Drive system, air conditioning equipment, control method and controller

Abstract

The invention provides a driving system, air conditioner equipment, a control method and a controller. The driving system comprises a rectification circuit, an inversion circuit and a DC bus circuit,wherein the DC bus circuit is electrically connected between the rectification circuit and the inversion circuit, the rectification circuit comprises a first output end and a second output end, the inversion circuit comprises a first input end and a second input end, the DC bus circuit comprises a first branch, a second branch and a plurality of third branches, the first branch is electrically connected between the first output end and the first input end, the second branch is electrically connected between the second output end and the second input end, an inductor is arranged on the first branch or the second branch, the plurality of third branches are connected in parallel between the first branch and the second branch, and each third branch comprises a capacitor and a switch device which are connected in series. With the driving system provided by the invention, the voltage stability of the DC bus and the reliability of the driving system can be improved.

Description

technical field [0001] The present disclosure relates to the field of circuit technology, and in particular to a drive system, an air conditioner, a control method and a controller. Background technique [0002] In traditional drive systems, electrolytic capacitors are used on the DC bus to ensure the stability of the DC bus voltage. However, electrolytic capacitors are expensive and bulky, which increases the cost and weight of the drive system. Not only that, the capacity of electrolytic capacitors is greatly affected by the external environment and system status, especially when the ambient temperature is high, the electrolyte in the electrolytic capacitor will volatilize, resulting in a decrease in capacitance and seriously affecting system reliability. The drive system without electrolytic capacitors has the advantages of simple structure, small size, and low cost, and is the development trend of the industry. Contents of the invention [0003] The inventors of the ...

AI Technical Summary

Problems solved by technology

However, electrolytic capacitors are expensive and bulky, which increases the cost and weight of the drive system

Not only that, the capacity of the electrolytic capacitor is greatly affected by the external environment and system status, especially when the ambient temperature is high, the electrolyte in the electrolytic capacitor will volatilize, resulting in a decrease in capacitance and seriously affecting system reliability

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