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Inversion system and control method

An inverter system and control system technology, applied in the direction of converting AC power input to DC power output, output power conversion devices, electrical components, etc., can solve problems such as complex process, unguaranteed output voltage symmetry, and large volume

Inactive Publication Date: 2006-06-21
NORTHEASTERN UNIV
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Problems solved by technology

[0004] In the currently provided three-phase four-wire inverter power supply system, the scheme of adding a transformer is generally adopted. The system is bulky, complex in process, low in efficiency, and the transformer has leakage inductance, so the symmetry of the output voltage cannot be guaranteed; three. A half-bridge structure, when the load is seriously unbalanced, the capacitor connected to the center point bears a large current, which increases the possibility of system failure

Method used

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Embodiment

[0148] Example: Inverter system of micro gas turbine generator set

[0149] The electric energy generated by the micro gas turbine can be processed to form direct current, and the direct current needs to be inverted to form three-phase four-wire alternating current for users.

[0150] The inverter control system and method of the present invention can meet this requirement and fulfill this function well. The system consists of a power conversion circuit and a control system. figure 1 A schematic diagram of the system system of the present invention is given. The power conversion circuit is composed of a power inverter circuit and a power filter circuit; the control system includes a central control module, a multi-channel data detection and acquisition module, a hierarchical communication module, a multi-channel power drive module and a hierarchical alarm module.

[0151] 1. Power conversion circuit

[0152] 1. Power inverter circuit

[0153] The power inverter circuit adopt...

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Abstract

The invention relates to a inversion system, which comprises: an electric power conversion circuit with a power conversion and a power filter circuit to supply dc-ac convert path, and a control system to realize control algorithm, information management and exchange and control other parts. Wherein, the control system comprises: a central-control module, multiplex data detection and collection module, a hierarchy communication management module, multiplex power drive module, and a hierarchy alarm management module. This invention ensures the amplification and narrow-impulse limit, can feedback the alarm information accuracy in time, has strong communication function, and the software has strong real-time and specialty.

Description

technical field [0001] The invention belongs to the technical field of power electronics and power conversion systems and devices, and in particular relates to an inverter system and a control method. Background technique [0002] With the continuous emergence of new electronic devices, electromagnetic materials, conversion technologies, control theories, and new chips and software, power electronics and power conversion technology have been greatly developed, and the performance of related products has been significantly improved. [0003] In recent years, with the construction of the second-generation energy system, the cogeneration system of heat, electricity and cooling composed of micro gas turbine generator sets has been actively promoted and applied internationally. The inverter system (converting direct current to alternating current) has received widespread attention as a guarantee of the final output power quality of the micro-turbine power generation system and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/537
Inventor 张化光陈宏志刘秀翀边春元闫士杰李爱平韩安荣马先
Owner NORTHEASTERN UNIV
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