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Modeling method for vehicle generator six-phase uncontrolled rectifier systems

A technology of rectification system and modeling method, which is applied in the direction of efficient vehicle charging, irreversible AC power input conversion to DC power output, collectors, etc., and can solve problems such as difficult to consider the operating conditions of the vehicle generator system

Active Publication Date: 2018-10-19
BOHAI UNIV
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  • Application Information

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Problems solved by technology

This method is difficult to consider various operating conditions of the vehicle generator system, such as single operation, parallel operation with battery, parallel operation with constant voltage source, avalanche diode rectifier bridge load shedding, etc. It is suitable for vehicle performance simulation Mathematical model of uncontrolled rectifier system

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  • Modeling method for vehicle generator six-phase uncontrolled rectifier systems
  • Modeling method for vehicle generator six-phase uncontrolled rectifier systems
  • Modeling method for vehicle generator six-phase uncontrolled rectifier systems

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[0159] Table 1 Simulation parameters

[0160]

[0161] When the current source is in steady state, the amplitude is 85A, the frequency is 900Hz, the load resistance is set to 0.08 ohms, the voltage drop of the power diode is 1V, and the simulation results of the uncontrolled rectification single operation mode of the vehicle generator are as follows: Figure 15-17 Shown, where Figure 15 Is the steady-state waveform of the six-phase current, Figure 16 Is the load voltage waveform, Figure 17 Is the load current waveform.

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Abstract

Disclosed is a mathematical modeling method for vehicle generator six-phase uncontrolled rectifier systems. The method includes the following steps: the establishment of a sign function and a calculating formula of voltages of all phases of neutral points, a mathematical modeling process of a vehicle generator uncontrolled rectifier system in an isolated operation mode, a mathematical modeling process of a vehicle generator uncontrolled rectifier system with a constant voltage source and in a parallel operation mode, a mathematical modeling process of a vehicle generator uncontrolled rectifiersystem with a storage battery, a mathematical modeling process of a vehicle generator uncontrolled rectifier system considering the characteristics of an avalanche diode and in an isolated operationmode, and a mathematical modeling process of a vehicle generator uncontrolled rectifier system considering the characteristics of an avalanche diode and with a storage battery. The method has high accuracy and reliability and is more beneficial to good operation analysis and comprehensive design of vehicle power generation systems. The modeling method is also suitable for vehicle generator triphase uncontrolled rectifier systems.

Description

Technical field [0001] The present invention relates to a modeling method for a six-phase uncontrolled rectifier bridge, and specifically relates to a modeling method for a six-phase uncontrolled rectifier system of a vehicle generator. Background technique [0002] With the increasing load of electrical appliances in modern cars, the power consumption is increasing rapidly, and the current typical value is 1.5kW~3kW. As one of the main power sources of the car, the generator supplies power to the electrical loads of the car and at the same time powers the battery. Due to the existence of brushes and mechanical commutator, DC generators not only limit the further improvement of motor overload capacity and speed, but also if it runs for a long time, it is necessary to maintain and replace the brushes and commutator frequently. In addition, because the loss exists on the rotor, it is difficult to dissipate heat, which limits the further improvement of the motor torque to mass rati...

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Application Information

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IPC IPC(8): H02M7/08H02K11/04H02J7/14
CPCH02J7/1423H02K11/048H02M7/08Y02T10/92
Inventor 巫庆辉侯元祥伦淑娴刘继行刘勇东郝立国王国东
Owner BOHAI UNIV