CN203463227U - Wind power variable pitch control system - Google Patents

Abstract

The utility model discloses a wind power variable pitch control system, comprising an industrial control computer, a first GPRS module, a second GPRS module, a PLC, a power supply, a variable pitch motor, and a driving circuit. The driving circuit comprises a DSP, a rectifier, a super capacitor, and an inverter, the industrial control computer is connected with the first GPRS module, the first GPRS module is in a wireless connection with the second GPRS module, the second GPRS module, the PLC, the DSP, and the inverter are successively connected, the rectifier, the super capacitor, the inverter, and the variable pitch motor are successively connected, the rectifier is connected to an electrical supply, and the power supply is connected with the industrial control computer, the first GPRS module, the second GPRS module, the PLC, and the DSP. The wind power variable pitch control system is advantageous in that, on the basis of guaranteeing pitch control effect, structure is simplified, cost is reduced, and remote wireless control is achieved.

Description

A kind of variable propeller pitch control

Technical field

The utility model relates to a kind of variable propeller pitch control.

Background technique

Wind-power electricity generation is by being mechanical energy by the kinetic transformation of air, and then is converted into electric energy, is the developing direction of with fastest developing speed in current new energy development field and tool potentiality.But wind energy, as a kind of intermittent energy source, has very large randomness and uncontrollability.The wave range of wind power generating set output power is conventionally larger, conventionally by variable blade control system, adjust the blade pitch angle on wheel hub, variation according to wind speed regulates propeller pitch angle to control the wind energy that wind-driven generator absorbs at any time, thereby improve the efficiency of whole wind power generating set, keep power and the velocity-stabilization of wind power generating set, and can effectively reduce blower fan load.

At present, along with the power of wind power generating set increases gradually, in order to guarantee that good change oar controls effect, the structure of variable blade control system also becomes increasingly complex, and cost also constantly rises.Therefore, control on the basis of effect guarantee becoming oar, simplify as far as possible variable propeller pitch control structure, reduce its cost, be that the applicant is devoted to the problem solving.

Summary of the invention

The purpose of this utility model be to provide a kind of simple in structure, cost is low and variable propeller pitch control that can controlled in wireless, can realize accurately and rapidly wind electricity change paddle and control.

The technological scheme that realizes above-mentioned purpose is:

A kind of variable propeller pitch control, comprise process control machine, a GPRS(general packet radio service technology) module, the 2nd GPRS module, PLC(programmable logic controller (PLC)), power supply, pitch motor and drive circuit, described drive circuit comprises DSP(DSP digital signal processor), rectifier, super capacitor and inverter, wherein:

Described process control machine is connected with a GPRS module;

A described GPRS module and the 2nd GPRS module wireless connections;

Described the 2nd GPRS module, PLC, DSP are connected successively with inverter;

Described rectifier, super capacitor, inverter and pitch motor are connected successively;

Described rectifier access civil power;

Described power supply connects respectively described process control machine, a GPRS module, the 2nd GPRS module, PLC and DSP.

The beneficial effects of the utility model are: the utility model, by effective combination of the parts such as process control machine, PLC, pitch motor, simple drive circuit, is guaranteeing that becoming oar controls on the basis of effect, simplifies the structure, and has reduced cost.Meanwhile, the utility model has been realized the radio communication between process control machine and PLC by two GPRS modules, thereby realizes remote wireless control.

Accompanying drawing explanation

Fig. 1 is the structural representation of variable propeller pitch control of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Refer to Fig. 1, variable propeller pitch control of the present utility model, comprise process control machine 1, a GPRS module 2, the 2nd GPRS module 3, PLC4, power supply 5, pitch motor 6 and drive circuit 7, drive circuit 7 comprises DSP71, rectifier 72, super capacitor 73 and inverter 74, wherein:

Pitch motor 6 is for regulating wind power station blade angle;

Process control machine 1 is connected with a GPRS module 2, a GPRS module 2 and the 2nd GPRS module 3 wireless connections, and the 2nd GPRS module 3 is connected with PLC4; Process control machine 1 and PLC4 realize communication by a GPRS module 2 and the 2nd GPRS module 4 of wireless connections;

PLC4, DSP71 are connected successively with inverter 74;

Rectifier 72, super capacitor 73, inverter 74 and pitch motor 6 are connected successively;

Power supply 5 connects respectively process control machine 1, a GPRS module 2, the 2nd GPRS module 3, PLC4 and DSP71, for power supply;

In the utility model, process control machine 1 is according to parameters such as wind speed, generator power and rotating speeds, calculate the change oar expected value of blade, and expected value is converted into control command by a GPRS module 2 and the 2nd GPRS module 3, issues PLC4, PLC4 controls DSP71 according to the control command receiving and exports corresponding pulse signal to inverter 74, by output voltage and the frequency of cut-offfing to adjust inverter 74 of control inverter 74 inner IGBT; Rectifier 72 access civil powers, be translated into direct current, deposit super capacitor 73 in, inverter 74 is converted into Ac by the direct current of super capacitor 73 storages, accept the pulse of DSP71 controls simultaneously, according to becoming oar expectation, be defeated by the supply voltage of pitch motor 6 actual demand, pitch motor 6 regulates blade angle by blade pitch device.

In the present embodiment, it is GTM900-C that a GPRS module 2 and the 2nd GPRS module 3 are selected model; Described PLC4 selects Omron PLC--CPM1A-V1 series; The model that described DSP71 selects is TMS320F2808.

Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technological schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims (1)

1. a variable propeller pitch control, is characterized in that, comprises process control machine, a GPRS module, the 2nd GPRS module, PLC, power supply, pitch motor and drive circuit, and described drive circuit comprises DSP, rectifier, super capacitor and inverter, wherein:

Described process control machine is connected with a GPRS module;

A described GPRS module and the 2nd GPRS module wireless connections;

Described the 2nd GPRS module, PLC, DSP are connected successively with inverter;

Described rectifier, super capacitor, inverter and pitch motor are connected successively;

Described rectifier access civil power;

Described power supply connects respectively described process control machine, a GPRS module, the 2nd GPRS module, PLC and DSP.

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