Asynchronous-motor frequency conversion speed regulation and control system
A frequency conversion speed and control system technology, applied in the electrical field, can solve the problems of slow speed regulation and unstable control, and achieve the effects of cost reduction, production cost reduction, and application scope expansion.
Inactive Publication Date: 2017-03-08
史树元
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Problems solved by technology
The existing motor speed regulation system has the problems of slow speed regulation process and unstable control
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[0010] As shown in the figure, the present invention includes three-phase rectification module, IGBT-IBM intelligent power module, motor SPWM waveform generator, variable frequency current detection and overcurrent short circuit protection device, single chip microcomputer minimum application system, A / D conversion module and water pressure detection The module is characterized in that: the three-phase rectifier module is connected to the IGBT-IBM intelligent power module, the IGBT-IBM intelligent power module is connected to the motor, the frequency conversion current detection and the overcurrent short circuit protection device are connected to the water pressure monitoring module through the A / D conversion module; SPWM waveform Generator SA4828 is connected with IGBT-IBM intelligent power module.
[0011] As a preferred solution of the present invention, the three-phase rectification module and the frequency conversion current detection and overcurrent short circuit protecti...
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An asynchronous-motor frequency conversion speed regulation and control system belongs to the electricity field and the invention especially relates to an improved version of the asynchronous-motor frequency conversion speed regulation and control system. By using the asynchronous-motor frequency conversion speed regulation and control system provided in the invention, an adjusting speed is fast and control is stable. The system comprises a three-phase rectification module, an IGBT-IBM intelligent power module, a motor SPWM waveform generator, a frequency conversion current detection and over-current short circuit protection apparatus, a minimum single-chip microcomputer application system, an A / D conversion module and a water pressure detection module. The three-phase rectification module is connected to the IGBT-IBM intelligent power module. The IGBT-IBM intelligent power module is connected to a motor. The frequency conversion current detection and over-current short circuit protection apparatus is connected to the water pressure detection module through the A / D conversion module. The SPWM waveform generator SA4828 is connected to the IGBT-IBM intelligent power module.
Description
technical field [0001] The invention belongs to the field of electricity, and in particular relates to an improvement of an asynchronous motor frequency conversion speed control system. Background technique [0002] Three-phase AC asynchronous motors are widely used in equipment such as machinery, pumps, conveyor belts, air conditioners and blowers. In order to make the equipment run stably, a prominent problem to be solved is to carry out stepless speed regulation, especially in automatic control systems. The problem of speed regulation is more prominent. The existing motor speed regulation system has the problems of slow speed regulation process and unstable control. Contents of the invention [0003] The present invention aims at the above problems and provides a variable frequency speed control system for asynchronous motors with adjustable speed block and stable control. [0004] In order to achieve the above object, the present invention adopts the following techni...
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IPC IPC(8): H02P21/00H02P27/08
Inventor 史树元
Owner 史树元