Frequency conversion power device for cutting motor of roadheader
A technology for cutting motors and power devices, which is used in output power conversion devices, conversion of AC power input to DC power output, electrical components, etc. At the same time, taking into account the maintenance and other issues, to achieve the effect of high power density, high fast maintainability, and small size
Active Publication Date: 2017-06-23
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology
Therefore, ordinary flameproof frequency converters cannot meet the needs of high power density and maintainability of roadheaders, and cannot be transplanted into the electric control box of roadheaders for use.
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0022] figure 1 It is a schematic diagram of the front view of the frequency conversion power device for the cutting motor of the roadheader according to the embodiment of the present invention, figure 2 It is a top view schematic diagram of the frequency conversion power device for the cutting motor of the roadheader according to the embodiment of the present invention. Such as Figure 1-2 As shown, in this embodiment, the frequency conversion power device for the cutting motor of the roadheader includes a flameproof electric control box 1 and a frequency conversion power module arranged in the flameproof electric control box 1 . Wherein, the flameproof electric control box 1 is provided with a front door 101 and a si...
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The invention discloses a frequency conversion power device for a cutting motor of a roadheader, which comprises a flameproof electric control box and a frequency conversion power module arranged in the flameproof electric control box. The flameproof electric control box is provided with a side door and a The front door, the front door and the side door are respectively arranged on two adjacent side walls of the flameproof electric control box, the side door is a hinged door that can be opened and closed, and the hinge of the side door is arranged on the opposite side wall of the front door Edge, the frequency conversion power module includes a side door moving assembly and a cabinet fixed assembly, the side door moving assembly includes power semiconductor devices, and the side door moving assembly is arranged on the inner wall where the side door of the flameproof electric control box is located, so The fixed components in the cabinet include capacitor components and control circuits, and the fixed components in the cabinet are arranged in the flameproof electric control box. The frequency conversion power device for the cutting motor of the roadheader is small in size, high in power density, and convenient for underground maintenance.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to a frequency conversion power device for cutting motors of roadheaders. Background technique [0002] The roadheader is an important equipment for underground coal mine operations, and it continuously breaks rocks through the main cutting motor. At present, the main cutting motor adopts the speed regulation method of variable pole logarithm for speed regulation. The variable pole logarithm speed regulation method changes the number of motor stator pole pairs by changing the wiring mode of the motor stator winding, thereby achieving the purpose of speed regulation. This method belongs to step speed regulation, and its step difference is large, so that the main cutting motor of the roadheader cannot obtain smooth speed regulation characteristics, and cannot meet the needs of various grades of rock formations during excavation work, affecting production progress. [0003]...
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IPC IPC(8): H02M7/00H05K7/20
Inventor 彭凯王洪峰范伟李雪荣陈锋李彦涌许浩
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST