A stochastic analysis of technological violations related to submersible electric motors was performed, probabilistic-statistical models of time to failure for accepted conditional groups of submersible electric motors were constructed, a differential equation for the duration of the life cycle was obtained depending on the technical condition of electric motors, and residual resource assessment curves were constructed.
The results of computer analysis of normal steady-state and transient operating modes of SG with various self-excitation systems are presented. The processes in synchronous generators and self-excitation systems with bipolar pulse-width transducers in idle and 100% load mode are calculated, in the nominal mode of the synchronous generator, at 100% load reset. The result of the calculation of processes in an installation with a synchronous generator with a transformerless self-excitation system is also presented.
The analysis of technical solutions to ensure the required quality of power consumption and electromagnetic compatibility of frequency converters. It has been established that the use of passive filters does not allow for the provision of acceptable specific mass and weight parameters and the required quality of energy consumption. Active filters, despite the high quality of power factor correction, have quite complex control systems and the structure of the power section, and therefore a relatively high cost. It is proved that the most rational way of expanding the adjustment capabilities, improving the quality of energy consumption and electromagnetic compatibility for the frequency converter drives is the inclusion in its composition of the active power factor corrector based on the DC voltage converter.
It is proposed to use Bollinger indicators to identify negative impacts. The identification of negative effects during continuous technological processes is also facilitated by the collection of statistical data that can be stored without losing signal energy by means of wavelet compression. Thus, the oscillating Bollinger indicators show the full range of loads and their current deviation from the weighted average, that is, they are a tool for analyzing electrical loads in real time.
A comparative analysis of existing control systems for electric drives with asynchronous motors has been carried out. It is revealed that the greatest advantages for building an energy-efficient drive control system with an asynchronous traction motor is the DTC system, it has high performance, is less susceptible to inaccurate data on the observed parameters of the control object and disturbances in the process of coordinate regulation.
