacitors, plastic buckets, or stainless steel buckets. 3. The key design feature of this product is its shape. 4. Images or photos that best illustrate the design key points: composite state diagrams.

The utility model discloses a kind of capacitor aging machine automatic feeding structure, including feeding frame, conveying assembly is provided on the feeding frame, capacitor body is placed on conveying assembly, position baffle is installed on the feeding frame by position adjusting assembly, capacitor body is located in the side position of position baffle, the top of the feeding frame is equipped with drop hole, drop hole is located in the side position of conveying assembly, support adjusting groove is equipped in the side of drop hole, this capacitor aging machine automatic feeding structure, with the movement of driving motor capacitor body, when the tail of capacitor body is towards drop hole, its gravity center will suddenly be out of balance, will drop in the collecting box below, using the gravity center change of different position, capacitor body's placement position can be quickly adjusted, after conveying belt is conveyed, it can be regularly automatically fed.

The application relates to a box type motor capacitor, which comprises a shell and a capacitor main body, the capacitor main body is welded with a first lead wire and a second lead wire, the first lead wire and the second lead wire are respectively connected with a first protective cover and a second protective cover; the inner wall of a first connecting sleeve is provided with inner mounting threads and a first limiting convex ring, the first connecting sleeve is sleeved on the first protective cover, the inner wall of a second connecting sleeve is provided with outer mounting threads and a second limiting convex ring, the second connecting sleeve is sleeved on the second protective cover, and the inner mounting threads are engaged with the outer mounting threads. The first connecting sleeve is fixedly connected to the second connecting sleeve through the engagement of the inner mounting threads on the outer mounting threads, the first lead wire and the second lead wire are enclosed into a ring shape, the first lead wire and the second lead wire are not prone to being entangled with each other or other lead wires when the capacitors are placed in mutual stacking, and the capacitors are convenient to take.

A variable-frequency drive includes a rectifier, a filter, an inverter, a capacitor bank, and control circuitry. The rectifier converts AC power from a power source to DC power on a DC bus for filtering by the filter. The inverter converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. The capacitor bank can store regenerative power on the DC bus from the inverter and can supply the stored DC power to the DC bus for conversion to the three-phase AC power to drive the electric motor. The control circuitry pre-charges the capacitor bank from the AC power of the power source. The control circuitry monitors one or more parameters of the variable-frequency drive and detects one or more fault conditions associated with the one or more monitored parameters.

A variable frequency drive to drive an electric motor for a reciprocating pumping unit includes a rectifier, a filter, an inverter, and a capacitor bank. The rectifier converts AC power to DC power for filtering by the filter. The inverter converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. The capacitor bank can store regenerative power passed from the motor through the inverter and can supply the stored DC power to the DC bus to drive the electric motor. Control circuitry can control the speed of the electric motor provided by the variable frequency drive during strokes of the pumping unit. The control circuitry can pre-charge the capacitor bank from AC power. The control circuitry can detect any fault condition.

The utility model discloses a motor capacitor installation clamp and a junction box comprising the same, the motor capacitor installation clamp comprises a fixed piece and a movable piece, the fixed piece comprises a fixed part and a first crimping part which are connected with each other; the fixing part is fixed with a binding post in the junction box; the movable part comprises a connecting part and a second crimping part which are connected with each other, and the connecting part is movably connected with the first crimping part, so that the first crimping part and the second crimping part respectively abut against the outer surface of the capacitor; and the first crimping part, the second crimping part and the inner bottom surface of the junction box fix the capacitor through the balance of acting forces in three directions. The motor capacitor installation hoop is composed of two parts, the fixed part and the movable part are movably connected so that the motor capacitor installation hoop can adapt to capacitors of different sizes, the connection position is adjusted according to different sizes of the capacitors, and the capacitors are fixed through extrusion of the first crimping part and the second crimping part in different directions. Therefore, the problems that an existing clamp is single in application condition and needs multiple times of die repairing are solved.

A marine propulsion system includes an outboard motor including an outboard motor engine, a propulsion generator to be driven by the outboard motor engine, and an electric starter to start the outboard motor engine. The outboard motor is installed on a hull, and an outboard motor capacitor is provided in the outboard motor to supply to the starter power to start the outboard motor engine. The outboard motor capacitor has a higher output per unit volume than a lead storage battery.

The utility model relates to the technical field of power capacitors, in particular to a safe grounding alternating-current motor capacitor, which comprises a capacitor body, a protective frame and a buckle mechanism, and is characterized in that the capacitor body is arranged in the protective frame; the top of the capacitor body is provided with a threaded column, the protection frame is provided with a buckle groove, and the threaded column passes through the buckle groove. The buckle mechanism comprises a positioning plate, clamping plates and inclined struts, the clamping plates are arranged on the left side and the right side of the positioning plate, the bottoms of the clamping plates penetrate through the buckle grooves to abut against the bottom of the protection frame, and the inclined struts are arranged on the side walls of the clamping plates and abut against the top of the protection frame. The positioning plate is fixedly connected with the threaded column, and the positioning plate, the clamping plate and the inclined strut are made of metal conductive materials. According to the utility model, the capacitor body can be fixed in the protection frame, so that the capacitor is prevented from loosening or falling off during installation and use; moreover, the buckle mechanism made of a metal conductive material can achieve the grounding protection of the capacitor body. The installation of capacitor bodies with different sizes can be adapted; and the adaptability and flexibility of equipment are improved.

This application provides a motor filter capacitor connection structure and a motor, relating to the field of motor capacitor installation technology, aiming to solve the technical problem of the difficulty in connecting capacitor leads to brushes. The motor filter capacitor connection structure includes: a ring-shaped circuit board, multiple connectors, and multiple flexible plug-in components. The ring-shaped circuit board is mounted on the motor end cover and has a plate array capacitor. Each brush sleeve has a flexible plug-in component on its side wall, and each flexible plug-in component has a flexible plug-in slot. One end of each of the multiple connectors is connected to the ring-shaped circuit board, and the other end of each connector extends away from the ring-shaped circuit board and plugs into a corresponding flexible plug-in slot. By providing connectors on the ring-shaped circuit board, when the ring-shaped circuit board is mounted on the motor end cover, the connectors can be directly electrically connected to the positive and negative brushes, eliminating the need for additional electrical connection wires when connecting the capacitor to the positive and negative terminals of the motor, thus solving the problem of the difficulty in installing capacitors in small spaces.