A control method and device for a multi-level power electronic converter system
A technology for power electronics and converters, which is applied in the field of control methods and devices for multi-level power electronic converter systems, can solve problems such as cost increase, and achieve the effects of high efficiency and cost reduction.
Active Publication Date: 2017-09-22
SHANGHAI KOSTAL HUAYANG AUTOMOTIVE ELECTRIC
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Problems solved by technology
[0004] At present, most of the improvement of the efficiency of the entire system depends on the innovation of devices, such as the use of power switching devices with lower switching loss and lower on-state impedance, and magnetic devices with lower core loss, but the innovation of devices can improve the efficiency of the entire system. efficiency, will result in an increase in the cost of the overall system
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[0052] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0053] an embodiment
[0054] See figure 1 , which shows a flow chart of the control method of the multi-level power electronic converter system provided by the present application, which may include the following steps:
[0055] Step S11: Determine the current input and output conditions of the multi-level power electronic converter system.
[0056] Step S12: Obtain the optimal solution of the bus voltage corresponding to the current input and output conditions from the preset da...
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The present application provides a control method and device for a multi-level power electronic converter system. The method includes: determining the current input and output conditions of the multi-level power electronic converter system; obtaining the current input and output conditions from a preset data file The optimal solution of the bus voltage corresponding to the input and output conditions, the optimal solution of the bus voltage is when the product of the efficiencies of the power electronic converters at each level in the multi-level power electronic converter system is the largest, the two adjacent corresponding levels The voltage value of the bus between the converters; according to the bus voltage optimal solution, set the corresponding voltage value for the corresponding bus. Since the present application optimizes the control method to maximize the efficiency of the multi-level power electronic converter system without relying on any device innovation, thus reducing the cost of the entire multi-level power electronic converter system.
Description
technical field [0001] The present application relates to the field of power electronic converters, in particular to a control method and device for a multi-level power electronic converter system. Background technique [0002] In power electronic converters, considering the reliability of the circuit, the isolation of input and output, and the optimization of design, a multi-level circuit structure is often used. [0003] With the increasingly severe energy problems, the requirements for the power conversion efficiency of power electronic converters are getting higher and higher. For a multi-level power electronic converter system, the efficiency of the entire system is equal to the product of the efficiency of the converters at all levels. [0004] At present, most of the improvement of the efficiency of the entire system depends on the innovation of devices, such as the use of power switching devices with lower switching loss and lower on-state impedance, and magnetic de...
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IPC IPC(8): H02M1/00
Inventor 陈志刚孟令杰
Owner SHANGHAI KOSTAL HUAYANG AUTOMOTIVE ELECTRIC