Substation inverter 5, substation inverter

The inverter is mainly used to convert the direct current in the battery into alternating current for the lighting in the substation after the power loss of the substation (that is, the substation Reed accident lighting).

in a substation; DC is mainly used for the operation and control power supply of substation equipment in the substation. The AC power supply is mainly the daily lighting and accident lighting in the station, as well as the device power supply of protection devices and automatic devices.

Under normal operating conditions, the battery is in a floating state (that is, a self-sustaining state). When the substation is blacked out, the battery is in a state of discharge. If the substation is blacked out, the battery is generally allowed to run for more than 48 hours.

The inverter is used when DC converts AC. The substation is equipped with a DC system and an inverter to achieve emergency power in the event of an accident**, and under normal circumstances, the DC system is in a charging state. When there is a power outage, the charged battery passes through the inverter to change the DC into AC power to ** emergency lighting UPS needs.

Generally, the battery in the substation can be used for two to three hours.

1. The working principle of the inverter is to amplify the input DC through the IC high-frequency output to promote the MOS tube to convert into high-frequency alternating current, and then boost the voltage through the high-frequency transformer, and then use the fast recovery diode to rectify it into DC, and finally convert the post-stage IC and power tube into alternating current of the required voltage and frequency.

2. The inverter circuit is the opposite of the rectifier circuit, and the inverter circuit converts the DC voltage into the AC voltage of the desired frequency, and turns off the power switching devices of the upper and lower blocks at a determined time. Thus, the three-phase AC voltage with a phase difference of 120° electrical angle can be obtained on the output U, V, and W phases.

You still don't know what the concept of AC and DC is: at present, household appliances are basically 220V AC appliances. If changed to DC 220V.

The electrical appliances in the house must be crackling, lightning and thunder. DC is considered a short circuit to an inductive load. Incandescent lamps are still normal; Since the power goes out, the battery must be powering the inverter.

How long it can be used depends on the battery capacity and the size of the electric load

The on-board inverter (power converter, PowerInverter) is a convenient vehicle power supply converter that can convert DC12V DC power to AC220V AC power that is the same as the mains power supply, and is used by general electrical appliances. Here's an introduction to the inverter: Hyosona.

1. The on-board inverter output through the cigarette lighter can be 20W, 40W, 80W, 120W until 150W power specifications. Some power inverter power supplies should be connected to the battery through the connecting wire;

2. When purchasing a vehicle inverter, it is necessary to pay attention to whether it is a pure sine wave vehicle inverter or a modified wave vehicle inverter, which is mainly divided according to the waveform of the output current of Sakura Heng, ** is also different, the pure sine wave vehicle inverter belongs to the high-end, the modified wave vehicle inverter belongs to the low-end, pure sine wave vehicle inverter, and the application range is wider;

3. It is not recommended to take electrical appliances greater than 120W from the cigarette lighter, the cigarette lighter can only withstand a current of about 10A about 100W, because the battery to the cigarette lighter is connected by a wire of about 2 meters, and the negative pole of the battery is connected to the shell of the car, which loses too much voltage and current. The inverter refuses to start when it detects the voltage and current that cannot maintain its start-up operation, and the best working voltage of the inverter is 11-13V.

Millions of car purchase subsidies.

The principle of the inverter is as follows:An inverter is a DC-AC transformer, and in fact, like a converter, it is a process of voltage inversion. The converter converts the AC voltage in the grid into a 12 V regulated DC, while the inverter converts the 12 V DC of the adapter into a high-frequency AC, both of which use the more commonly used PWM technology.

An inverter is a type of side or AC power that converts low voltage (12 V, 24 V, 48 V) into 220 V, because 220 V AC is generally rectified to direct current, while the inverter is the opposite, hence the name.

This is a "mobile" era, mobile phone office, mobile phone communication, mobile phone leisure, entertainment, in the process of sports, not only to use the battery or battery to provide high-voltage DC power supply, but also to use 220 V AC power supply, which is indispensable in life.