A method for smooth starting of mining motor
A technology for smooth starting and motor starters, which is applied to the starters of single multi-phase induction motors, motor generators/starters, starter parts, etc. Variable resistance, short service life and other problems, to achieve the effect of stable lifting, simple and convenient operation, and improved sealing performance
Active Publication Date: 2020-01-31
惠东嘉华材料有限公司
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Problems solved by technology
[0004] In daily life, after a period of use of the electro-hydraulic rheostat starter, the internal electrolyte solution will be consumed due to escape or leakage. The rheostat starter is more complicated when it is rheostat, and there are great limitations
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[0033] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0034] Such as figure 1 Shown, a kind of method for smooth starting of mining motor of the present invention, the method comprises the following steps:
[0035] s1: connect the motor with the motor starter;
[0036] s2: connect the regulator with the starter in s1;
[0037] s3: Start the motor starter to make the motor work:
[0038]Wherein, the motor starter used in this method includes a lifting mechanism 1, a first sealing mechanism 2, an overhanging box body 3, a container body 4, an output mechanism 5, a liquid adding mechanism 6, a lower plate 7 and a second sealing mechanism 8, The side portion of the container body 4 is fixed to the overhanging box body 3, and the inside of the overhanging box body 3 is provided with the lifting mechani...
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The invention relates to the technical field of motor protection, and specifically relates to a mining motor steady starting method. A motor starter adopted by the method comprises a lifting mechanism, a first sealing mechanism, an outward extension box body, a container body, an output mechanism, a liquid adding mechanism, a lower electrode plate and a second sealing mechanism; by virtue of the lifting mechanism, the spacing between two electrode plates can be changed; by virtue of the first sealing mechanism, sealing between the output mechanism at the top end and the container body can be realized; by virtue of the liquid adding mechanism, automatic liquid adding to the interior of the container body can be realized; by virtue of the second sealing mechanism, sealing between the lower electrode plate and the container body is realized; and when resistance change is needed, the motor drives the upper electrode plate to move upwards in a gear transmission mode to ensure stable liftingof the electrode plate so as to realize quick resistance change.
Description
technical field [0001] The invention relates to the technical field of motor protection, in particular to a method for stably starting a mining motor. Background technique [0002] Permanent magnet synchronous DC motor starting technology generally includes positioning, asynchronous dragging, asynchronous dragging to sensorless speed closed-loop transition and position sensorless speed closed-loop control and other stages. After the asynchronous drag is over, especially when the load is heavy and the moment of inertia is small, when switching to closed-loop control, the motor speed decreases rapidly and cannot keep up with the target frequency, resulting in compressor drive failure; among them, [0003] The motor starter is a device used to assist the motor to start, so that the motor starts smoothly, has a small impact on the power grid, and can also realize soft parking, braking, overload and phase loss protection for the motor; it mainly includes liquid resistance starter...
Claims
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IPC IPC(8): H02P1/02H02P1/36
CPCH02P1/027H02P1/36
Inventor 常康华刘正
Owner 惠东嘉华材料有限公司