Efficient control device for power factor of diesel generator set

Abstract

The invention discloses an efficient control device for a power factor of a diesel generator set, and belongs to the field of generators. The existing system is poor in operability, prone to make errors, poor in accuracy and low in response speed. The device is characterized in that one end of a voltage and current sampling and amplitude conversion unit is sequentially connected with a rectifyingcircuit unit, a capacitor filtering unit, a resistor gear setting unit, a hysteresis comparison unit, a capacitor switching unit and a capacitor bank unit; the output end of the capacitor bank unit isconnected the power output end of a diesel generator set unit and then connected with the other end of the voltage and current sampling and amplitude conversion unit. According to the invention, theadjustment range of the power factor of the diesel generator set can be expanded, over-compensation or under-compensation can also be avoided, the system is enabled to be simple in structure, lower incost and higher in reliability, and errors and time delay can also be reduced.

Description

technical field [0001] The invention relates to the field of generators, in particular to a high-efficiency control device for the power factor of a diesel generator set. Background technique [0002] With the rapid development of global industry and the sharp increase in energy demand, the power supply is also increasing. Diesel generators are used because of their advantages such as stability, long-term use, low failure rate, and relatively balanced fuel consumption when working conditions change. Many power generation units and enterprises are widely used. However, since the diesel generator set operates off-grid and works in an isolated state, the capacity of the power generation system constituted by it is relatively low. When a large number of load devices that consume reactive power are connected, the power factor of the generator output is greatly reduced, and the output The active power is relatively small. For the power generation field, it is always hoped to use ...

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the deficiencies of the above-mentioned prior art, and provides a high-efficiency control device for the power factor of diesel generator sets. By using the electric resistance setting unit to select the switching capacitor group according to the difference in amplitude, the system is increased. Response speed and stability; through the switching of the capacitor unit, the adjustment range of the power factor of the diesel generator set can be expanded; it effectively solves the operability and accuracy caused by the power factor calculation and single-chip processing. Poor accuracy, slow response and error-prone technical problems

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