Square wave combining excitation starter/ electric generator control method

A technology of generator control and compound excitation, applied in AC motor control, control of generators, machines/engines, etc. through magnetic field changes, to achieve the effects of less hardware requirements, low system cost, and simple motor control

Inactive Publication Date: 2014-06-18
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current compound excitation motors are mostly sinusoidal electromotive force motors, and there is still room for improvement in terms of starting torque and system cost

Method used

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  • Square wave combining excitation starter/ electric generator control method
  • Square wave combining excitation starter/ electric generator control method
  • Square wave combining excitation starter/ electric generator control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 It is a structural diagram of a square wave compound excitation motor control system, which consists of a square wave compound excitation motor (1), an excitation adjustment unit (2), an inverter (3), an energy storage device (4) and a single-chip control unit (5).

[0021] The square wave composite excitation motor (1) has a trapezoidal back electromotive force waveform, and the winding is composed of a three-phase symmetrical armature winding and an excitation winding. The two excitation sources of permanent magnet excitation and electric excitation interact to realize electromagnetic energy conversion.

[0022] The input of the excitation adjustment unit (2) is the energy storage device (4), and the output is connected to the square wave compound excitation motor (1) through the excitation winding. An H-bridge or two controllable half-bridge elements form an H-bridge connection. Its function is to adjust the excitation current i by controlling the full-cont...

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PUM

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Abstract

The invention relates to a starter / electric generator control method, in particular to a square wave combining excitation starter / electric generator control method, and belongs to the field of automobile engine starting / electric generating. A square wave combining excitation motor system comprises a square wave combining excitation motor (1), an excitation regulating unit (2), an inverter (3), an energy storing device (4) and a single-chip microcomputer control unit (5). When an engine sends a starting request, the square wave combining excitation motor (1) enters the starting mode, a speed controlling or torque controlling method is adopted in the starting mode, and the engine is started quickly. When a vehicle is driven normally, the square wave combining excitation motor (1) enters an electricity generating mode, the inverter (3) serves as an uncontrollable rectifier bridge, a voltage outer ring and exciting current inner ring control method is adopted, the air gas field is adjusted by regulating an exciting current, and the output voltage is stabilized.

Description

technical field [0001] The invention relates to a starter / generator control method, in particular to a square wave compound excitation starter / generator control method, which can be applied to the field of automobile engine start / generator. Background technique [0002] Hybrid electric vehicles have both the advantages of low emissions of electric vehicles and the advantages of high specific energy of internal combustion engine vehicles, and have attracted more and more attention. The integrated starter / generator is a key component of hybrid electric vehicles, which can realize the functions of idle stop and quick start of the engine, so as to achieve the purpose of saving fuel consumption and reducing emissions. [0003] The existing automobile integrated starter / generator adopts a variety of motor types, each with its own advantages and disadvantages. For example: claw pole electric excitation AC motor has good mechanical strength and simple structure, but the effective m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08H02P9/30F02N11/00
Inventor 许家群杜怀颖
Owner BEIJING UNIV OF TECH
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