Propulsion system and method for driving a vehicle
First Claim
1. A propulsion system, comprising:
- a boost converter comprising a high voltage side and a low voltage side;
a traction drive system coupled to the high voltage side of the boost converter;
an energy-type energy source coupled to the low voltage side of the boost converter;
a power-type energy source coupled to the low voltage side of the boost converter; and
an energy management system configured to control the boost converter when the traction drive system is in a motoring mode such that;
the energy-type energy source provides power to the traction drive system when a required power for the traction drive system is below a power threshold; and
both the energy-type energy source and power-type energy source provide power to the traction drive system when the required power for the traction drive system is above the power threshold, wherein providing power from both the energy-type energy source and power-type energy source comprises;
providing power from the energy-type energy source about equal to the power threshold and providing a remaining power of the required power from the power-type energy source when an allowed maximum power of the power-type energy source is greater than the remaining power; and
providing the allowed maximum power from the power-type energy source and providing the remaining power from the energy-type energy source when the allowed maximum power is less than the remaining power.
1 Assignment
0 Petitions
Accused Products
Abstract
A propulsion system includes a traction drive system, a boost converter, an energy-type energy source, a power-type energy source, and an energy management system. The boost converter includes a high voltage side and a low voltage side. The boost converter is coupled to the traction drive system on the high voltage side. The energy-type energy source is coupled to the boost converter on the low voltage side thereof. The power-type energy source is coupled to the boost converter on the low voltage side thereof. The energy management system is coupled to the boost converter and configured to control the energy-type energy source and the power-type energy source through the boost converter in at least two conditions during a motoring mode.
13 Citations
20 Claims
-
1. A propulsion system, comprising:
-
a boost converter comprising a high voltage side and a low voltage side; a traction drive system coupled to the high voltage side of the boost converter; an energy-type energy source coupled to the low voltage side of the boost converter; a power-type energy source coupled to the low voltage side of the boost converter; and an energy management system configured to control the boost converter when the traction drive system is in a motoring mode such that; the energy-type energy source provides power to the traction drive system when a required power for the traction drive system is below a power threshold; and both the energy-type energy source and power-type energy source provide power to the traction drive system when the required power for the traction drive system is above the power threshold, wherein providing power from both the energy-type energy source and power-type energy source comprises; providing power from the energy-type energy source about equal to the power threshold and providing a remaining power of the required power from the power-type energy source when an allowed maximum power of the power-type energy source is greater than the remaining power; and providing the allowed maximum power from the power-type energy source and providing the remaining power from the energy-type energy source when the allowed maximum power is less than the remaining power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15, 16, 17, 18, 19)
-
-
9. A method for providing power to a traction drive system from an energy-type energy source and a power-type energy source, the method comprising:
-
providing power to the traction drive system from the energy-type energy source when a required power for the traction drive system is below a power threshold; and providing power to the traction drive system from both the energy-type energy source and power-type energy source when the required power for the traction drive system is above a power threshold, wherein providing power from both the energy-type energy source and power-type energy source comprises; providing power from the energy-type energy source about equal to the power threshold and providing a remaining power of the required power from the power-type energy source when an allowed maximum power of the power-type energy source is greater than the remaining power; and providing the allowed maximum power from the power-type energy source and providing the remaining power from the energy-type energy source when the allowed maximum power is less than the remaining power. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
20. A propulsion system, comprising:
-
a boost converter comprising a high voltage side and a low voltage side; a traction drive system coupled to the high voltage side of the boost converter; a battery coupled to the low voltage side of the boost converter; an ultracapacitor coupled to the low voltage side of the boost converter; and an energy management system configured to control the boost converter when the traction drive system is in a motoring mode such that; the battery provides power to the traction drive system when a required power for the traction drive system is below a power threshold; and both the battery and ultracapacitor provide power to the traction drive system when the required power for the traction drive system is above the power threshold, wherein providing power from both the battery and ultracapacitor comprises; providing power from the battery about equal to the power threshold and providing a remaining power of the required power from the ultracapacitor when an allowed maximum power of the ultracapacitor is greater than the remaining power; and providing the allowed maximum power from the ultracapacitor and providing the remaining power from the battery when the allowed maximum power is less than the remaining power.
-
Specification