3results about How to "Avoid charging and discharging" patented technology

This invention discloses a high-precision single-ended read circuit based on a voltage-controlled magnetic anisotropic magnetic memory (VMI). The circuit includes a master-slave RFSE read sensing circuit, a finely adjustable voltage divider circuit, and a read control signal generation circuit. The master-slave RFSE read sensing circuit comprises two independent RFSE read sensing circuits, enabling alternating read operations during the reset and sensing phases. The finely adjustable voltage divider circuit fine-tunes the bit line voltage within a ±10% range of the voltage divider resistor to compensate for process variations and voltage drift. The read control signal generation circuit generates an adjustable asynchronous read control signal through a read delay chain structure. The memory cell being read consists of a magnetic tunnel junction (MTJ) and a memory access transistor. This circuit innovatively introduces a finely adjustable voltage divider circuit, eliminating the need for a traditional reference cell and effectively resisting PVT fluctuations. High-speed, high-precision asynchronous reading is achieved through the master-slave RFSE read sensing circuit and the read control signal generation circuit.

This invention relates to the field of marine power system control technology, and particularly to a hybrid power management method for ships based on the synergy of shaft-driven power generation and lithium batteries. The method includes: real-time acquisition of the ship's power grid load demand, the output power of the shaft-driven power generation system, the state of charge of the lithium battery system, and the rotational speed of the ship's main engine; adaptively determining the current system operating mode; calculating the real-time power difference between the load demand and the output power of the shaft-driven power generation system; generating a target charge / discharge power for the lithium battery system; obtaining a safe command charge / discharge power; controlling the lithium battery system to execute the command charge / discharge power, and controlling the shaft-driven power generation system to operate according to the target of the current mode. Through precise power scheduling and adaptive switching of system operating modes, the method ensures that the ship's power system always operates in an energy-optimal state under different operating conditions.

The present application relates to the technical field of power system frequency regulation and new energy grid-connected control, in particular to a kind of energy storage adaptive droop primary frequency modulation method and system of online rolling optimization, the method real-time acquisition system frequency deviation, frequency rate of change and energy storage state of charge;Adopt hot start strategy to inherit the population state of last cycle, and initialize the population of current cycle with the optimal solution neighborhood of last cycle;Through grey wolf optimization algorithm online rolling optimization, to solve optimal droop adjustment coefficient with the multi-objective comprehensive fitness function of frequency regulation performance index, energy storage SOC double threshold nonlinear square penalty and power smoothing term as target;First-order low-pass filter is applied to output to obtain dynamic droop coefficient, according to which the energy storage power reference instruction is calculated and charging and discharging is executed.The present application transforms grey wolf optimization algorithm from offline setting to online rolling optimization engine, realizes millisecond-level real-time response through hot start and simplified iteration, realizes the collaborative optimization of frequency modulation performance and energy storage safety through SOC square penalty, and significantly improves the working condition adaptive ability of system to photovoltaic fluctuation and load disturbance.