Excitation control system for hybrid power system generator and method thereof

A hybrid power system and excitation control technology, which is applied in the direction of controlling generators through magnetic field changes, can solve the problems of inability to precisely control the power distribution of internal combustion generator sets and power battery packs, the overall operating efficiency of internal combustion engines, and the increase in volume and weight. Improve the average efficiency, reduce the cost and volume weight, the effect of fast response

Active Publication Date: 2014-01-22
中国船舶重工集团公司第七一二研究所
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Problems solved by technology

However, the discharge capacity of the traction battery pack has a nonlinear relationship with the terminal voltage, and this traditional control method cannot accurately control the power distribution between the internal combustion generator set and the traction battery pack
In order to ensure the traction pow

Method used

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  • Excitation control system for hybrid power system generator and method thereof
  • Excitation control system for hybrid power system generator and method thereof
  • Excitation control system for hybrid power system generator and method thereof

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Embodiment

[0024] The present invention includes a power regulator, a voltage regulator, a data acquisition module for system parameters such as voltage and current, a reference value calculation module for power, voltage and current, a PWM pulse generation module, a limiter module, and a main unit of an uncontrolled rectification+PWM chopper topology.

[0025] Its hardware circuit adopts uncontrolled rectification + PWM chopper topology, the main power supply comes from the auxiliary winding of the generator or an external independent voltage, the output of the main power is connected to the excitation winding of the generator or the excitation winding of the generator exciter, and its detection interface includes the generator Phase voltage, phase current, battery voltage and current, etc. Its control interface includes 2 digital inputs, 2 digital outputs, 2 analog inputs and 2 analog outputs. Its communication ports include RS485 interface, CAN interface and RS232 interface.

[0026...

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Abstract

The invention relates to an excitation control system for a hybrid power system generator and a method thereof. A power voltage dual-closed-loop control way is adopted; the generator works in a constant-power voltage-limiting mode by adjusting the generator current, so that power distribution control between an internal combustion generator set and a power battery pack in a series direct-coupled oil-power hybrid power system is realized, the floating charge voltage and maximum charging current of the power battery pack are limited, and the safety and the cycle lives of power storage batteries are ensured. The excitation control system has the advantages that 1, the absolute values and change rates of errors are detected according to the stable state and dynamic response situation of a controlled system; 2, the excitation current of the generator is controlled according to an entire controller, so that optimal power distribution of a front power chain is realized; the internal combustion generator set and the power battery pack with minimum power are configured, so that the manufacturing cost, size and weight of equipment are reduced greatly, and the average efficiency of an internal combustion engine is increased.

Description

technical field [0001] The invention relates to a generator excitation control system and a method thereof, in particular to a hybrid power system generator excitation control system and a method thereof. Background technique [0002] In recent years, with the increasingly prominent energy and environmental issues, "energy saving and emission reduction" has become a development concept that countries all over the world have to choose. The research and productization of new energy vehicles are in the ascendant, among which hybrid vehicles are an important branch. The serial oil-electric hybrid power system composed of internal combustion generator set and traction battery pack is widely used due to its simple system, relatively mature technology, wide application range, and the engine working state is not affected by the driving conditions of the vehicle. In this type of system, the electrical coupling between the power battery pack and the diesel generator set has two method...

Claims

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Application Information

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IPC IPC(8): H02P9/14H02P9/30
Inventor 槐博超姬凯徐明李帆许晓晖
Owner 中国船舶重工集团公司第七一二研究所
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