Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-04-08 Hits: Popular:AG11 battery
A low-cost, high-reliability inverter power circuit design
How to integrate the cheapest components while ensuring their reliability is the key to circuit design. This article introduces the design of a single-input and three-output inverter, which can drive three-phase cage asynchronous motors below 1kW. After slight modification, it can be used to drive brushless DC motors. The article also introduces the selection of key components in the design to help engineers achieve high reliability with the cheapest components.
This article summarizes the design points of a relatively mature circuit obtained after nearly a hundred modifications, including microprocessors, power devices, half-bridge drivers, overcurrent protection, control methods, test results, etc. The variable frequency speed regulation achieved by this circuit can greatly expand its application scope due to its low cost, and can be used to drive brushless DC motors with slight modifications.
The design of the inverter circuit is similar, generally using the AC-DC-AC method, which consists of four parts: rectification, intermediate DC link, inverter and control. The industrial frequency AC power supply is first converted into DC power supply through the rectifier, and then the DC power supply is converted into a DC power supply. The power is converted into AC power with controllable frequency and voltage to supply the motor. Frequency converters generally use intelligent power modules (IPM), and many electronics companies have their reference designs. As long as the software and hardware are used, there is not much design risk, but there is a cost, which limits the use of frequency converters in applications such as industrial sewing machines and desktops. Drilling machines and other applications that require speed control but are cost-sensitive. In low-power situations, using 6 discrete field effect tubes or IGBTs is a good choice, which can greatly reduce costs, but its reliability issues are very prominent, and tube explosion is the biggest headache for designers. How to integrate the cheapest components from different companies while ensuring their reliability is the key to circuit design.
Main circuit design
1. Selection of half-bridge drive solution
There are two types of half-bridge drive circuits: isolated and non-isolated. The non-isolated solution has a simple circuit, but the high voltage of the main circuit can easily escape into the control circuit and cause an accident. Using the IR2105 bipolar SPWN modulation method, it is still very difficult to drive a motor below 370W. reliable. The isolation solution increases the cost. Isolation drivers include transformer drive and optocoupler drive. The transformer switching speed is fast, but when the duty cycle of the inverter output changes between 0% and 100%, modulation method must be used. Low-power The occasion is not necessary. Although the switching speed of the optocoupler driver is slower, the switching time is about 0.5μS. The allowed switching speed of IGBT is generally below 40kHz. In practical applications, it does not necessarily have to be so high. Therefore, optocoupler isolation is used to drive the upper tube and is used below 1kW. The motor is a cost-effective solution.
2. Use of driver chips
IR210x is one of IR's many driver IC families. It can work in circuits with bus voltages up to 600V, and the price is only 2 yuan. The driving signal is compatible with TTL and MOS levels. An IR210x can be used to complete the driving task of two power components. It uses bootstrap technology internally, so that the driving circuit of the power component only needs one input stage DC power supply, which can realize the power MOSFET and IGBT. The driver also has certain protection functions. The circuit is shown in Figure 1.
Read recommendations:
The difference between 18650 lithium battery and 32650 lithium battery.18650 battery 1800 mah
Last article:18650 lithium rechargeable battery
Next article:Nickel Metal Hydride No. 5 battery
Popular recommendation
Nickel Hydride Batteries direct sales
2023-03-22Nickel Hydride Batteries
2023-03-22battery 18650 genuine
2023-03-22602030 battery manufacturer
2023-03-2218650 lithium battery cells
2023-03-22LR03
2022-08-19Coin Battery LR 726
2022-10-15R03P
2022-08-19Ni-MH AAA600mAh 1.2V
2022-07-01601525 170mAh 3.7V
2022-08-19R03P
2022-12-0114500 450MAH 3.7V
2022-10-15702535 600MAH 3.7V
2023-06-10803040 1000mAh 3.7V
2022-08-193.2V 50Ah
2022-10-12CR2032 button cell battery
2023-06-25NiMH battery pack
2023-08-04102450 lipo battery
2023-06-25LR41 battery
2023-06-251.2V NiMH battery
2023-08-04How to Control the Cost of Lithium - ion Batteries
2024-11-19Standard for special low-temperature lithium batteries
2024-08-01Is lithium battery better or lead-acid battery better
2024-09-19902030 lipo battery.On the Self Protection Function of Lithium Batteries
2023-10-27The principle of ternary polymer lithium-ion batteries
2024-05-27Recycling process for lithium iron phosphate batteries after disassembly.CR927 battery
2023-08-21The production process of lithium battery.button cell battery cr1620
2023-07-18Can lithium-ion batteries only be charged and discharged 500 times?CR1130 battery
2023-06-28Battery capacity recovery method.battery 18650 rechargeable.button cell battery cr2025
2023-08-15Is the upside down soft package or hardware of lithium ion battery good?
2022-11-09