Last year, I saw the patent propaganda in this area at the national exhibition, which seemed to be called "Chiayi Lai", but when asked about the principle, the answer was vague and full of loopholes.
Some literatures have studied the function of energy saver, but it can never reach the said 40%.
The basic principle of power saving is as follows:
1
Instantaneous flow and its harm
The main characteristics of instantaneous flow are ultrahigh pressure, instantaneity and high frequency. test
It shows that the instantaneous voltage is generally 5~ 10 higher than the normal voltage.
Times, the highest
It can reach tens of thousands of times. Because the generation time of instantaneous flow is very short, it
You can even finish the whole process in a billionth of a second, so
It's hard to suppress. In addition, the activity of instantaneous flow is quite frequent.
Numerous, that is, the frequency of production is particularly high.
The generation of instantaneous flow will affect the safe operation of equipment, and instantaneous flow will cause
The hazards mainly include the following aspects:
( 1)
Reduce system efficiency. The experiment shows that the instantaneous current adopts electric system.
The efficiency of the system has dropped by 30.
More than%. Instantaneous flow affects switches, contact elements,
Winding semiconductor devices and so on has a great influence, which makes motors, lamps
The efficiency of electrical equipment decreases. In addition, due to the long-term instantaneous current shock
Strike, make the contact device produce oxide layer, if the contactor is on the motor.
Resulting in an oxide impedance of 1ω.
, the motor efficiency loss is 13.
%。 Ruzai
120v, 15A
The frequency of the instantaneous current in the circuit is 4.
Ten thousand/
Hours,
The duration is 100.
Microseconds,
Line loss increases.
8 105
%。
(2)
The motor temperature rises. The temperature rise of the motor is mainly due to instantaneous.
Current increases the current loss and copper loss of inductive load.
Yes Experiments show that 800
Time/
The second oscillating instantaneous current makes the iron core material
Energy consumption of materials ranges from 0 104W/
h
Increase to 3W/
h
,
Increased energy consumption
67
%。 Due to the influence of instantaneous high voltage, excess electric energy is converted into heat.
Yes, the motor running temperature rises, and the motor temperature rises 1.
C, about the increase
Consumption 4
% of the electricity.
(3)
Accelerate the electric meter. The torque to drive the meter depends on
Due to the magnitude of voltage and current in the circuit, the instantaneous current is sudden.
Overvoltage will lead to a sudden change in torque, which will lead to an increase in the speed of the meter.
Let's go Experiments show that the instantaneous flow makes the hands turn faster and faster.
Over-measured, the highest range can reach 30.
%。
2
Cause of instantaneous flow
There are external and internal reasons for the instantaneous flow. Outside
Part of the reason is the opening and closing of large switches and the approach of large loads in transmission substations.
This part of instantaneous flow accounts for 20% of the total instantaneous flow of the system.
%~
30
%。 The internal reason is that all loads will start, stop and run.
A large amount of instantaneous current is generated and fed back to the system, which is about
70%
%~80
%。 Due to poor contact or loose electrical connection
The generated high-frequency voltage spikes will also affect the whole system, resulting in
Instantaneous flow
three
Power saving principle of system power saver
System economizer can eliminate the pollution of instantaneous current to power system.
System economizer saves electricity by buffering, cooling and cleaning instantaneous current.
Net three aspects of comprehensive action to achieve.
( 1)
Buffer saves electricity. The system economizer will perform external instantaneous flow.
Cut off, or cut off the internal circuit, so as to cut off the instantaneous current call.
The jumping impact of the table can save electricity.
(2)
Cool down and save electricity. Due to the influence of instantaneous current, the core material is affected by the following factors.
Excessive hysteresis increases the current, leading to an increase in motor temperature and power consumption.
The efficiency drops. Clamping voltage between live wire and neutral wire of system economizer
The voltage is 275 volts.
, all above 275V V v.
The voltage is suppressed and controlled.
Overvoltage minimizes the impact of voltage on load and system.
Degree, keep the motor temperature no longer rise.
(3)
Clean and save electricity. After installing the system economizer, make the contactor
No oxide layer is generated in the circuit, and even the surface of the contactor can be made.
The formed oxide layer gradually falls off, thus improving the power consumption of the system.
Efficiency.
four
Interception instantaneous flow principle
In order to prevent instantaneous current, the system economizer needs:
( 1)
The reflection speed is faster than the instantaneous flow, mainly using high-tech and semi-technology.
The conductor element makes its reflection speed faster than that of the computer.
Times;
(2)
The clamping voltage should be low enough to ensure that the peak voltage is not high.
You can also intercept instantaneous traffic.
five
label
With the development of frequency converter and uninterruptible power supply (UPS)
Isoelectron and rectification
With the wide application of equipment, the pollution of industrial electricity is becoming more and more serious.
This will be a new choice for the system economizer to save electricity.