CONTROL SYSTEM AND REGULATIONS OF ELECTRIC DRIVES OF IMMERSIBLE PUMP Russian patent published in 2008 - IPC H04L29/00 H02H7/08 

FIELD: electricity; engines and pumps.

SUBSTANCE: control system and regulation of the electric drive of an immersible pump contains a power unit, a receiving and transmitting circuit and a communication network, the receiving circuit contains a series-connected transformer, an input voltage amplifier, the first band-pass filter, the frequency detector, the block of interruptions, the first microcontroller which through the first port with a galvanic outcome is connected to a communication network. The transmitting circuit contains the first microcontroller, series-connected digital-analog converter and the second band-pass filter, the output amplifier of power, the communication transformer, and the communication network through the unit of differential amplifiers on the input is connected to the second microcontroller, whose first input-output through the second port with a galvanic outcome is connected with the communications network, and its second input-output through the galvanic separation is connected with the first microprocessor, first and second input are connected with the corresponding outputs of the frequency detector, whose third output is connected to the input of the block of interruptions whose output is connected to the input of the first microcontroller, the submersible part is the source of the information, a line for data exchange is a double-conductor cable, which connects the ground high-voltage rectifier whose load is the high-voltage inverter of the submerged pump with condensers of the filter on the output from the rectifier and an input from the inverter of the ambient temperatures. In this case for the transmission of numerical data on inductive coupling of the ends of one of branches of power twin cable are a primary winding of the coupling transformer, the secondary winding of the coupling transformer in the receiving circuit is connected with the outputs of the input voltage amplifier, and in the output of the output amplifier of power.

EFFECT: increase in the reliability of the code information interchange between ground and immersion parts of the control system and regulation by the power cable of the pump in the conditions.

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