Drive circuit, air conditioner drive system, air conditioner, control method and controller

Abstract

The disclosure provides a driving circuit, an air conditioner driving system, an air conditioner device, a control method, and a controller, and relates to the field of circuits. The driving circuit comprises a rectifying circuit, an inverter circuit and a DC bus arranged between the rectifying circuit and the inverter circuit, wherein the DC bus is provided with a plurality of inductors; each inductor is connected in parallel with a switching device; the DC bus includes a first DC bus and a second DC bus between which a capacitor is arranged. The driving circuit helps to reduce the ripple amplitude of the DC bus voltage by changing the magnitude of the inductance on the DC bus, thereby improving the stability of the DC bus voltage and the reliability of the driving circuit.

Description

technical field [0001] The present disclosure relates to the field of circuits, and in particular to a drive circuit, an air conditioner drive system, an air conditioner, a control method and a controller. Background technique [0002] In traditional drive circuits, electrolytic capacitors are used on the DC bus to ensure the stability of the DC bus voltage. However, the high price and large volume of electrolytic capacitors will increase the cost and weight of the drive circuit. 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. The non-electrolytic capacitor drive board has the advantages of simple structure, small size, and low cost, which is the development trend of the industry. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0002] In traditional drive circuits, electrolytic capacitors are used on the DC bus to ensure the stability of the DC bus voltage. However, the expensive price and large volume of electrolytic capacitors will increase the cost and weight of the drive circuit.

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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