[The most complete] How to achieve synchronous output of DC stabilized power supply
Release time: 2019-10-25
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In order to achieve the output synchronization of the DC stabilized power supply, a synchronous zero-voltage switch must be realized first, that is, the corresponding phase of the standby power grid is only switched on when the cut-off grid voltage corresponding phase voltage crosses zero. It has been extended to the 50 Hz city power range. The issue of zero-voltage switching will be discussed later. Here, two generators supply power to two computers respectively, and the third motor G8 is standby (idling). When the two motors When the operation is normal, the indicator light Lz is on, and the output voltage is abnormal. For example, if the voltage is faulty, the controller immediately measures it, cuts off the control signals of Sll-S18 and adds control signals to S81-S38. After the machine is replaced, the indicator light is off and L81 is on after the motor is replaced, which indicates that the same is true for G8 instead of GB instead of Gi, and it can still be exchanged when S is abnormal. If the voltage is not faulty, it is a normal replacement maintenance. You only need to push (or press) the replacement rotary switch (or button). Of course, you can use the electronic switch and contactor in combination to reduce the size and power consumption. That is, use the electronic switch when changing the machine. After the connection process is completed, close the contactor or the gate knife. To change the machine, first pull off the contactor or the gate knife, but use heat pipe technology to dissipate heat. Its volume is not much larger than a contactor of the same capacity. In this way, the above-mentioned electronic switch connection technology is used to remove the maintenance time MTTR from the reliability formula. To some extent, the requirements of AC uninterruptible power supply have been realized, which is the fault intensity and maintenance rate of AC power supply systems. However, since the maintenance time MTTR is reduced to zero in both DC and AC systems, Po is also 1. In this way, a power supply system composed of DOHRS and UPS-like is stable. How to achieve the synchronous output of the DC stable power supply can surely ensure that the computer will not be stopped due to a power supply system failure within the specified working time.
： You might want to know :
AC stabilized power supply is also called AC voltage regulator. With the development of electronic technology, especially after the application of electronic computer technology to various industrial and scientific research fields, various electronic equipment requires a stable AC power supply. The direct power supply of the grid can no longer meet the needs. One question. Commonly used AC stabilized power supplies are:
①Ferromagnetic resonance AC voltage regulator. It is composed of a saturation choke and a corresponding capacitor, and has constant voltage volt-ampere characteristics.
② Magnetic amplifier type AC voltage regulator. The magnetic amplifier and the autotransformer are connected in series, and the impedance of the magnetic amplifier is changed by using an electronic circuit to stabilize the output voltage.
③Sliding AC voltage regulator. The output voltage is stabilized by changing the position of the transformer's sliding contacts.
④ Inductive AC voltage regulator. The output AC voltage is stabilized by changing the phase difference between the transformer secondary and primary voltages.
⑤ Thyristor AC regulator. A thyristor is used as a power adjustment element. High stability, fast response and no noise. However, it causes interference to communication equipment and electronic equipment.If Shijiazhuang Shuying Instrument Co., Ltd. prepared this "How to achieve synchronous output of DC stabilized power supply" is helpful to everyone, I hope to collect it. If there are any deficiencies, I also hope you can point us out. Let us make more progress.