3 results about "Generator control" patented technology

The invention relates to an asynchronous cooperative optimal AGC control system for a wind power plant and a conventional frequency modulation unit. The system comprises a wind turbine generator secondary frequency modulation response model and a wind power plant and conventional frequency modulation unit asynchronous cooperation participation secondary frequency modulation control model; the windturbine generator secondary frequency modulation response model comprises a wind speed prediction module; the wind speed prediction module sends the maximum output to a wind power plant load sheddingcalculation module; the wind power plant load shedding calculation module sends the total adjustment amount of a wind power plant to a proportional distribution module; and the proportional distribution module generates the power generation amount of each generator and sends the power generation amount to a wind turbine generator control module; the wind power plant and conventional frequency modulation unit asynchronous cooperation participation secondary frequency modulation control model comprises an asynchronous cooperative optimal AGC control model; the asynchronous cooperative optimal AGC control model is connected with the wind power plant load shedding calculation module and the conventional frequency modulation unit module; and the wind power plant load shedding calculation module, the conventional unit frequency modulation module and a load are connected into a power system module. According to the system, asynchronous cooperative optimal AGC control is adopted, and the real-time optimal distribution of the frequency modulation capacity of the wind power plant and the conventional frequency modulation unit is achieved.

The invention discloses a deicing device and method for a blade of a wind turbine generator. The device comprises a plurality of spray pipes arranged on a tower drum at intervals up and down, whereinhorizontal length of each spray pipe is smaller than distance between the blade and the tower drum, all the spray pipes are connected with a hydraulic pressure station through delivery pipes, the hydraulic pressure station comprises a liquid storage tank and a hydraulic pump, an ice melting agent is stored in the liquid storage tank, the hydraulic pressure station is connected with a deicing control system, and the deicing control system is connected with a wind turbine generator control system. The deicing device has the beneficial effects of being simple in structure, low in manufacturing cost, high in deicing efficiency and low in safety risk and the deicing process is highly repeatable.

The invention discloses a control circuit for removing rainwater of an automobile rearview mirror by using ultrasonic wave. The control circuit comprises a storage battery, an ignition switch, a wiper control switch, a normally-open wiper motor control relay, a wiper motor, a normally-open ultrasonic wave generator control relay and an ultrasonic wave generator, wherein the negative electrode of the storage battery is grounded; the positive electrode of the storage battery is grounded after passing through the ignition switch, the wiper control switch and an electromagnetic coil of the normally-open wiper motor control relay, is grounded after passing through a control contact of the normally-open wiper motor control relay and the wiper motor, and is grounded after passing through the normally-open ultrasonic wave generator control relay and the ultrasonic wave generator; and the electromagnetic coil of the normally-open ultrasonic wave generator control relay is connected in parallel with the electromagnetic coil of the normally-open wiper motor control relay. Through the control circuit for removing the rainwater of the automobile rearview mirror by using the ultrasonic wave, the defects such as poor application effect, high potential safety hazard and the like in the prior art can be overcome to realize a good application effect and low potential safety hazard.