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Diesel power generation system and its control method based on brushless doubly-fed motor

A doubly-fed motor and diesel power generation technology, applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve the problems of being easily disturbed and unable to maintain stable power generation, so as to avoid shocks and maintain high-efficiency and stable power generation , enhance the effect of stability

Active Publication Date: 2020-06-02
EAST GRP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a diesel power generation system based on a brushless doubly-fed motor and its control method in view of the problem that the current variable-speed constant-frequency diesel power generation system is easily disturbed after being connected to the grid and cannot maintain stable power generation

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  • Diesel power generation system and its control method based on brushless doubly-fed motor
  • Diesel power generation system and its control method based on brushless doubly-fed motor
  • Diesel power generation system and its control method based on brushless doubly-fed motor

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of 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.

[0041] See figure 1 , figure 1 It is a schematic diagram of a diesel power generation system based on a brushless doubly-fed motor according to an embodiment of the present invention.

[0042] In this embodiment, the diesel power generation system based on a brushless doubly-fed motor includes a brushless doubly-fed motor 101 , a diesel engine 102 , a converter 103 and a controller 104 . The brushless doubly-fed motor 101 and the diesel engine 102 are coaxially installed. The brushless doubly-fed motor 101 includes a stator and a rotor, the stator includes a power winding and a control winding, ...

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Abstract

The invention discloses a brushless double-fed motor based diesel power generation system including a brushless double-fed motor and a diesel engine. The brushless double-fed motor and the diesel engine are mounted coaxially. The brushless double-fed motor includes a stator and a rotor. The stator includes a power winding and a control winding and also includes converters and a controller. The converters are a machine-side converter and a grid-side converter. The controller is used for controlling the converter. The controller controls the converters to enable power winding side voltage to follow power grid voltage before grid connection of the diesel power generation system. The controller controls the converters so as to enable the output power of the diesel power generation system to follow a set value after grid connection. According to the invention, high-efficiency, energy-saving, variable-speed, constant-frequency stable power generation of the diesel engine is realized and stable power generation can be maintained in a condition with interference. The invention also discloses a control method of the brushless double-fed motor based diesel power generation system.

Description

technical field [0001] The invention relates to the field of electric transmission and power generation control, in particular to a diesel power generation system based on a brushless double-fed motor and a control method thereof. Background technique [0002] Today's islands and remote regions of the world rely on fossil fuels for most of their energy needs, and high fuel costs have been passed on to rapidly rising electricity generation costs. Second, the cost of transporting the fuel to remote areas is high due to high transport and storage costs. Thirdly, in these areas, fixed-speed diesel engines are mostly used for power generation, and the operating efficiency is extremely low under partial load, resulting in a large amount of energy waste and environmental pollution. The existing fixed-speed diesel generators have the following disadvantages: (1) The diesel engine always works at a higher rated speed to maintain the power frequency voltage, and the diesel engine spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/30H02P9/48H02P21/22H02P101/25
CPCH02P9/30H02P9/48H02P21/0003H02P21/22H02P2101/25
Inventor 刘金虹徐海波王一丁孔铭王雪帆张辉
Owner EAST GRP CO LTD
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