SU237230A1 - FAST WIND PUMP UNIT - Google Patents

Description

The invention relates to the field of veterinarians and can be applied to those of. households where wind pump units are used.

There are well-known wind pump units with electric transmissions, consisting of synchronous 1 and magnet, and electrical: x generators and centrifugal electric pumps of industrial frequency (50 Hz).

In such units, a direct connection of an electropump to an excitation generator and normal centrifugal pumps designed for operation at a constant rotational speed are applied. This leads to a low utilization of the power of the wind-wheel, which is associated with the need to ensure a steady direct start of the electric pump from a generator of comparable power and stable work} of the electric pump at a variable wind speed. Such wind-electric power units operate with variable wind speed in a mode that differs significantly from the optimum.

The proposed high-speed wind-pump unit ensures stable start-up of the electric pump 1With low wind speeds and voltage regulation at the generator terminals, close to the optimum and helps reduce the power of the coal column.

The unit consists of a high-speed propeller / ic speed limiting mechanism (Rotation, from the shaft of which the synchronous self-exciting generator 2 rotates

increased frequency. A high-speed electric pump consisting of a closed loop asynchronous motor 5 and a centrifugal pump 4 is permanently connected to the terminals of the generator.

In order to provide self-excitation of the generator and the frequency start of the electropump at low wind speeds, the excitation winding of the 5th gene;

three-phase relay 7, semiconductor diodes 8 and the carbon column 9 of the regulator voltage. i.

The control winding 10 of the voltage relay is connected to the generator terminals via a rectifier // and a special throttle element 12.

The use of relay 7, the winding of which is connected in parallel with the excitation winding 5 of the generator connecting the excitation circuit

when the pump starts directly to the generator and to the low voltage of the transformer 6 (after the pump drive motor has started to rotate), it starts and starts working with the electric wind speed, and also makes it possible to reduce the output power of the carbon regulators and reduce the requirements for semiconductor diodes excitation circuit.

Turning on the control winding W | relator voltage to the generator 2 through a special throttle and special throttle element 12 whose inductive resistance, proportional to the frequency of the current, causes the linear law of change of voltage

ln with frequency - and asynchronous // n

npifi motor magnetic flux stability, i.e., in the mode, by blocking to the optimum.

High-speed wind pump unit operates as follows.

At the time of launching the wind wheel, the electric motor 3.cr of the pump inlet is connected to the terminals of the generator 2, the exciter winding (5 of which B1 is connected to the generator terminals through the carbon pole 5, semiconductor diodes S and the normally closed relay contacts 7. The generator increases the voltage of the generator up to the value required for the start-up of the electric motor, which starts the run-up. An increase in the rotational speed of the electric motor is accompanied by an increase in the total resistance of its windings and a further increase in voltage on the clamp generator max and on the winding (Excitation.

The relay 7, when the voltage on the winding reaches the value of the operating voltage, switches the generator excitation circuit to the low voltage of the transformer 6. This reduces the voltage on the semiconductor diodes 8 and the carbon pole 9 and reduces the power of the coal pole. When the unit operates with a variable speed of rotation of the wind-wheel and generator of the control coil, the carbon regulator receives power through the throttle element 2, which provides an increase in voltage at a lower frequency and a decrease at increased frequency, which provides a gentle linear characteristic of voltage variation with frequency and effective use of wind turbine in a wide range of rotational speed.

g subject invention

A high-speed wind-pump unit consisting of a high-speed propeller, a three-phase synchronous self-exciting generator with a coal regulator m excitation, a three-phase relay, rectifiers, an autotransformer, an electric pump permanently connected to the clamps of the generator-orator, characterized by themes, non-woofers, autotransformer, electric pump, permanently connected to the clamps of the generator-orator, characterized by themes, non-woofers, autotransformer, electric pump, permanently connected to the terminals of the generator-orator, characterized by themes, non-woofers, autotransformer, electric pump, permanently connected to the terminals of the generator-oracle, characterized by non-woofer transformer, autotransformer, electric pump, permanently connected to the clamps of the generator-orax, featuring themes, auto-transformer, electric pump, permanently connected to the clamps of the generator-oracle, featuring themes that are different, and with the same circuitry. ensuring the operation of the unit in the optimal mode with a wide range of wind speeds and reducing the cost of the controller, the generator excitation winding when the electric pump is started is connected to its terminals through you relay and normally closed relay contacts,

0 and after the end of the start-up through normally open relay contacts and auto-transformer tap-off, the relay coil is connected in parallel with the generator excitation winding, and the control winding of the carbon regulator is connected to the generator terminals via a choke element and an auxiliary rectifier.

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