What hardware do you need for a homemade inverter? 20

One: Then I wanted to make my own inverter and now ask what hardware do you need?

Inverter trigger circuit boards, and inverter main circuit components.

Two: I am a person who doesn't know anything about electricity, but I just make one to myself with my own interests, can I make it? And how much does it cost to do this? In addition to the battery, the battery of my electric car can be used.

No, it is very difficult, especially for trigger circuit manufacturing and IGBT coordination design. And the cost is high, not a problem with the battery.

Three: To do this, you generally need to buy a meter to measure the voltage. Something.

Multimeter. Four: I saw some people say that using a relay, the inverter output and the mains power can be connected in parallel to realize the mains power outage.

After switching to the inverter power supply to cut off the mains power, if there is no indicator light, the mains power failure is not noticed, how long does this switching process take, not relays, UPS, is an important external device that can provide continuous, stable and uninterruptible power supply. UPS is divided into three categories: backup, and interactive according to the working principle. UPS, as the name suggests, is one such machine, which can maintain a period of power supply when the power stops, so that people have time to save the disk, and then calmly turn off the machine.

UPS power supply, divided into ** type and backup type, etc., when the machine has electricity to work, it will be the mains AC inverter, and stored in its own power supply, once the power supply is stopped, it can provide power supply, so that the computer can maintain a period of work, the holding time may be 10 minutes, half an hour, etc.

Five: I also know that there is an uninterruptible power supply, I originally thought that there is only one inverter and have to switch manually, is it only a relay can solve this problem, assuming that it can be solved, then is the charging of the battery is also very easy to solve, to a certain voltage charge higher than how much to stop charging?

Relay switching needs to be operated after shutdown, and it cannot be operated uninterruptedly.

Battery charging needs to control the current during charging, otherwise the battery will be burned.

Three machine tubes are indispensable, hehe!!

The following diagram is a circuit diagram of a simple inverter. It features a common collector circuit that allows the collector of the triode to be mounted directly on the casing for easy heat dissipation. It is not easy to damage the transistor.

Manufacture of transformer: You can choose a control transformer for machine tools according to your own needs. I use a 100w control transformer.

Disassemble the transformer core and remove the secondary coil. and record the number of laps per volt. The secondary coil is then rewound.

The enameled wire used is first wound around a 22V coil and tapped in the middle, which is the main coil. The re-used enameled wire is wound around two 4V coils for feedback coils, and the layers of the coils are insulated with thicker kraft paper. After the coil is wound, insert the core.

Connect the two 4V secondary stages to the main coil separately, and note that the pin connection of the head and tail is reversed. It can be energized to measure the voltage. If the voltage increases after the 4V coil and the main coil are connected, it means that the connection is correct, and vice versa.

The connector can be replaced. So that the transformer is done.

Selection of resistance. Two resistors connected in series with a 4V coil can be made with resistance wires. The size of the resistor can be selected according to the output power, generally a few ohms.

When the output power is large, the resistance is smaller, and the bias current resistance is 300 ohms of 1W. It works without this resistor. However, due to the inconsistent parameters of the tube, sometimes it does not vibrate, and it is better to take one.

Triode selection: three 3DD15 in parallel on each side. Six tubes are shared. After the circuit is connected, check that there are no errors, and you can power on and adjust.

Connect the battery and find a 100W incandescent lamp for the load. Turn on the switch and the bulb should glow normally. If it does not emit light normally, the resistance of the base can be reduced.

until it can glow normally. Then connect the color TV to see if it can start normally. Not starting properly is also a reduction in the resistance of the base.

After the adjustment, it can be used normally.

My inverter and charger are made in one chassis, and the outputs are connected in parallel to the AC power supply at home. And installed a relay, when the power fails, it can automatically switch to the inverter to supply power, and cut off the external circuit, and automatically connect the AC power to cut off the power supply of the inverter and turn into the charging state when the call comes. If there is no power outage call status indicator, you will not feel it when a power outage is called.

Make 600w sine wave inverter, the machine has the following characteristics:

The driver core uses a single-chip microcomputer SPWM chip, TDS2285, so the SPWM driver part is relatively simple compared to pure hardware, and there are few things to debug after the production is completed, so it is easier to succeed.

2.All PCBs are made of single-sided panels, which is convenient for everyone to make, because many enthusiasts will make their own single-sided PCBs, some use photosensitive methods, some use thermal transfer methods, etc., so that you don't have to trouble PCB manufacturers, you can make them at home, of course, the main purpose is to save money, and now PCB manufacturers are too good.

3.All the components and materials of the machine can be bought online, it is really convenient to shop online, express delivery to home, what do you want.

If the PCB is not wrong, if there is no problem with the components, if you have a certain foundation for the inverter, I guarantee that you will succeed in making it, of course, there are many things to do by yourself, you can enjoy the fun of doing it yourself.

4.The power is only 600W, generally speaking, the power is easy to succeed, and it can be used for experiments and has a certain degree of practicality.

1. Circuit principle:

The inverter is divided into four parts, each part of which makes a PCB board. They are "power motherboards"; "SPWM Driver Board"; "DC-DC Driver Board"; Protection Plate.

1.Power Motherboard:

The power motherboard includes two parts: DC-DC push-pull boost and H-bridge inverter. The BT voltage of the machine is 12V, when the power is full, the pre-stage working current can reach more than 55A, the DC-DC boost part uses a pair of 190N08, this 247 package of cattle tubes, as long as the heat dissipation is in place, a pair can output 600W, you can also use IRFP2907Z, the output capacity is about the same, ** is also about the same. The main transformer uses the core of EE55, in fact, as far as 600W is concerned, EE42 is enough, for the convenience of winding, plus EE55 is existing, EE55 is used.

Regarding the winding of the main transformer, we will introduce it in detail below. The power supply of the push-pull part of the front stage adopts a symmetrical balance mode, which has two advantages, one is to ensure the symmetry of the working state of the two power tubes at high current, and to ensure that there will be no unilateral heating phenomenon; Second, it can reduce the current density of the tin layer on the reverse side of the PCB, and of course, it can also greatly reduce the interference caused by current imbalance. High-voltage rectifier fast diode, using RHRP8120 in TO220 package, this kind of tube is very reliable, I use a second-hand tube, only 1 yuan a piece.

The high-voltage filter capacitor is 470uF 450V, and if possible, the capacity used is as large as possible to improve the load characteristics of the high-voltage section and reduce interference. The H bridge part uses 4 IRFP460, withstand voltage 500V, maximum current 20A, can also be replaced by a tube with similar performance, and the inverter efficiency of the whole machine can be improved by using a tube with small internal resistance. The conventional circuit used in the H-bridge section is used.

Go and see for yourself the references.

The inverter converts direct current energy (battery, storage battery) into alternating current (generally 220V, 50Hz sine wave). It consists of an inverter bridge, control logic, and filter circuitry.

The inverter is a DC-to-AC transformer, which is actually a voltage inverter process with the converter. The converter converts the AC voltage of the grid into a stable 12V DC output, while the inverter converts the 12V DC voltage output by the adapter into high-frequency high-voltage AC power; Both parts also use the more widely used Pulse Width Modulation (PWM) technique. The core part is a PWM integrated controller, the adapter uses UC3842, and the inverter uses TL5001 chip.

The operating voltage range of TL5001 is equipped with an error amplifier, a regulator, an oscillator, a PWM generator with dead zone control, a low-voltage protection loop and a short-circuit protection loop.

There are two types of inverters: low-frequency and high-frequency.