Single-phase motors Single-phase capacitor motors wholesale single-phase capacitor start motor single phase capacitor ..

Single-phase motor (single-phase motors Single-phase capacitor motors wholesale single-phase capacitor start motor is single-phase capacitor run motor) How it works: single-phase motor (single-phase motors Single-phase capacitor motors wholesale single-phase capacitor start motor is single-phase capacitor run motor) Start points capacitor start, and resistance to start. There are shaded pole motor. Shaded Pole no additional start single phase motor connected capacitors object is achieved by phase-shifting effect of the capacitor, the single-phase AC electric isolated another phase phase difference of 90 degrees AC. The two-phase alternating current were sent to two or four motor winding, rotating magnetic field is formed in the motor, rotating magnetic field induced current in the rotor, the opposite direction of the magnetic field and the rotating magnetic field induced current generated by the rotating magnetic field Sliding into the rotating state. Only a single-phase AC motor windings, squirrel-cage rotor is in. When single-phase sinusoidal current through the stator windings, the motor will produce an alternating magnetic field, the strength and direction of the magnetic field at any time intercropping sine law, but in the spatial orientation is fixed, so called the alternating magnetic field pulsating magnetic field. This alternating pulsating magnetic field can be decomposed into two at the same rotational speed, the rotational direction of the rotating magnetic field opposite to each other, when the rotor is stationary, the two rotating magnetic field generated in the rotor in two equal and opposite torque direction, such that the synthesis of torque is zero, so the motor can not be rotated. When we use the force of the motor to rotate in one direction (eg clockwise rotation), then the movement of the rotary cutting magnetic field lines and clockwise rotation of the rotor becomes smaller; the rotating magnetic field between the rotor and the counter-clockwise direction of cutting magnetic line movement becomes larger. This balance broke the total electromagnetic torque generated by the rotor will no longer be zero, the rotor will push direction along the spin. For single-phase motors can automatically spin up, we can add a starter in the stator winding, starting winding and primary winding 90 degrees in the space, start winding to a suitable capacitor in series so that the current in the primary windings approximately 90 degrees phase, the so-called phase separation principle. Such a difference in the time the two power flow into two 90-degree by 90-degree winding in space, will have a (two-phase) rotating magnetic field in space, in this rotating magnetic field, the rotor will automatically start, centrifugal switch or other automatic control device after starting, until a certain speed rise time, by means of a rotor mounted on the start winding is disconnected, and only the main winding work during normal operation. So, the start winding can be made short work. But there is a lot of time, start winding not disconnected, we call this motor is capacitive single-phase motor, steering motor to change this, by changing the position of the capacitor connected in series to achieve. Another method in a single-phase motor, rotating magnetic field is referred to as shaded pole method, also known as single-phase shaded pole motor. Such motor stator made salient pole, there are two poles and four poles. Each pole in the 1 / 3-1 / 4 full pole face at the start of a small groove, the magnetic pole is divided into two parts, the suit a short circuit copper ring on a small part, as if this part of the pole cover up the same, so called shaded pole motors. Single-phase winding suit on the entire pole, each pole coils are connected in series, the polarity must be generated sequentially by N, S, N, S arranged in the connection. When the stator windings are energized after the main magnetic flux generated in the magnetic poles, according to Lenz's law, which passed through a short circuit copper ring of the main magnetic flux generated a lag of 90 degrees in phase induced current in the copper ring, this current generation of magnetic Tong also lags behind in phase the main flux, its role and the capacitor start motor windings rather to produce a rotating magnetic field causes the motor to turn up. Single-phase induction motor (single-phase motors Single-phase capacitor motors wholesale single-phase capacitor start motor is single-phase capacitor run motor) failure analysis and repair: single-phase motor (single-phase motors Single-phase capacitor motors wholesale single-phase capacitor start motor single-phase capacitor run motor) Depending on the starting method is divided into operating mode or single-phase resistance start, single-phase capacitor start, capacitor run single-phase, single-phase capacitor start and run, single phase shaded pole and other types, and single-phase capacitor start-up and operation of asynchronous motors for the most commonly used. ? Single-phase induction motor has a simple structure, low cost, etc., it is widely used in rural areas. Single-phase motor (single-phase motors Single-phase capacitor motors wholesale single-phase capacitor start motor is single-phase capacitor run motor) single phase resistance start depending on the method or operation is divided into start mode, single-phase capacitor start, single-phase capacitor run single phase capacitor start and run, single phase shaded pole and other types, and single-phase capacitor start and run induction motor is most commonly used. In rural areas, due to poor quality of power supply, misuse and other reasons, the high failure rate of single-phase motors, mainly for motor severe fever, rotation weakness, difficulty in starting, burning fuses. Single-phase capacitor start asynchronous motor common faults and the main reasons are: Fault 1: normal power supply, power and motor will not start. The reasons are: 1 Motor lead circuit; 2 primary winding or secondary winding open circuit; 3 centrifugal switch contacts not close; 4 open capacitor; 5 bearing stuck; & rotor and stator grazing. Symptom 2: The load can be started, or outside help can start, but start slow and uncertain turn. The reason: a winding open; 2 centrifugal switch contacts bad; 3 start capacitor is open or damaged. Symptom 3: The motor is started soon after the heat even burned windings. The reason is: between 1 Main Windings or ground; short circuit between 2 main and secondary winding; 3 start centrifugal switch contacts do not break open; 4 main and auxiliary winding each other wrong; 5 of the stator and the rotor friction. Fault 4: The motor speed is low, running weakness. Reason: slight short circuit between a primary winding turns; 2 run capacitor is open or reduction in capacity; 3 bearing too tight; 4 supply voltage is low. Fault 5: burning fuse. The reasons are: 1 winding serious short circuit or ground; 2. Lead grounding or touching; the third capacitor short-circuit breakdown. Failure 6: too much noise when the motor is running. The reasons are: 1 winding leakage; 2 centrifugal switch is damaged; 3 bearing damage or gap is too large; foreign materials within four motors