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EP0903832A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Generator for internal combustion engine

Assignee: Honda Motor Co Ltd
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Filing: 1998-01-13
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Granted: —
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Expires: 2018-01-13
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Abstract

Abstract A generator for an internal combustion engine which employs a induction motor as an alternator and enables generation of specified power regardless of the number of rotation of the internal combustion engine. The generated energy P of an alternator (1) is limited to a value not more than a upper limit value Pmax (Figure 5) and not less than a lower limit value Pmin (Figure 6) or to a target value Pc (Figure 7), regardless of the mechanical rotational speed N1 of a rotor 1R. Such control of the generated energy is realized by controlling the speed N2 of a rotating magnetic field electrically generated on a three-phase winding of the rotor 1R in response to the mechanical rotational speed N1 of the rotor 1R, so that the relative speed N of the rotation magnetic field generated by the rotor with respect to a stator coil is maintained at a speed not higher than an upper limit speed Nmax and not lower than a lower limit speed Nmin or at a target relative speed Nc.

Inventors

  • 👤 Hideaki-Kabushi. Honda Gijutsu Kenkyusho Arai
  • 👤 Kazuyuki Kabushi. Honda Gijutsu Kenkyusho KUBO
  • 👤 Seiichi Kabushi. Honda Gijutsu Kenkyusho KURODA
  • 👤 Tadashi Kabushi.Honda Gijutsu Kenkyusho FUJIWARA
  • 👤 Shinsuke Kabushi. Honda Gijutsu Kenkyusho NAGANO
  • 👤 Takuya Kabushi. Honda Gijutsu Kenkyusho FUJITA

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 17:09
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/26; H02P; H02P9/00; H02P9/14; H02P9/26; H02P9/30; H02P9/48

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 118 words
A generator system for an internal combustion engine, comprising: an induction machine which includes a rotor and a stator each having a polyphase winding, the rotor being rotated by transmitting a rotating motion of an internal combustion engine which is operated at variable speeds; rotating magnetic field generating means for electrically generating a rotating magnetic field in the rotor; and control means for controlling a speed of the rotating magnetic field in the rotor, the control means setting a target value of a relative speed of the rotating magnetic field with respect to the stator, and controlling a speed of the rotating magnetic field on the basis of the target value and a rotation speed of the rotor.
Claim 2
Dependent Claim 52 words
The generator system for an internal combustion engine according to claim 1, wherein the control means sets the target value so that a power generated by the induction machine is within a predetermined range, and controls a speed of the rotating magnetic field in accordance with a rotation speed of the rotor.
Claim 3
Dependent Claim 52 words
The generator system for an internal combustion engine according to claim 1, wherein the control means sets the target value so that a driving torque of the induction machine is within a predetermined range, and controls a speed of the rotating magnetic field in accordance with a rotation speed of the rotor.
Claim 4
Dependent Claim 58 words
The generator system for an internal combustion engine according to claim 3, wherein the control means sets the target value so that a power generated by the induction machine is kept at any one of a predetermined value or more, the predetermined value or less and the predetermined value, and controls the speed of the rotating magnetic field.
Claim 5
Dependent Claim 58 words
The generator system for an internal combustion engine according to claim 3, wherein the control means sets the target value so that a driving torque of the induction machine is kept at any one of a predetermined value or more, the predetermined value or less and the predetermined value, and controls the speed of the rotating magnetic field.
Claim 6
Dependent Claim 34 words
The generator system for an internal combustion engine according to claim 1, wherein the control means controls the target value of the relative speed as a function of a temperature of the induction machine.
Claim 7
Dependent Claim 63 words
The generator system for an internal combustion engine according to claim 1, wherein the control means sets a relative speed faster than a current relative speed as the target value if a charging quantity of a battery charged by the induction machine is insufficient, and sets a relative speed slower than the current relative speed if the charging quantity of battery is sufficient.
Claim 8
Dependent Claim 39 words
The generator system for an internal combustion engine according to claim 2, wherein the control means sets the target value so that the power generated by the induction machine is not less than power consumed by an electric load.
Claim 9
Dependent Claim 34 words
The generator system for an internal combustion engine according to claim 3, wherein the control means sets the target value in accordance with running states of vehicle which is equipped with the generator system.
Claim 10
Dependent Claim 38 words
The generator system for an internal combustion engine according to claim 9, wherein the control means sets the target value so that the driving torque of the induction machine increases when the vehicle is in a braking state.
Claim 11
Dependent Claim 38 words
The generator system for an internal combustion engine according to claim 9, wherein the control means sets the target value so that the driving torque of the induction machine decreases when the vehicle is in an accelerating state.
Claim 12
Dependent Claim 106 words
The generator system for an internal combustion engine according to claim 3, wherein when an electric load varies, the control means sets a temporary target value so that the electric load after varied is powered without causing a variation of the driving torque, and controls the speed of the rotating magnetic field accordingly, and thereafter, sets a final target value of the relative speed so that the electric load after varied is powered with a different driving torque from that corresponding to the temporary target value, and then, gradually carries out a power generation control with the variation of driving torque using the final target value.
Claim 13
Dependent Claim 33 words
The generator system for an internal combustion engine according to claim 12, wherein the final target value is within a range where the power generation efficiency of the induction machine is the maximum.

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