The Design And Realization Of Electrical Energy Control Technology

Asynchronous motor is the most widely used industrial and agricultural production electric drive equipment, the use of the process there are three problems: first, startup problems, full-pressure existing at the time the impact of starting torque of the drive system of the impact of the impact of starting current to the grid. Followed by energy-saving issues, asynchronous motor during operation a great saving of space, especially in the light-load power factor is low, low efficiency, electric heat seriously. The third is the safe operation of motor problems, off-phase, short circuit, overload and other serious failures in the operation of electric motors would cause great harm.In this paper, motor startup control of the development of the soft-start control system. For the motor during operation of the energy-saving issues, research and raised the minimum current point tracking technology. Through theoretical calculation and repeated tests showed that motor at all load conditions have their own corresponding current lowest point continue after this point, increase the voltage or lower voltage will cause the current increases. Some of the rated power motors, the minimum current trajectory curve can be measured in n discrete data (reflecting the relationship between power and current) fitted. By minimizing the current detection tracking means (different from the now popular voltage, current power factor detection), voltage regulator, coupled with self-developed software that continuously revised motor operating voltage, the motor current point at the top of the smallest reliable operation. Therefore, the motor no-load or light load, the controller built-in feedback circuit continuous measurement of the motor load at any time adjust the output voltage to achieve step-down energy-saving purposes.Solution pump surge phenomenon. In the pump to start, stop or fast opening and closing the valve when the flow rate will cause a sudden change in system pressure piping system caused by mutations occurring oscillation. Any pump systems have a built-in operating point, namely, pump curve and system curve intersect point, which is the pump's optimum operating point. Controller by adjusting the voltage output to control the motor acceleration and deceleration. Can effectively avoid the "surge" phenomenon.Designed a multi-function display pane. When starting a direct indication of any phase current values, run-time display load power, can be recycled shows three-phase current, voltage, phase current degree of balance. Failure to display fault codes and the parameters of failure, easy to find the cause and resolve the problem.In this paper, the work done is: energy-efficient induction motors through the technical analysis derived the need for energy-saving control technology development; pairs of energy-efficient induction motors has been analyzed by technical difficulties; given rated power under the minimum current point Sports curve, the minimum current and load tracking and monitoring, analysis and voltage control of the overall design of the program, and feature layers of the module has been designed, prepared by the tracking, monitoring and control module procedures.