Three-phase output voltage control method and device
A technology of output voltage control and output voltage, which is applied in the direction of output power conversion device, irreversible DC power input to AC power output, electrical components, etc., and can solve the problems of poor unbalanced load characteristics and poor dynamic characteristics. , to achieve the effect of good inverter circuit three-phase output voltage control performance and good dynamic characteristics
Active Publication Date: 2021-03-30
ZHANGZHOU KEHUA TECH CO LTD +1
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Problems solved by technology
Among them, using the independent control scheme, the output control of the inverter circuit has good unbalanced load characteristics, but the dynamic characteristics are poor; using the dq control scheme, the output control of the inverter circuit has good dynamic characteristics, but the unbalanced load characteristics are poor
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[0051]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 in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0053] Please refer to figure 1 and image 3 , figure 1 It is a schematic structural diagram of a three-phase output voltage control method provided by an embodiment of the present invention, image 3 It is a control schematic diagram of a three-phase output voltage control method provided by an embodiment of the present invention, and the three-phase output voltage control method is applied to an inverter circuit.
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The invention provides a three-phase output voltage control method and device, and the method comprises the steps: obtaining the output voltage of each phase of an inverter circuit, and determining the given basic quantity of each phase of the inverter circuit based on the effective value of the output voltage of each phase; performing dq conversion on the output voltage of each phase, determininga d-axis component of the output voltage of the inverter circuit, and determining a given compensation amount based on the d-axis component; obtaining the phase of the output voltage of each phase ofthe inverter circuit, and determining the output voltage given value of each phase of the inverter circuit based on the phase of the output voltage of each phase, the given basic quantity of each phase and the given compensation quantity; and performing closed-loop control on the three-phase output voltage of the inverter circuit based on the output voltage given value of each phase of the inverter circuit. The three-phase output voltage control method and device provided by the invention have better comprehensive control performance.
Description
technical field [0001] The invention belongs to the technical field of electrical control, and more specifically relates to a three-phase output voltage control method and device. Background technique [0002] In the prior art, there are mainly two control schemes for the three-phase output voltage of the inverter circuit, one scheme is independent control, and the other scheme is dq control. Among them, using the independent control scheme, the output control of the inverter circuit has good unbalanced load characteristics, but poor dynamic characteristics; using the dq control scheme, the output control of the inverter circuit has good dynamic characteristics, but poor unbalanced load characteristics. [0003] Therefore, there is an urgent need for a three-phase output voltage control scheme of the inverter circuit with good comprehensive control performance. Contents of the invention [0004] The purpose of the present invention is to provide a three-phase output volta...
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IPC IPC(8): H02M7/48H02M1/088
CPCH02M7/48H02M1/088
Inventor 卢雄伟苏宁焕许勇枝徐敏
Owner ZHANGZHOU KEHUA TECH CO LTD