Active disturbance rejection control method and system for direct-drive permanent magnet synchronous generator, and equipment

Abstract

The invention belongs to the technical field of control, particularly relates to an active disturbance rejection control method and system for a direct-drive permanent magnet synchronous generator, and equipment, and aims to solve the problems that the influence of an inverter on the control performance is not considered, the disturbance rejection capability is insufficient and the stability is relatively low in the existing control technology. The method comprises the following steps: constructing a classic PMSG control system, further constructing a motor first-order current state equation, and adding a transfer function of an inverter to construct a motor second-order current state equation; and designing a linear tracking differentiator LTD, a second-order linear extended state observer SLESO and a linear state error feedback control law LSEF by estimating an approximate error and compensating in the system, and combining the linear tracking differentiator LTD, the second-order linear extended state observer SLESO and the linear state error feedback control law LSEF into an SLADRC to control a current loop so as to control the permanent magnet synchronous generator. According to the invention, the anti-disturbance capability of the system is effectively improved, and the total disturbance is estimated and compensated, so that the adverse effect caused by the total disturbance is eliminated.

Description

technical field [0001] The invention belongs to the technical field of control, and in particular relates to a direct-drive permanent magnet synchronous generator active disturbance rejection control method, system and equipment. Background technique [0002] The traditional non-renewable fossil energy is continuously consumed, and its storage capacity is already foreseeable. In addition, the environmental pollution caused by the use of fossil energy is becoming more and more serious, which promotes the development and use of new energy. Among them, wind energy is a renewable clean energy. And the recoverable amount is huge, which is an effective way to supplement and replace traditional energy. The direct-drive permanent magnet synchronous generator set uses a full-power converter to drive a permanent magnet synchronous generator (PMSG). The generator is excited by a permanent magnet and does not require a gearbox with a complex structure and a high failure rate. It has hig...

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Problems solved by technology

[0004] In order to solve the above problems in the prior art, that is, the existing control technology does not consider the influence of the inverter on the control performance, the anti-disturbance ability is insufficient, and the stability is low, the present invention provides a direct drive permanent magnet A method for active disturbance rejection control of a synchronous generator, the method comprising:

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