ENGINE-GENERATOR CONTROL METHOD AND SERIES HYBRID ELECTRIC COMBAT MANEUVERING SYSTEM USING THE SAME
First Claim
1. An engine-generator control method for controlling an engine-generator to supply power to a series hybrid electric combat maneuvering system having a battery and a drive motor, comprising:
- (a) detecting an acceleration pedal displacement signal and a brake pedal displacement signal, and calculating a requested power that is total power of the drive motor requested by a driver;
(b) assuming power values of the engine-generator at equidistant intervals from minimum power to maximum power of the engine-generator;
(c) calculating a power value of the battery required to satisfy total power of the drive motor requested by the driver, using the assumed power values of the engine-generator and the requested power;
(d) calculating an efficiency value of the engine-generator using an efficiency map of the engine-generator, and calculating an efficiency value of the battery using an efficiency map of the battery as a function of the battery power and a measured State Of Charge (SOC) of the battery;
(e) calculating system efficiencies of the combat maneuvering system, for every assumed power value of the engine-generator at the equidistant intervals, using the efficiency of the engine-generator and the efficiency of the battery; and
(f) selecting an assumed power of the engine-generator, obtained for a highest system efficiency, and controlling the engine-generator at the selected assumed power.
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Accused Products
Abstract
An engine-generator control method and a series hybrid electric combat maneuvering system using the control method are provided. The series hybrid electric combat maneuvering system includes a drive motor connected to an axle via a speed reducer, a Motor Control Unit (MCU) configured to control the drive motor, an engine-generator configured to generate electric power, a Generator Control Unit (GCU) configured to control the engine-generator, a high voltage battery, a Battery Management System (BMS) configured to manage the high voltage battery, and a Hybrid Control Unit (HCU) configured to control the MCU, the GCU, and the BMS.
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Citations
7 Claims
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1. An engine-generator control method for controlling an engine-generator to supply power to a series hybrid electric combat maneuvering system having a battery and a drive motor, comprising:
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(a) detecting an acceleration pedal displacement signal and a brake pedal displacement signal, and calculating a requested power that is total power of the drive motor requested by a driver; (b) assuming power values of the engine-generator at equidistant intervals from minimum power to maximum power of the engine-generator; (c) calculating a power value of the battery required to satisfy total power of the drive motor requested by the driver, using the assumed power values of the engine-generator and the requested power; (d) calculating an efficiency value of the engine-generator using an efficiency map of the engine-generator, and calculating an efficiency value of the battery using an efficiency map of the battery as a function of the battery power and a measured State Of Charge (SOC) of the battery; (e) calculating system efficiencies of the combat maneuvering system, for every assumed power value of the engine-generator at the equidistant intervals, using the efficiency of the engine-generator and the efficiency of the battery; and (f) selecting an assumed power of the engine-generator, obtained for a highest system efficiency, and controlling the engine-generator at the selected assumed power. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A Series hybrid electric combat maneuvering system, comprising:
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a drive motor connected to an axle via a reduction gear; a Motor Control Unit (MCU) configured to control the drive motor; an engine-generator configured to generate electric power; a Generator Control Unit (GCU) configured to control the engine-generator; a high voltage battery; a Battery Management System (BMS) configured to manage the high voltage battery; and a Hybrid Control Unit (HCU) configured to control the MCU, the GCU, and the BMS, wherein the HCU is configured to; detect an accelerator pedal displacement signal and a brake pedal displacement signal, and calculate a requested power that is total power of the drive motor requested by a driver, assume power values of the engine-generator at equidistant intervals from minimum power to maximum power of the engine-generator, calculate a power value of the battery required to satisfy total power of the drive motor requested by the driver, using the assumed power values of the engine-generator and the requested power, calculate an efficiency of the engine-generator using an efficiency map of the engine-generator, and calculate an efficiency of the battery using an efficiency map of the battery as a function of the battery power and a measured State Of Charge (SOC) of the battery, calculate system efficiencies of the combat maneuvering system, for every assumed power value of the engine-generator at, the equidistant intervals, using the efficiency of the engine-generator and the efficiency of the battery, and select an assumed power of the engine-generator, obtained for a highest system efficiency, and control the engine-generator at the selected assumed power.
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Specification