Motor-generator system

• US 10,245,971 B2
• Filed: 03/06/2017
• Issued: 04/02/2019
• Est. Priority Date: 03/06/2017
• Status: Active Grant

• Current Assignee: Gates Corporation (Gates Industrial Corp. Plc)
• Original Assignee: Gates Corporation (Gates Industrial Corp. Plc)
• Inventors: Liu, Keming
• Primary Examiner(s): Meyer, Jacob B
• Application Number:
  US15/451,052
• Publication Number:
  US 20180251041A1
• Time in Patent Office: 757 Days
• CPC Class Codes: B60L 15/007 Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: F02B 67/06 driven by means of chains, belts, or like endless members
• CPC Class Codes: F02D 2200/101 Engine speed
• CPC Class Codes: F02D 2250/24 by using an external load, e.g. a generator
• CPC Class Codes: F02D 31/001 Electric control of rotation speed
• CPC Class Codes: F02D 41/062 for starting F02D41/061 takes precedence
• CPC Class Codes: F02N 11/04 the motors being associated with current generators
• CPC Class Codes: F02N 15/08 the gearing being of friction type
• CPC Class Codes: H02P 29/40 Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

Abstract

A motor-generator system comprising an internal combustion engine, a motor-generator in driven engagement with the internal combustion engine by an endless belt, the motor-generator, a controller detecting a speed signal of the internal combustion engine, a driver input signal, a battery state signal and a motor-generator signal, the motor-generator operable to provide a motoring torque or a load torque to the internal combustion engine at a predetermined frequency according to a controller command, and the controller controlling the motor-generator torque at a frequency greater than 1 Hz such that when the internal combustion engine accelerates the motoring torque is applied to speed the motor-generator rotation and when the internal combustion engine decelerates the load torque is applied to slow motor-generator rotation such that motor-generator rotation is controlled to attenuate a system vibration.

Claims

1. A motor-generator system comprising:

an internal combustion engine;

a motor-generator in driven engagement with the internal combustion engine by an endless belt, the motor-generator comprising;

a controller detecting a speed signal of the internal combustion engine, a driver input signal, a battery state signal and a motor-generator signal;

the motor-generator operable to provide a motoring torque or a load torque to the internal combustion engine at a predetermined frequency of rotary vibration according to a controller command; and

the controller controlling the motor-generator torque at a frequency greater than 1 Hz such that when the internal combustion engine accelerates, the motoring torque is applied to speed the motor-generator rotation, and when the internal combustion engine decelerates, the load torque is applied to slow motor-generator rotation such that motor-generator rotation is controlled to attenuate a system vibration.

2. The motor-generator system as in claim 1 further comprising a tensioner engaging two spans of the endless belt.

3. The motor-generator system as in claim 2, wherein the coupled tensioner is mounted to the motor-generator.

4. The motor-generator system as in claim 1, wherein the controller also receives a throttle position signal.

5. The motor-generator system as in claim 1, wherein the frequency is less than approximately 50 Hz.

6. The motor-generator system as in claim 1 wherein the frequency is less than approximately 30 Hz.