阅读说明：本技术 节能发电机组 (Energy-saving generator set ) 是由 周挺巧 周勤毫 周密 谢安慧 徐富 于 2020-07-16 设计创作，主要内容包括：本发明涉及节能发电机组,包括有原动力发动机,还包括有整流发电机、调速机构、励磁调节器,原动力发动机与整流发电机连接拖动整流发电机发出直流电,所述发电机组中还设有用于接收整流发电机所发直流电的电压信号并通过励磁调节器调节整流发电机的电压信号、通过调速机构调整原动力发动机转速的控制中心,励磁调节器一端连接整流发电机另一端连接控制中心用以稳定整流发电机所发直流电电压,不需要以稳定转速来达到工频频率的稳定,频率由逆变器来决定,这样我们就可以自由改变转速而不影响频率,轻载时就可以降低速度来达到节省油耗的目的。(The invention relates to an energy-saving generator set, which comprises a prime power engine, a rectifier generator, a speed regulating mechanism and an excitation regulator, wherein the prime power engine is connected with the rectifier generator to drag the rectifier generator to generate direct current, a control center for receiving a voltage signal of the direct current generated by the rectifier generator, regulating the voltage signal of the rectifier generator by the excitation regulator and regulating the rotating speed of the prime power engine by the speed regulating mechanism is also arranged in the generator set, one end of the excitation regulator is connected with the rectifier generator, the other end of the excitation regulator is connected with the control center to stabilize the voltage of the direct current generated by the rectifier generator, the stabilization of power frequency is not required to be achieved by stabilizing the rotating speed, the frequency is determined by an inverter, so that the rotating speed can be freely changed without influencing the frequency, and the speed can be reduced.)

1. Energy-conserving generating set, including the motive power engine, its characterized in that: the generator set is also provided with a control center which is used for receiving a voltage signal of the direct current generated by the rectifier generator, adjusting the voltage signal of the rectifier generator through the excitation regulator and driving the speed adjusting mechanism to adjust the rotating speed of the prime power engine according to the voltage signal and a current signal generated by a load, and one end of the excitation regulator is connected with the rectifier generator and the other end of the excitation regulator is connected with the control center to stabilize the direct current voltage generated by the rectifier generator.

2. The energy efficient generator set of claim 1, wherein: the direct current power supply system is characterized by further comprising an inverter device, the inverter device is used for converting direct current power generated by the rectifier generator into alternating current power and then outputting the alternating current power, and one end of the control center is connected with the inverter device.

3. The energy-saving generator set of claim 1 or 2, wherein: the control center comprises a single chip microcomputer, a setting module for setting preset voltage and frequency, a display module for displaying current voltage and frequency, a forward and reverse PWM speed regulating circuit and a current and voltage signal sampling circuit, wherein the single chip microcomputer is connected with the speed regulating mechanism through the forward and reverse PWM speed regulating circuit and is connected with the rectifying generator through the current and voltage signal sampling circuit to obtain current and voltage signals of the rectifying generator.

4. The energy efficient generator set of claim 3, wherein: the speed regulating mechanism is a motor.

5. The energy efficient generator set of claim 4, wherein: the prime power engine is a gasoline engine or a diesel engine or a wind power engine or a hydraulic engine.

6. The energy efficient generator set of claim 2, wherein: the inverter is an inverter.

Technical Field

The invention relates to the field of generator sets, in particular to an energy-saving generator set.

Background

At present, a power frequency generator is adopted in common generator sets, the frequency of the power frequency generator is constant, the rotating speed of the generator set is necessarily constant in order to maintain constant frequency, the rotating speed of the generator set is basically fixed and unchanged when the generator set is under light load and heavy load, the oil consumption ratio is greatly increased when the generator set is under light load, the oil consumption is high, the noise is high, domestic electric voltage with the frequency of 50Hz and the voltage of AC220V is adopted in China, but the frequency of 60Hz and the voltage of AC240V are adopted in part of countries, the rotating speed of an original engine of a traditional generator set is required to be increased by 20% when the traditional generator set is used in an export, so that the working frequency of 60Hz is reached, more accessories are required to be changed, the.

Disclosure of Invention

The technical problem to be solved by the present invention is to solve the above-mentioned deficiencies of the prior art,

an energy-saving generator set is provided.

In order to achieve the purpose, the invention provides the following technical scheme: energy-conserving generating set, including the motive power engine, its characterized in that: the generator set is also provided with a control center for receiving a voltage signal of the direct current generated by the rectifier generator, adjusting the voltage signal of the rectifier generator through the excitation regulator and driving the speed adjusting mechanism to adjust the rotating speed of the prime power engine according to the voltage signal and a current signal generated by a load, and one end of the excitation regulator is connected with the rectifier generator and the other end of the excitation regulator is connected with the control center for receiving an instruction of the control center so as to enable the voltage generated by the rectifier generator to accord with the optimal direct current voltage of the inverter circuit.

By adopting the technical scheme, the generator set on the market generally uses a power frequency generator, the generating voltage of the generator set and the rotating speed of a prime power engine are basically constant, so that the oil consumption ratio is greatly increased under light load, the noise is always high, the oil consumption ratio is increased under light load, redundant energy is wasted, the generating cost is increased, and resources are wasted. Meanwhile, the noise can be greatly reduced, the service life of the whole machine is prolonged, the direct current voltage generated by the excitation regulator when the prime power engine runs at idle speed or low speed can be stable, domestic electric voltage with the frequency of 50Hz and the voltage of AC220V is adopted in China, but the frequency of 60Hz and the voltage of AC240V are adopted in some countries, the rotating speed of the original engine needs to be increased by 20% when the traditional generator set is used in an export way so as to achieve the working frequency of 60Hz, more accessories need to be changed, the engine needs to bear larger pressure, and the cost is increased. The invention can control the inverter circuit to make corresponding adjustment only by setting parameters in the control center without changing any hardware, and can adapt to the frequency and voltage of the export destination country, and the adjustment is quite simple, easy and accurate.

The energy-saving generator set can be further provided with: the direct current power supply system is characterized by further comprising an inverter device, the inverter device is used for converting direct current power generated by the rectifier generator into alternating current power and then outputting the alternating current power, and one end of the control center is connected with the inverter device.

By adopting the technical scheme, the direct current generated by the rectifier generator can be converted into alternating current to be output by arranging the inverter.

The energy-saving generator set can be further provided with: the control center comprises a single chip microcomputer, a setting module for setting preset voltage and frequency, a display module for displaying current voltage and frequency, a forward and reverse PWM speed regulating circuit and a current and voltage signal sampling circuit, wherein the single chip microcomputer is connected with the speed regulating mechanism through the forward and reverse PWM speed regulating circuit and is connected with the rectifying generator through the current and voltage signal sampling circuit to obtain current and voltage signals of the rectifying generator.

By adopting the technical scheme, the single chip microcomputer obtains current and voltage signals of the rectifier generator through the current and voltage sampling signal circuit, converts the current and voltage signals into power signals, and controls the speed regulating mechanism through the forward and reverse PWM speed regulating circuit according to the power, so that the speed regulating mechanism regulates the rotating speed of the prime power engine.

The energy-saving generator set can be further provided with: the speed regulating mechanism is a motor.

By adopting the technical scheme, the speed regulating mechanism is set as the motor, so that the cost is lower.

The energy-saving generator set can be further provided with: the prime power engine is a gasoline engine or a diesel engine or a wind power engine or a hydraulic engine.

Adopt above-mentioned technical scheme, above-mentioned several kinds of engines are comparatively common, easily purchase the equipment, convenient control cost.

The invention has the beneficial effects that:

1. the power frequency is stable without a stable rotating speed, the frequency is determined by an inverter, so that the rotating speed can be freely changed without influencing the frequency, and the speed can be reduced under light load to achieve the aim of saving oil consumption;

2. the rectifier generator has multiple poles, so that the frequency, high power and high density are high, the size of the generator is greatly reduced, the weight is reduced, and a large amount of nonferrous metals can be saved. The whole machine cost is reduced, and the generating efficiency is improved;

3. the direct current or alternating current can be generated according to actual conditions to determine whether an inverter circuit is additionally arranged, and if the inverter circuit is not additionally arranged, the direct current is output.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of the present invention.

Fig. 2 is a schematic diagram of a second embodiment of the present invention.

Fig. 3 is a schematic diagram of the control center principle of the first and second embodiments of the present invention.

Detailed Description