Speed regulation three-phase squirrel-cage asynchronous motor
An asynchronous motor and squirrel-cage technology, applied in the field of electric motors, can solve problems such as low work efficiency, high cost, and complex structure, and achieve the effects of cost reduction, simplified structure, and simple operation
Inactive Publication Date: 2016-01-06
王宏戈
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Problems solved by technology
There are three main methods of speed regulation currently used. 1. Electromagnetic speed regulation motor, the prime mover is always full-voltage and has low working efficiency; 2. Wound motor, the series resistance in the rotor winding of the motor is used for speed regulation, but there are many winding motors. A set of resistance box is added, the structure is complicated and easy to be damaged; 3. The frequency converter is used to adjust the speed of the motor, and the frequency converter can change the frequency freely.
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[0012] Such as figure 1 As shown, the speed-regulating three-phase squirrel-cage asynchronous motor includes a casing 1, and the casing 1 includes all parts of an existing common motor casing, the stator 2 is a stator often used in an existing motor, and the rotor 3 and the motor The shaft 4 also adopts the commonly used rotor and motor shaft in the existing motor, wherein the casing 1 and the motor shaft 4 are extended, the electric slide rail 5 adopts a common type in the motor, the stator 2 is fixed inside the casing 1, and the motor shaft 4 and the rotor 3 is fixed, the rotor 3 is placed in the cavity of the stator 2, and the electric slide rail 5 is fixed on one end of the inner wall of the extension part of the casing 1. Unlike the existing motor, the motor of the present invention also includes a speed-regulating iron core 6. The length of the stator 2 is an additional stator extension 7 along the circumference, the stator extension 7 is integrally formed with the stato...
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The present invention relates to a speed regulation three-phase squirrel-cage asynchronous motor. The speed regulation three-phase squirrel-cage asynchronous motor is characterized in that an electrical slide rail is fixed on the inner wall of a prolonging part of a chassis, and is characterized by also comprising a speed regulation iron core, a stator prolonging segment enabling the length of a stator to be increased additionally along the circumference, a connecting sheet, and a regulation and control module used for controlling the transmission of the electrical slide rail. The prolonging direction of the stator prolonging segment prolongs a certain distance towards the top end direction of the stator, the speed regulation iron core is a cylindrical structure of which the middle part is equipped with a through hole, and the connecting sheet is formed by outwards extending two rod bodies from the symmetrical two ends of a disc-shaped structure respectively. The top end of the speed regulation iron core is connected with the connecting sheet fixedly, and the end parts of the rod bodies of the connecting sheet are connected with the electrical slide rail. The connecting sheet can move front and back along with the transmission of the electrical slide rail, and the through hole of the speed regulation iron core penetrates a motor shaft and can be plugged in the interior of the stator prolonging segment cooperatively along the front and back movement of the motor shaft. According to the present invention, the rotating speed of the motor is controlled by changing the magnetic resistance of a main magnetic circuit, and the speed regulation three-phase squirrel-cage asynchronous motor is good in speed regulation effect and low in cost, is convenient to control, and is durable.
Description
technical field [0001] The invention belongs to the field of motors, in particular to a speed-regulating three-phase squirrel-cage asynchronous motor. Background technique [0002] Three-phase squirrel-cage asynchronous motors are widely used. Due to the complex requirements of various application fields, the use of motor speed regulation is also very extensive. There are three main methods of speed regulation currently used. 1. Electromagnetic speed regulation motor, the prime mover is always full-voltage and has low working efficiency; 2. Wound motor, the speed is adjusted by series resistance in the rotor winding of the motor, but there are many winding motors. A set of resistance boxes is added, the structure is complex and easy to be damaged; 3. The frequency converter is used to adjust the speed of the motor, and the frequency converter can change the frequency freely, which is widely used. Contents of the invention [0003] The object of the present invention is to...
Claims
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IPC IPC(8): H02K17/12H02P25/24
Inventor 王宏戈
Owner 王宏戈