Electric marine propulsion systems and methods of control
AssigneeBrunswick Corporation
InventorEric T. Surma
Life of this patent
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Abstract
An electric marine propulsion system for a marine vessel is provided. The system includes an electric motor configured to rotate a propulsor to propel the marine vessel and one or more controllers. The one or more controllers are configured to receive a propulsion demand and determine at least one of a maximum propulsion output, a maximum output period, a minimum propulsion output, and a minimum output period based on the propulsion demand. The one or more controllers are further configured to operate the electric motor by oscillating between the maximum propulsion output for the maximum output period and the minimum propulsion output for the minimum output period to generate an average thrust that is based on the propulsion demand.
Claims20
An electric marine propulsion system for a marine vessel, comprising:
- an electric motor configured to rotate a propulsor to propel the marine vessel;
- one or more controllers configured to:
- receive a propulsion demand;
- determine at least one of a maximum propulsion output, a maximum output period, a minimum propulsion output, and a minimum output period based on the propulsion demand;
- and
- operate the electric motor by oscillating between the maximum propulsion output for the maximum output period and the minimum propulsion output for the minimum output period to generate an average thrust that is based on the propulsion demand.
A method of controlling an electric marine propulsion system for a marine vessel having an electric motor configured to rotate a propulsor to propel the marine vessel, the method comprising:
- receiving a propulsion demand;
- determining at least one of a maximum propulsion output, a maximum output period, a minimum propulsion output, and a minimum output period based on the propulsion demand;
- and
- operating the electric motor by oscillating between the maximum propulsion output for the maximum output period and the minimum propulsion output for the minimum output period to generate an average thrust that is based on the propulsion demand.
Dependencies are inferred from the claim text.