SU474093A1 - Device for regulating the frequency and active power of the primary engine of a ship generating unit - Google Patents

Description

speeds of rotation of the drive engine; in fig. 2 is a block diagram of a controller using an immersion counter as an integrator.

The control object is a generator set consisting of generator 1 and prime mover 2, which has its own rotation speed regulator, which affects the fuel supply system 3. The frequency and active power regulator has in general three control loops: load, integrated frequency control loop, and active load distribution circuit between parallel units operating. The presence of a rotational speed control loop for a load consisting of a load sensor 4, an amplifier 5 and an electromechanical transducer (electromagnet) 6 is generally not necessary, therefore this circuit is shown in dashed lines on the block diagrams. The integrated frequency control loop consists of a pulse frequency sensor 7, whose output signal through the switching unit (integrator) 8 is fed to the input of the amplifier 9 of the servo motor 10. The switching unit 8 eliminates the connection of the output signal of the frequency sensor to the input of the servo motor during single operation of the unit and during parallel operation with other units when this unit is basic. In the case of parallel operation, when the unit is slave, the switching unit provides a signal to the input of amplifier 9 proportional to the difference of the active loads in parallel to the working units. Arranging the signal by the difference of the active, loadings of the paramodic ic 1101 using a measurement circuit consisting of load sensors II and 12 and a frequency-pulse modulator 13. The load sensors are connected to the subtraction circuit, the sensor 1I being part of the controller of this unit, and sensor 12 belongs to the controller of a parallel operating unit. The assignment of the m. Modulator 13, as already indicated, is the conversion of a continuous signal, which comes from a circuit measuring the difference of active loads into a pulse frequency of constant duration and amplitude.

When used as an integrator, not a servomotor, but a reverse

of the NMR pulse, it is not necessary to use the amplifier 9 and the servo motor 10. Then the emulsified signal of the difference between active loads or frequency deviation from the nominal value is fed to the input of the reversible pulse counter 14, the output of which is connected to the input of the amplifier 5 of the electromechanical converter 6 (see Fig. 2). In the presence of a control loop

speed but the load is most rational to use one summing amplifier and one electromagnet for all control loops (see fig. 2).

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Subject invention

A device for controlling the frequency and active power of the primary engine of the ship generating unit, operating in parallel with other generating units, contains a circuit for measuring the difference between the active loads of the generators and a pulse sensor frequency deviation from the setpoint, as well as an integrator acting on the fuel supply system of the drive engine of the generator, different In order to increase the accuracy of the distribution

active loads in parallel with working units, it is equipped with a frequency-pulse modulator, the input of which is connected to the output of the circuit for measuring the difference of active loads, and the output is connected to the input of the integral a.

figure 1

Fig z