Supercharge Your Innovation With Domain-Expert AI Agents!

Alternative current generator system for vehicle

An alternating current, generator technology, applied in synchronous motors with stationary armatures and rotating magnets, electrical components, electromechanical devices, etc., to solve problems such as waste, short circuit regulator circuits, and reduced operating efficiency of alternating current generators

Active Publication Date: 2013-10-16
DENSO CORP
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this generated AC exceeds the level required by the vehicle and it becomes unnecessary to charge the battery, it is short-circuited and outright wasted by the regulator circuit
Although high power is generated, the friction (rotational resistance, etc.) that prevents the rotor from rotating increases
Therefore the operating efficiency of the alternator will be reduced

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alternative current generator system for vehicle
  • Alternative current generator system for vehicle
  • Alternative current generator system for vehicle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0028] see figure 1 , 2 and 3, the alternator 1 has an outer rotor 2 and a stator 3. The outer rotor 2 has a plurality of permanent magnets 22 (22N and 22S) arranged in the circumferential direction C such that N-pole magnetic field generating portions 22N and S-pole magnetic field generating portions 22S of the permanent magnets alternate with each other. The stator 3 is located radially inward of the outer rotor 2 and has a central core portion 31 on which a plurality of magnetic poles 30 protruding in a radially outward direction are arranged in the circumferential direction C. Each pole 30 has a pole core portion 32 and a coil 4 which is part of a coil group and is referred to as a winding portion. The coil 4 is wound around the pole 30 in opposite directions between right-handed and left-handed with respect to the pole core portion 32 so that the direction of the winding becomes opposite to the direction of the winding of the adjacent pole 30 . Since the N-pole magneti...

no. 2 example

[0067] According to the second embodiment, switching between the full generating operation state W1 of the alternator 1 and the partial generating operating state W2 is performed in another scheme than that of the first embodiment.

[0068] Such as Figure 14 As shown in , the predetermined acceleration time transition speed A for shifting from the full power generation operation state W1 to the partial power generation operation state W2 is set within the pre-engagement speed range R1 between the disengagement speed N1 and the engagement start speed N2. The predetermined deceleration-time switching rotational speed B for transitioning from the part-generating operation state W2 to the full-generating operation state W1 is set lower than the predetermined acceleration-time switching rotational speed A in the pre-coupling rotational speed range R1. Alternatively, the rotation speed B may be set slightly lower than the disengagement rotation speed N1. The second embodiment is a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an alternative current (AC) generator for vehicle in response to a command from an engine control device under the control of a switching control unit, an operation state is switching between a full-generation operation state for enabling all coils to generate AC and a partial generation operation state for enabling partial coil to generate the AC; when a rotary speed of an external rotor is raised, the full-generation state is switched into the partial generation state under accelerated time switching rotary speed; when the rotary speed of the external rotor is reduced, the partial generation state is switching into the full-generation state in a decelerated time conversion rotary speed; and the accelerated time switching rotary speed is more than the decelerated time conversion rotary speed.

Description

technical field [0001] The present invention relates to an alternating current generator system configured to generate single-phase or multi-phase alternating current. Background technique [0002] An alternator for a vehicle such as a motorcycle has an outer rotor and a stator. The outer rotor has a plurality of permanent magnets arranged in the circumferential direction, so that the S poles and N poles of the permanent magnets are alternate. The stator is located radially inside the outer rotor and has a plurality of pole cores around which coils are alternately wound in opposite directions. Since the magnetic field generated by the rotating S pole and N pole of the permanent magnet is alternately applied to each pole core portion, the coil generates an AC voltage when, for example, the rotor is rotated by the rotational driving force of the internal combustion engine of the vehicle. [0003] In addition, the following Patent Document 1 discloses, for example, an output ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/22H02K7/10H02K3/04H02K3/28
Inventor 小薮忠胜大石知宏
Owner DENSO CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com