Electricity-saving system capable of selecting and stably outputting voltage

Abstract

An electricity-saving system capable of selecting and stably outputting voltage comprises a multi-output voltage transformer, a voltage regulation controller, a plurality of voltage selection switches and at least one load controller. The primary winding side of the multi-output voltage transformer is connected to an input voltage through a plurality of tap switches. At the same time, only one tap switch is in an on state at each phase. The secondary winding side of the multi-output voltage transformer is provided with a plurality of output leads so that a plurality of output voltages with different voltage magnitudes can be generated. The voltage regulation controller can change the state of the tap switches so that the output voltages can accord with default voltage magnitudes. The voltage selection switches are connected between loads and the output leads respectively. At the same time, one load receives the output voltage of only one output lead. Input ends and output ends of the load controller are connected to the loads and the voltage selection switches respectively. The load controller switches the voltage selection switches according to the operation states of the loads so that the voltage magnitudes of the output voltages transmitted to the loads can be changed.

Description

technical field [0001] The present invention relates to a power-saving system, especially a kind that can detect the actual voltage value of the input voltage, and properly adjust the coil turns ratio between the primary winding side and the secondary winding side, so that the output voltage conforms to the expected voltage value, And according to the operating conditions of each load, the energy-saving device that supplies appropriate voltage to each load can be adjusted. Background technique [0002] With the vigorous development of domestic industrial and commercial industries, the demand for energy from enterprises has increased greatly. The main reason is that when building factories, computer rooms or commercial buildings (such as: department stores, mass merchandise stores), in addition to production or work place In addition to the required machines, other equipment such as: air conditioners, lighting equipment, elevators, etc. will also be used in larger quantities ...

AI Technical Summary

Problems solved by technology

However, in reality, no matter whether it is a machine, air conditioner, or lighting equipment, etc., it is impossible to operate at full capacity all the time, and it may change with time (such as: working hours, midnight) or the number of people. Light-load operation or no-load operation. Therefore, when the equipment is not in full-load operation, but still receives the working voltage required for full-load operation, it is not only a waste of energy, but also will cause the industry's production and business. cost increase

[0003] In addition, in addition to the foregoing, generally speaking, when a power company (such as: China's Taiwan Power Company) supplies power to the industry, the supply voltage (service voltage) it supplies will have a rate of change. Therefore, the equipment received The actual voltage value received may exceed the rated voltage (rated voltage), thereby causing damage to the equipment. For example, for electric motor (or motor) equipment, when the received voltage is higher than the rated voltage, it will cause starting The increase of current and torque will not only shorten the service life of the capacitors and other related parts in the long-term operation, but even burn them due to the high heat generated by the operation. Therefore, in order to make the equipment work normally Operation, equipment manufacturers usually reserve a safety margin when manufacturing equipment to allow the fluctuation rate of the power supply voltage. This will not only increase the installation cost of the equipment, but also often cause waste of electric energy. In addition, when the power supply voltage When the rate of change exceeds the safety margin of the equipment, it is bound to cause equipment damage

[0004] Based on the above, it can be seen that there are two power problems commonly faced by the industry at present. One is the fluctuation rate of the power supply voltage, which will cause the voltage received by the equipment to be not within the safety margin during operation (that is, not within the safety margin). Allowable working voltage), causing the equipment to operate under inappropriate working voltage, prone to damage or poor working quality; second, when the working state of the equipment (such as: full load, light load, no load) changes, its The received operating voltage has not changed, resulting in waste of electrical energy

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