Modeling and Simulation Method for Compensator of Improved Interleaved Buck DC-DC Converter
A simulation method, interleaved technology, applied in the direction of converting DC power input to DC power output, instruments, adjusting electrical variables, etc., to achieve good compensation effects
Active Publication Date: 2022-03-29
XIAMEN UNIV OF TECH
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[0004] However, there is no good design method for the compensator of the interleaved buck DC-DC converter in the prior art
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[0042]To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.
[0043] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.
[0044] figure 1 The flow chart of modeling and simulation of the compensator of the improved interleaved buck DC-DC converter provided by the present invention.
[0045] figure 2 It is a structural schematic diagram ...
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A modeling and simulation method for a compensator of an improved interleaved buck DC / DC converter, comprising: step S1, for a given improved interleaved buck DC-DC converter, calculating the switched capacitance of its open loop buck C B Capacitance value, inductance value of inductor L, equivalent resistance R esr The resistance value and the duty cycle D under the four modes of work; Step S2, using the parameter f of the open loop buck 0 , f c , f z and f sw Modeling of the compensator: according to f 0 , f c , f z , f sw Select the type of compensator in order of size, and draw a Bode diagram, where, f 0 is the natural frequency of the system, f c is the operating frequency of the system after compensation, f z is the cutoff frequency, f sw is the switching frequency; Step S3, calculate the capacitance and resistance value of the compensator according to the formula of the applicable compensator type; Step S4, simulation, according to the capacitance value and resistance value of the compensator obtained in the step S3, And set the comparison voltage, generate corresponding PWM to control the switch and observe whether the waveform of the output voltage is in the standard range.
Description
technical field [0001] The invention relates to an interleaved buck DC-DC converter, in particular to a modeling and simulation method for a compensator of an improved interleaved buck DC-DC converter. Background technique [0002] The current circuit design largely uses a series of simulation programs for circuit simulation and debugging, which replaces the previous experiments that can only be completed by building specific physical circuits in corresponding hardware laboratories, thus saving the actual hardware development time. difficulty. [0003] In order to maintain the stability of the output voltage, the power converter usually uses the error amplifier as a feedback control to regulate the circuit. To make the error amplifier operate stably, the circuit must be properly compensated. [0004] However, there is no good design method for the compensator of the interleaved buck DC-DC converter in the prior art. Contents of the invention [0005] The purpose of the p...
Claims
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IPC IPC(8): H02M3/158
CPCH02M3/1584H02M3/1586
Inventor 徐敏张辑林瑞金高金铭
Owner XIAMEN UNIV OF TECH