Multi-target cooperative control output voltage harmonic suppression method for inverter
A technology of cooperative control and output voltage, which is applied in the direction of converting irreversible DC power input into AC power output, output power conversion device, AC power input into AC power output, etc., to achieve strong robust performance and improve DC side Effect of damping characteristics, fast dynamic performance
Pending Publication Date: 2021-11-09
武汉市翔云骏科技有限公司
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[0004] The purpose of the present invention is to provide a multi-objective cooperative control method for harmonic suppression of the output voltage of the inverter, which solves the existing problems
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] Such as figure 1 As shown, the present invention is a method for multi-objective cooperative control output voltage harmonic suppression for inverters, including the following steps:
[0030] Step 1: The alternating current delivered by the generator is rectified by a rectifier circuit with a three-phase bridge circuit, turned into pulsating direct current, and output to the DC bus circuit; the DC bus circuit filters the pulsating direct current and then sen...
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The invention discloses a multi-target cooperative control output voltage harmonic suppression method for an inverter. The method comprises the following steps of: 1, rectifying alternating current transmitted by a generator through a rectifying circuit into pulsating direct current, and outputting the pulsating direct current to a direct-current bus circuit; and filtering alternating-current components of the pulsating direct current and then transmitting the pulsating direct current to the inverter circuit by the direct-current bus circuit; 2, controlling an inverter circuit by PWM waves generated by a control circuit through a drive circuit to obtain a pulse voltage waveform, enabling the pulse voltage waveform to pass through a filter circuit to generate pure alternating current close to sine, and outputting the pure alternating current to an EMC circuit; and 3, reducing conduction and radiation interference in the EMC circuit and then outputting a load. According to the method, on the basis of ensuring the stability of the system, the reference signal can be tracked without static error, the rapid dynamic performance is achieved during sudden loading and sudden unloading, and the high robust performance is achieved for perturbation of system parameters such as bus voltage fluctuation and filter parameter change.
Description
technical field [0001] The invention belongs to the technical field of inverters, and in particular relates to a method for suppressing harmonics of the output voltage of the multi-objective cooperative control of the inverter. Background technique [0002] The inverter is a high-performance converter power supply for supporting generator systems. It is mainly used to convert the AC output with unstable frequency and voltage from the permanent magnet generator into a power frequency single-phase AC with stable frequency and voltage. , to provide power frequency power for mission equipment. [0003] At present, the output waveform of the existing inverter has fast dynamic performance when it is subjected to sudden input and sudden load unloading, and has low robustness to perturbation of system parameters such as bus voltage fluctuations and filter parameter changes. Contents of the invention [0004] The purpose of the present invention is to provide a method for multi-ob...
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IPC IPC(8): H02M5/458H02M1/14H02M7/48H02M7/537H02M1/32H02M1/44
CPCH02M5/458H02M1/14H02M7/48H02M7/537H02M1/32H02M1/44
Inventor 唐伟刘洪良
Owner 武汉市翔云骏科技有限公司