Three-phase buck-boost rectification converter and control method
A buck-boost and converter technology, which is applied in the direction of converting DC power input to DC power output, AC power input to DC power output, irreversible AC power input to DC power output, etc. Diversion capacity of pressure switch devices, many diversion path devices, unsuitable for cost requirements, etc., to achieve the effects of reduced limitation, low loop conduction impedance, and reduced control difficulty
Pending Publication Date: 2021-10-15
深圳市高益智能电气有限公司 +1
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[0004] The object of the present invention is to provide a three-phase buck-boost rectifier converter and its control method, which solves the problems of the above-mentioned prior art with too many diversion path devices an
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[0041] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the present invention is not limited to the specific embodiments disclosed below limit.
[0042] Unless otherwise defined, the technical terms or scientific terms used herein shall have the common meanings understood by those having ordinary skill in the field to which this application relates. "First", "second" and similar words used in the specification and claims of this patent application do not indicate any sequence, quantity or importance, but are only used to distinguish different components...
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The invention discloses a three-phase buck-boost rectifier converter and a control method. The three-phase buck-boost rectifier converter comprises an input rectifier bridge group, a buck unit and an energy storage follow current unit, the input rectifier bridge group comprises first to third rectifier bridges, the voltage reduction unit comprises first to eighth switching tubes and thirteenth to sixteenth diodes, and the energy storage follow current unit comprises seventeenth to twenty-second polar tubes, ninth to tenth switching tubes, first to fourth follow current inductors and a filter capacitor. The three-phase buck-boost rectifier converter is provided with two step-down switch units and can work in parallel in the same phase or in the staggered phase, maximum multiplexing of the input rectifier bridge group and the step-down switch units in the three-phase rectification converter can be realized by applying a middle-mode PWM driving signal and a high-mode PWM driving signal to the switch tubes, and the three-phase rectification converter is suitable for the large-medium-power output voltage with a wide range and high reliability. Or the output voltage is in a range from multiple to multiple input phase voltage, and high efficiency and high power density are needed.
Description
technical field [0001] The present application relates to the field of power electronics, in particular to a three-phase buck-boost rectifier converter and a control method. Background technique [0002] At present, the power of electrical equipment is getting larger and larger, and more and more electrical equipment adopts three-phase power supply mode. If the electrical equipment does not have the power factor correction (PFC) function, it will greatly damage the power quality of the grid. In severe cases It may even lead to the breakdown of the power grid. In order to meet the quality requirements of the grid, reduce harmonic pollution to the grid or cause unnecessary transmission burden on the distribution network, the three-phase electrical equipment must have the PFC function or add a filter device to meet the requirements of relevant regulations. [0003] Generally speaking, for a three-phase AC input rectification conversion circuit, if the PFC function is required,...
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Login to View More IPC IPC(8): H02M7/08H02M7/217H02M3/158
CPCH02M7/08H02M7/2173H02M3/1584
Inventor 李伦全李玲陈乾宏
Owner 深圳市高益智能电气有限公司