Inverter control strategy based on improved particle swarm optimization disturbance observer composite sliding mode

The invention discloses an inverter control strategy based on an improved particle swarm optimization perturbation observer composite sliding mode, and the strategy employs a perturbation observer based on an extended state observer, employs the proportion (P), integral (I) and differential (D) of observation errors to estimate the perturbation under the condition that an original calculation structure of the extended state observer is maintained, and achieves the control of the composite sliding mode of the perturbation observer. And disturbance is used for replacing a filtering inductive current observation value, so that an inductive current sensor is omitted, and the probability of worsening the control effect due to a fault of the sensor is reduced. An improved particle swarm algorithm is adopted, the inertia coefficient is gradually adjusted in the iteration process, the observation precision of the observer is improved, and observation errors are reduced. The observer is applied and compounded with a s