自营METSO备件IOP341规格型号

易卖工控网（www.ymgk.com）提供”METSO备件IOP341规格型号”，产品详情：品牌/厂家：METSO、型号：IOP341、成色：全新、货期：现货 1天内发货、保修：180天，更多产品详情就上易卖工控网。

IOP341  IOP341   IOP341  IOP341  IOP341  IOP341  IOP341  IOP341  IOP341PIC16F877 is the most complete microcontroller in PIC16F87X series chips produced by Microchip Company in the United States. It enables online debugging and online programming, internally with 8-way 10-bit A/D converters, 8K VERSIONS of YOJO 14 FLASH program memory,368 VERSIONS of YOJO 8 RAM,256 VERSIONS of YOJO 8 EEPROM,14 interrupt sources and 3 timing/counters, and up to 15 peripheral modules integrated within the chip, so the peripheral circuitry is greatly simplified. Cost reduction.

Basic working principle of self-shunt microcomputer excitation regulator

Generator excitation power from the generator end, after the excitation transformer LB step-down, silicon controlled rectifier KZL rectifier to the generator excitation. Automatic excitation regulator based on TV in the export of generator voltage transformer current transformer TA acquisition of voltage, current signal and other input signal, the regulation of according to pre-determined standards control trigger three-phase thyristor rectifier bridge phase shifting pulse, to adjust the excitation current of generator, makes the automatic voltage regulator in stand-alone runtime, The reactive power can be adjusted automatically when connected to the grid to improve the stability of the power system.

Generator of UAC line voltage and phase current IB respectively after transmitting voltage transformer and current transformer, the phase detector circuit to produce voltage cycle of square wave pulse electric current and voltage phase difference of the square wave pulse signal sent PIC16F877 micro-controller, the two pulse width is measured with a PIC of the counter, phase difference count value can be got, the grid power factor Angle. Then by looking up the table to get the corresponding power factor, further calculate the active power and reactive power.

The control unit selects A PIC16F877 microcontroller, because PIC16F877 microcontroller internal A/D conversion function, so as not to use the external A/D module, so as to reduce the external devices, reduce the cost, enhance the anti-interference ability. According to the real-time data of generator operating state variables collected from the input channel, PIC MCU makes control calculation and logical judgment, and obtains the control quantity. In the SCR rectifier circuit, the control circuit is required to output a series of pulses to the SCR control pole according to the phase of the AC power supply, so as to realize the smooth conduction and natural commutation of the SCR. The function of "synchronization and digital trigger control circuit" is to convert the SCR control Angle calculated by the computer CPU and represented by digital quantity into trigger pulse. By the power amplifier circuit will trigger pulse amplification to trigger silicon control, so as to control the excitation current.

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主营：shijie品牌的PLC 、DCS 系统备件 模块

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