Electrified vehicle and method of controlling same
AssigneesHyundai Motor Company, Kia Corporation
InventorsHo Sun JANG, Jang Yoon JEONG, Jin Wook KANG
Life of this patent
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Abstract
An electrified vehicle includes a motor having a plurality of windings, a first inverter, a main battery, and a controller configured to perform linearization control on a voltage modulation index, so as to limit a change rate of the voltage modulation index during switching between a first driving mode and a second driving mode while an auxiliary battery is mounted.
Claims20
An electrified vehicle capable of mounting an auxiliary battery, the electrified vehicle comprising:
- a motor having a plurality of windings;
- a first inverter having a plurality of direct current (DC) terminals and including a plurality of legs connected to first ends of each of the plurality of windings;
- a main battery connected to the plurality of DC terminals;
- and
- a controller configured to perform linearization control on a voltage modulation index while the auxiliary battery is mounted to limit a change rate of the voltage modulation index serving as a basis for an electric current command for the motor during switching between a first driving mode and a second driving mode;
- wherein the first driving mode is configured to drive the motor in a state where the auxiliary battery and the motor are electrically disconnected from each other;
- and
- wherein the second driving mode is configured to drive the motor in a state where the auxiliary battery is electrically connected between one end of the plurality of DC terminals and second ends of each of the plurality of windings.
A method of controlling an electrified vehicle comprising a motor having a plurality of windings, a first inverter having a plurality of direct current (DC) terminals and including a plurality of legs connected to first ends of each of the plurality of windings, and a main battery connected to the plurality of DC terminals, the electrified vehicle being capable of mounting an auxiliary battery, and the method comprising:
- generating, by a controller, an electric current command for the motor based on a voltage modulation index;
- and
- performing, by the controller, linearization control on the voltage modulation index while the auxiliary battery is mounted to limit a change rate of the voltage modulation index during switching between a first driving mode and a second driving mode;
- wherein the first driving mode is configured to drive the motor in a state where the auxiliary battery and the motor are electrically disconnected from each other;
- and
- wherein the second driving mode is configured to drive the motor in a state where the auxiliary battery is electrically connected between the plurality of DC terminals to which the main battery is connected and the plurality of windings.
Dependencies are inferred from the claim text.