5 results about "Operating voltage" patented technology

The invention discloses a maximum power point tracking control method for a photovoltaic inverter. The method includes the steps: S1, allowing the voltage of a solar panel to be periodically disturbed in a fixed direction at a large step V_step_big from an open-circuit voltage point oc to a short-circuit point o, and recording power Ppv and operating voltage Vpv in each disturbance; S2, when MPPT (maximum power point tracking) minimum voltage V_min is disturbed, finishing the fixed-direction disturbance, finding out the maximum value Ppv_max of all the recorded power Ppv during disturbance from the point oc to the point V_min and the corresponding voltage value Vpv_max; S3, periodically disturbing at a small step V_step_small with the Vpv_max serving as an initial point to perform maximum power point tracking; and S4, as for the single-way MPPT, judging whether the operating voltage of the solar panel is smaller than the operating voltage of a bus or not in a scanning or searching state. The maximum power point tracking control method integrates MPPT tracking speed and tracking precision, two-way MPPT can be performed at the same time, and the method is applicable to mounting conditions of various solar panels.

The invention relates to a large-capacity lithium iron phosphate storage battery which is characterized by comprising a plurality of single batteries which are connected in parallel and combined. Eachsingle battery comprises a positive plate, a negative plate, a partition and electrolyte; single battery pole ears and a current collecting plate or the pole ears are folded in half and fastened withthe current collecting plate by adopting the mode of mechanical connection. The large-capacity lithium iron phosphate storage battery has the characteristics of high working voltage, long cycle life,small self discharge and the like, and has the self typical advantages of large capacity (the rated capacity can reach to more than 100Ah), rapid charge and discharge by using large current (more than 200A), reduction of production cost of the storage battery and the like, and is especially suitable for large-capacity and rapid charge and discharge application fields of AGV vehicles and the like.

The invention discloses a method, circuit and device for controlling a radio frequency circuit, wearable equipment and a medium, and relates to the technical field of electronics. According to the method, on the basis that the power consumption of a radio frequency PA is adjusted by adjusting the working voltage of the radio frequency PA, a judgment threshold used for adjusting a static working point of the radio frequency PA is obtained, and an actual value of an ACLR of an adjacent channel corresponding to a target channel is obtained; adjusting the static working point of the radio frequency PA according to the relation between the actual value of the ACLR and the judgment threshold; after the static working point of the radio frequency PA is adjusted, the actual value of the ACLR is correspondingly adjusted, and when the adjusted actual value of the ACLR meets the judgment threshold, the adjustment is ended. Therefore, according to the method, on the basis of adjusting the working voltage of the radio frequency PA, the power consumption of the radio frequency PA is further adjusted by adjusting the quiescent working point of the radio frequency PA, so that the performance of the radio frequency transmitting circuit is improved.