POWER-GENERATION CONTROL APPARATUS FOR IN-VEHICLE ELECTRIC ROTATING MACHINE

• US 20100194355A1
• Filed: 05/28/2009
• Published: 08/05/2010
• Est. Priority Date: 01/30/2009
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Sasaki, Jyunya, Sumimoto, Katsuyuki, WADA, Noriyuki
• Granted Patent: US 8,063,499 B2
• Time in Patent Office: Days
• US Class Current: 322/22
• CPC Class Codes: B60L 50/15 with additional electric power supply with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61
• CPC Class Codes: H02J 7/1446 in response to parameters of a vehicle
• CPC Class Codes: H02P 2101/45 for motor vehicles, e.g. car alternators
• CPC Class Codes: H02P 9/48 Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle H02P9/04 - H02P9/46 take precedence
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

There can be performed the best power-generation control without enlarging the apparatus, deteriorating the reliability, and raising the cost. The power-generation control apparatus is provided with a power-generation amount suppression determination unit that determines whether or not to change a power-generation amount suppression level for suppressing the power-generation amount of the in-vehicle electric rotating machine, based on a present generation-voltage command value generated by a generated-voltage command unit and a generated-voltage past command value based on a past generated-voltage command value stored in a generated-voltage command storage unit, and that determines whether or not the power-generation amount suppression control is required, based on at least one of a past value and a present value of the generated-voltage command; therefore, there can be performed the best power-generation control without enlarging the apparatus, deteriorating the reliability, and raising the cost.

Claims

2. A power-generation control apparatus, for an in-vehicle electric rotating machine, that controls a power-generation amount of the in-vehicle electric rotating machine coupled with an internal combustion engine, the power-generation control apparatus comprising:

a generated-voltage command unit that generates a generated-voltage command value for the in-vehicle electric rotating machine;

a generated-voltage command storage unit that stores the generated-voltage command value generated by the generated-voltage command unit; and

a power-generation amount suppression determination unit that determines whether or not to change a power-generation amount suppression level for suppressing the power-generation amount, based on at least one of a present generation-voltage command value generated by the generated-voltage command unit and a generated-voltage past command value based on a past generated-voltage command value stored in the generated-voltage command storage unit,

wherein the power-generation amount suppression level is changed by altering a gradient for gradually increasing or gradually decreasing the power-generation amount.

3. A power-generation control apparatus, for an in-vehicle electric rotating machine, that controls a power-generation amount of the in-vehicle electric rotating machine coupled with an internal combustion engine, the power-generation control apparatus comprising:

a generated-voltage command unit that generates a generated-voltage command value for the in-vehicle electric rotating machine;

a generated-voltage command storage unit that stores the generated-voltage command value generated by the generated-voltage command unit; and

a power-generation amount suppression determination unit that determines whether or not to change a power-generation amount suppression level for suppressing the power-generation amount, based on at least one of a present generation-voltage command value generated by the generated-voltage command unit and a generated-voltage past command value based on a past generated-voltage command value stored in the generated-voltage command storage unit,

wherein the power-generation amount suppression level is changed by altering an operation-start determination threshold value for gradually increasing or decreasing the power-generation amount.

4. The power-generation control apparatus for an in-vehicle electric rotating machine according to claim 3, wherein the operation-start determination threshold value is set based on a rotation speed of the internal combustion engine or the in-vehicle electric rotating machine.

5. The power-generation control apparatus for an in-vehicle electric rotating machine according to claim 3, wherein the in-vehicle electric rotating machine is a coil-magnetic-field electric rotating machine, and the operation-start determination threshold value is set based on a magnetic-field current value of the in-vehicle electric rotating machine.

6. The power-generation control apparatus for an in-vehicle electric rotating machine according to claim 3, wherein the in-vehicle electric rotating machine is a coil-magnetic-field electric rotating machine, and the operation-start determination threshold value is set by changing a magnetic-field duty ratio for controlling the power-generation amount of the in-vehicle electric rotating machine.

13-1. The power-generation control apparatus for an in-vehicle electric rotating machine (102) according to claim 1, wherein the power-generation amount suppression level continues to be changed for a predetermined time period.