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Double-control rectifying vehicle alternating-current generator

An alternator and generator technology, which is applied in the control of generators, synchronous generators, and the conversion of AC power input into DC power output, etc., can solve problems such as low average efficiency, achieve improved efficiency, high conversion efficiency, and save automobiles. effect of fuel

Inactive Publication Date: 2010-06-09
陈国弟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this technical invention is to solve the problem of low average efficiency of the existing automobile alternator, and propose a technical scheme of dual-control rectification automobile alternator, which can automatically realize the high-turn winding work and low The switch between the number of turns winding work, or the switch between the star winding work and the delta winding work, makes the car alternator have higher efficiency in different working speed ranges

Method used

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  • Double-control rectifying vehicle alternating-current generator
  • Double-control rectifying vehicle alternating-current generator
  • Double-control rectifying vehicle alternating-current generator

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Embodiment 1

[0024] attached Figure 4 is attached image 3 The electrical schematic diagram of the first embodiment of the dual-control rectifier automobile alternator with the structure shown, in which: the structure and working principle of the regulator are the same as those of the existing automobile alternator. It collects the DC voltage output by the alternator , according to the change of the working speed and load of the generator, the excitation current of the excitation winding L3 is automatically adjusted, so that the generator can output stable DC power; requirements to determine, its output characteristics (current-speed characteristics) correspond to the attached figure 1 The curve I, L2 is a low-turn winding, its number of turns is determined according to the user's requirements for the high-speed current output capability of the generator, and its output characteristics correspond to the figure 1 Curve II, the external characteristic curves of windings L1 and L2 intersec...

Embodiment 2

[0026] attached Figure 5 is attached image 3 The electrical schematic diagram of the second embodiment of the dual-control rectifier automobile permanent magnet generator with the structure shown, wherein: the structure and working principle of the regulator are the same as those of the existing automobile alternator. Voltage, according to the change of the working speed of the generator and the load, the excitation current of the excitation winding L3 is automatically adjusted, so that the generator can output stable DC power; the two sets of windings in the stator have the same number of turns, L1 and L2. L2 is a delta connection, and the number of turns of the winding is determined by L1 meeting the user's requirements for the low-speed charging performance of the generator; the external characteristic curves of windings L1 and L2 intersect at point K, and the corresponding speed at point K is n k ; The rectifier diodes VD1~VD3 connected with the common cathode and the s...

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Abstract

The invention relates to a double-control rectifying vehicle alternating-current generator which mainly comprises a belt pulley, a front end cover, a front bearing, a stator, an excitation rotor, a rear end cover, a rear bearing, a double three-phase half-controlled type rectifier, a regulator, a conversion control circuit and a rear cover. The double-control rectifying vehicle alternating-current generator is characterized in that external characteristic curves of a high-turn winding L1 and a low-turn winding L2 intersect at a K point, and the rotating speed corresponding to the K point is nK; when the working rotating speed of the generator is below nK, the conversion control circuit turns off controlled silicons SCR4-SCR6 and sequentially triggers and conducts a controlled silicon with highest forward voltage after passing through a natural reversal point in controlled silicons SCR1-SCR3; and when the working rotating speed of the generator is above nK, the conversion control circuit turns off the controlled silicons SCR1-SCR3 and sequentially triggers and conducts a controlled silicon with the highest forward voltage after passing through the natural reversal point in the controlled silicons SCR4-SCR6. Thus the double-control rectifying vehicle alternating-current generator realizes the switching between the works of the winding L1 and the winding L2 along with the rotating speed of the generator, has the advantage of high average efficiency and is suitable for vehicles, tractors, tanks, and the like.

Description

technical field [0001] The present invention relates to automotive alternators. Background technique [0002] The stator of the existing automobile alternator has only one set of three-phase windings, which are connected in a star (Y-shaped) or delta (△-shaped) connection and then rectified by a three-phase bridge rectifier to output a stable DC power for the automobile. Appliances supply power and recharge batteries. Its output characteristics (current-speed characteristics) such as figure 1 As shown in the curve I, the speed n at the beginning of the output current in the curve O is called the zero current speed, while the rated speed n R Corresponding output current I R called the rated current. Zero current speed n of automotive alternator O Generally around 1000r / min, rated speed n R =6000r / min, n O and I R These are important indicators that must be met by automotive alternators. In order to meet the requirements of zero current speed, the number of turns of t...

Claims

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Application Information

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IPC IPC(8): H02K3/28H02K19/34H02P9/00H02M7/162
Inventor 陈国弟
Owner 陈国弟
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