SU1158394A1 - Apparatus for controlling the voltage of traction generator of diesel locomotive - Google Patents

Abstract

A DEVICE FOR REGULATING A VOLTAGE TENSIONAL GENERATOR OF THE HEAT, containing a generator excitation current setting unit connected by an output to one of the inputs of the excitation control unit, the other input of which is connected to the output of the comparator unit connected by one input to the output of the integrator, and the other to the output of the voltage sensor and a boxing sensor connected to the input to the first input of the integrator, characterized in that, in order to ensure operational reliability, it is equipped with a unit for setting the intensity of change, Not one input is connected to the output of the generator voltage sensor, the other is combined with the input of the generator excitation current task unit, and the output is connected to the second input of the integrator, the third input of which is connected directly to the output of the sensor (L G generator alternator connected to the input sensor .boxing.

Description

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us.1 1 The invention relates to transport, in particular, to devices for regulating the voltage of a traction generator of vehicles, and can be used on powerful diesel locomotives. The purpose of the invention is to increase the reliability of the device. FIG. 1 shows a block diagram of the proposed device; Fig. 2 shows the dynamic characteristics of the generator. The device contains a block 1 of the specified excitation current, the output of which is co-dinine with one of the inputs of the block 2 of the excitation control of the traction generator. Sensor 3 voltage generator is connected to the inputs of the intensity setting unit 4, sensor 5 boxing integrator 6, comparison unit 7. The output of the intensity setting unit 4 is connected to another input of the integrator 6, and the second input is connected to the input of the excitation current setting unit. The output of the boxing sensor 5 is connected to the third input of the integrator 6, the output of which is connected to another input of the comparator unit 7, and the second input of the control unit 2 to the output of the comparator unit 7, The device operates as follows. Block 1 sets the excitation current to generate a signal that determines the excitation current of the traction generator. In general, block 1 specifies the signals from the respective sensors to generate and compare signals from settings and feedback on current, voltage, power T of the General Generator and if necessary, by other additional parameters. The excitation control unit 2 of the traction generator is the matching link between the reference unit 1 and the excitation winding of the generator and is designed to control the excitation current of the traction generator according to the signal of the reference unit 1. Voltage sensor 3 generates a signal proportional to the voltage of the traction generator. The integrator 6 serves to generate a signal that sets the tempo and. the nature of the change in generator voltage with time. The integrator in static mode has a coefficient of 42. Transmitter voltage signal unit equal to one. The rate of increase of the output signal integ-. Ratio 6 is proportional to the level of the output signal of the block 4 intensity setting. The intensity setting unit 4 is designed to generate a reference signal determining in the integrator 6 an output increase rate and, accordingly, a generator voltage depending on the frequency of rotation of the diesel shaft and the generator voltage which is used as a speed feedback. The signal at the blot 4 output. Depending on the frequency of rotation of the diesel shaft is limited by the zone between the characteristics I (Id - D), where d is the speed of rotation of the diesel; With a family of dynamic characteristics of the traction generator with the simultaneous slippage of all wheels of a locomotive and the absence of a signal from the detection of blocking (Fig 2), the sensor 5 of blocking serves to generate a signal of excessive sliding of the wheel pairs of the locomotive. The output signal of the blocking sensor 5 is linearly dependent on the generator voltage, which provides for the blocking correction of the rate of change of the output signal of the integrator 6 and, accordingly, the generator voltage according to the tf characteristic (Fig. 2). Comparison unit 7 is designed to compare instantaneous value the traction generator set by the integrator 6 with the actual voltage value measured by the sensor 3. The error signal is inputted to the excitation control unit 2. In this case, an additional parallel circuit for controlling the generator with respect to the first derivative of the voltage over time is formed. As the composition and the acceleration of the generator voltage increases, the output of the voltage sensor 3 changes. The integrator 6 generates a signal, which is the task of setting the maximum value of the voltage of the generator at each time instant. In comparison block 7, this signal is compared with the output signal of the voltage sensor 3. In the event of boxing

wheel pairs and generator voltage rise with a tempo exceeding the rate of increase of the signal at the output of integrator 6, the resulting signal at the output of the comparator unit 7 controls the excitation current of the traction. generator according to the law, providing the generator voltage variation with the tempo specified by the unit 4 of the intensity setting.

When the coupling of wheels to rails is restored, simultaneously with a decrease in the generator voltage value, the output signal of the integrator 6 changes,

When the locomotive is working at intermediate positions of the driver’s controller

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and the frequency of rotation of the diesel shaft is less than the voltage rise rate limited by the characteristic rf corresponding to yyyy (Fig. 2).

In the wheelset slip modes and the operation of the blocking detection sensor 5, the effect of its signal in the integrator 6 provides for the correction of the generator voltage variation rate in accordance with the x characteristic (Fig. 2).

When the locomotive moves with a steady-state generator voltage, the output signal of the integrator 6 is also stabilized.

rig 2

Claims (1)

A DEVICE FOR REGULATING THE VOLTAGE OF A DIESEL TRACER GENERATOR, comprising a generator excitation current setting unit connected to an output of one of the inputs of the excitation control unit, the other input of which is connected to the output of the comparison unit connected by one input to the output of the integrator and the other to the output of the voltage sensor, and a boxing sensor connected by an output to the first input of the integrator, characterized in that, in order to increase reliability in operation, it is equipped with a unit for setting the intensity of the voltage change, one the input of which is connected to the output of the generator voltage sensor, the other is connected to the input of the generator excitation current setting unit, and the output is connected to the second input of the integrator, _{Λ the} third input of which is connected directly — 3 directly with the output of the generator voltage sensor connected to the sensor’s V input boxing.f FIG. 1 cl 00 SaE With 4*