Discharging circuit, energy router, frequency converter, centrifugal machine and centrifugal machine air conditioner

Abstract

The invention relates to a discharging circuit, an energy router, a frequency converter, a centrifugal machine and a centrifugal machine air conditioner, the discharging circuit consumes residual electric energy in a supporting capacitor by connecting heat dissipation equipment to two ends of the supporting capacitor in parallel, so that the residual electric energy in the supporting capacitor is discharged, and meanwhile, the heat dissipation equipment can also dissipate heat of the surrounding environment; and equivalently, not only is discharging realized, but also energy saving is realized, and the problems of electric energy waste and poor heat dissipation due to the fact that a discharging resistor is adopted for discharging the direct current supporting capacitor in the prior art are solved. Furthermore, according to the technical scheme provided by the invention, a user can judge whether residual electric energy exists in the direct current support capacitor by observing whether the heat dissipation equipment works or not, so that an electricity warning effect is achieved, the safety of after-sales maintenance personnel is improved, and the reliability of the discharge circuit is improved.

Description

technical field [0001] The invention relates to the technical field of circuit design, in particular to a discharge circuit, an energy router, a frequency converter, a centrifuge and a centrifuge air conditioner. Background technique [0002] Energy routers can realize the input, output, conversion, and storage of different energy carriers, and are the core devices of the Energy Internet. [0003] Under the background of dual carbon, energy routers will have very important applications in the future local energy Internet. For energy routers that can convert frequency, the input AC power is generally converted into DC power through the rectifier module, and then the DC power is converted into the required power through the inverter module. alternating current. [0004] The circuit connecting the rectifier module and the inverter module is the DC bus. Generally, for the stability of the DC bus, it is necessary to add a DC support capacitor to the DC bus (see figure 1 The DC ...

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a discharge circuit, an energy router, a frequency converter, a centrifuge and a centrifuge air conditioner, so as to solve the waste of electric energy and poor heat dissipation caused by discharging the DC support capacitor through the discharge resistor in the prior art The problem

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