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1 results about "Shunt generator" patented technology
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A shunt generator is a type of direct current electric generator in which field winding and armature winding are connected in parallel, and in which the armature supplies both the load current and the field current. A direct current (DC) generator, not using a permanent magnet, requires a DC field current for excitation. The field may be separately excited by a source of DC, such as a battery, or self excited by being connected to the armature of the generator so that the generator also provides the energy required for the field current.
A series-parallel diesel-electric hybrid ship mode switching dynamic coordination control strategy
This invention discloses a dynamic coordinated control strategy for mode switching in a series-parallel diesel-electric hybrid ship, belonging to the field of marine power control technology. The strategy includes the following steps: S1, connecting the shaft-driven motor and the main engine in parallel via a gearbox, and connecting the generator set and the energy storage battery pack to the DC bus to obtain a series-parallel power system; S2, constructing a mathematical model system; S3, obtaining the optimal operating mode discrimination result by constructing fuzzy membership functions; S4, formulating target torque distribution rules and constructing a state-space model using model predictive control theory; S5, obtaining control commands by optimizing the target torque distribution result in the rolling time domain; S6, obtaining the mode switching process by controlling the clutch state, the shaft-driven motor operating mode, and the speed and torque matching of each power source. This control strategy solves the problems of difficult multi-power source coordination, large switching impact, severe torque fluctuations, and inaccurate mode discrimination during mode switching in series-parallel diesel-electric hybrid ships.
Owner:WUHAN UNIV OF TECH