Excitation Control Method for Diesel Multiple Unit Generator

A technology of excitation control and generator, which is applied in the direction of controlling the generator, controlling the generator through the change of the magnetic field, and controlling the system, etc. It can solve problems such as auxiliary converter shutdown, and achieve the effect of suppressing oscillation and stabilizing the output voltage

Active Publication Date: 2022-04-12
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a generator excitation control method for a diesel train set to solve the problem in the prior art caused by the undervoltage of the output voltage of the generator when the traction high level is reduced to the low level. The problem of shutdown due to undervoltage

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  • Excitation Control Method for Diesel Multiple Unit Generator
  • Excitation Control Method for Diesel Multiple Unit Generator
  • Excitation Control Method for Diesel Multiple Unit Generator

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Embodiment Construction

[0044] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0045] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0046] figure 1 It is a schematic flow chart of the excitation control method for the generator set of the diesel train set provided by the embodiment of the present invention. The execution body of the method is the excitation controller. figure 1 As shown, the method incl...

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Abstract

The present invention provides a generator excitation control method for a diesel multiple unit, comprising: when the adjustment interval of the excitation control is the first adjustment interval, control according to the first PI parameter, so that the output voltage of the generator is equal to that of the traction support The capacitor pre-charge voltage is equal; when it is the second adjustment interval, obtain the output target voltage of the generator; if the traction level is reduced, according to the current traction level and the traction level to be reduced to, determine the desired voltage including multiple generators Voltage cycle, in each iterative calculation, according to the current cycle corresponding to the generator expected voltage, generator actual output voltage and the last second PI parameter and the current speed of the diesel engine, determine the first iteration of this iteration Two PI parameters, and according to the second PI parameter of this iteration, determine the current generator excitation output variation, and control the generator according to the current generator excitation output variation.

Description

technical field [0001] The invention relates to the technical field of internal combustion train control, in particular to an excitation control method for a generator of a diesel train set. Background technique [0002] As the power source of the traction system of the internal combustion EMU, the quality of the output voltage of the generator directly affects the operation performance of the traction system, while the inductance characteristics of the generator excitation winding and the large time-delay characteristics of the secondary excitation have brought great difficulties to the excitation control. Therefore, the excitation control of generators has always been a hot issue in the field of diesel multiple units. The excitation control of traditional diesel train generators usually uses a proportional integral controller (PI) method to adjust the excitation current according to the deviation between the actual output voltage of the generator and the target voltage, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/04H02P9/14H02P9/10H02P9/00
CPCH02P9/04H02P9/14H02P9/10H02P9/006
Inventor 王懂马法运张春磊潘景宇林显琦杨志浩
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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