Hybrid electric propulsion power supply

Patent metadata

Field	Value
Publication number	US-10800246-B2
Application number	US-201816216480-A
Country	US
Kind code	B2
Filing date	Dec 11, 2018
Priority date	Dec 11, 2018
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A hybrid propulsion system can include an electric motor configured to convert electrical energy into motion, a battery configured to store electrical energy and operatively connected to the electric motor to provide a battery output to the electric motor and a generator configured to convert non-electrical energy into electrical energy, the generator operatively connected to the electric motor to provide a generator output to the motor simultaneously with the battery output. The system can include a controller operatively connected to the generator and configured to control the generator output of the generator as a function one or more of a state of the battery or the battery output.

First claim

What is claimed is:

1. A hybrid propulsion system, comprising:
an electric motor configured to convert electrical energy into motion;
a battery configured to store electrical energy and operatively connected to the electric motor to provide a battery output to the electric motor;
a generator configured to convert non-electrical energy into electrical energy, the generator operatively connected to the electric motor to provide a generator output to the motor simultaneously with the battery output; and
a controller operatively connected to the generator and configured to control the generator output of the generator as a function one or more of a state of the battery or the battery output, wherein the controller is configured to match at least one quality of the generator output to a same at least one quality of the battery output, wherein the at least one quality is voltage such that the controller is configured to match a generator output voltage to a battery output voltage, wherein the generator includes a permanent magnet generator and an engine operatively connected to the permanent magnet generator, wherein the controller is configured to control a speed of the engine to control the generator output to match the voltage, wherein both the battery and the generator are directly connected to the electric motor such that the system does not include any power electronics between the battery and the electric motor or the generator and the electric motor.

2. The system of claim 1 , further comprising a state of charge sensor configured to sense a state of charge of the battery.

3. The system of claim 2 , wherein the controller is configured to receive a signal from the state of charge sensor and control a generator voltage and/or a generator power of the generator based on stored data that correlates state of charge to a battery voltage and/or battery power.

4. The system of claim 3 , wherein the generator is a permanent magnet generator, and wherein the controller is configured to control a speed of the generator to control the generator voltage and/or generator power based on stored generator data that correlates generator speed to generator voltage.

5. The system of claim 1 , further comprising a battery output sensor disposed between the battery and the electric motor, and a generator output sensor disposed between the generator and the electric motor, wherein the controller is configured to receive signals from both the battery output sensor and the generator output sensor to control the generator output with a feedback loop to match the at least one quality.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Spierling Todd A

Classifications

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• B60L2240/427

  Voltage · CPC title

• B60K6/26 Primary

  characterised by the motors or the generators · CPC title

• B60L50/12

  using AC generators and DC motors · CPC title

• B64D27/33 Primary

  Hybrid electric aircraft · CPC title