Inverter circuit, control method thereof and air conditioner
A control method and inverter circuit technology, applied in electrical components, high-efficiency power electronic conversion, conversion of AC power input to DC power output, etc., can solve problems such as low output efficiency, and achieve the goal of improving operating efficiency and reducing energy consumption. Effect
Pending Publication Date: 2022-07-08
GREE ELECTRIC APPLIANCES INC
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Aiming at the problem of low output efficiency of the three-phase inverter under the condition of three-phase asymmetric load in the prior art, the present invention proposes an inverter circuit and its control method, and an air conditioner
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0053] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0054] Thus, a reference to a feature in this specification will be used to describe one of the features of an embodiment of the invention and not to imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Thus, unless otherwise stated, the combinations described are not intended to be li...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an inverter circuit, a control method thereof and an air conditioner, and the control method comprises the steps: collecting three-phase electrical parameters of the inverter circuit, and extracting each sequence component of the three-phase electrical parameters; feedforward decoupling control of a voltage outer loop and a current inner loop is adopted for each sequence component of the three-phase electrical parameters under the dq coordinate system; performing conversion from a dq coordinate system to an abc coordinate system on each sequence component of the three-phase electrical parameters after feedforward decoupling control to obtain alternating current quantities corresponding to a phase, b phase and c phase of the inverter circuit; and respectively controlling the conduction states of switch tubes on an a-phase bridge arm, a b-phase bridge arm and a c-phase bridge arm of the inverter circuit according to the alternating current quantity. Compared with the prior art, the double-loop PI control method is adopted, the energy consumption of the three-phase inverter circuit is reduced, and then the operation efficiency of the rear-end three-phase asymmetric load compressor is improved.
Description
technical field [0001] The invention relates to the technical field of inverter circuit control, in particular to an inverter circuit and a control method thereof, and an air conditioner. Background technique [0002] As an important part of the conversion of electric energy from DC to three-phase AC, inverter circuits have been widely used in air conditioner circuits to realize the function of inverting DC bus voltage to three-phase AC voltage. The low-THD DC power after passing through the PFC and filter circuit is converted into three-phase AC power with lower harmonic content to supply power to the back-end compressor, and finally realize the cooling and heating functions of the air conditioner. [0003] At present, the core part of the three-phase voltage source inverter circuit mainly includes the input capacitor, the three-phase inverter bridge arm and the filter circuit on the rear side thereof. Due to the processing and assembly process, some compressors are three-...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/5387H02M1/088
CPCH02M7/5387H02M1/088Y02B70/10
Inventor 李洋刘文斌范晓坤范胜全
Owner GREE ELECTRIC APPLIANCES INC