The current-fed push-pull inverter circuit, as illustrated in Figure 1-1, sends the DC voltage through an inductor (L1) to the center tap of a transformer (Tr). The combination of L1 and the capacitor (C2) across the primary winding of Tr forms a resonant circuit. Meanwhile, resistors (R1 and R2) along with capacitor (C1) create a startup circuit. The underlying principle closely resembles that of Figure 1-2. Positive feedback between windings Np and Nb ensures that transistors VT1 and VT2 alternate their on/off states. In this design, the maximum voltage experienced by the collector of the switching transistor is roughly π times the DC input voltage (VDC). This makes the circuit ideal for regions like the U.S., Japan, and Taiwan, which typically have a mains supply of 110V, 120V, or 127V. The output from the transistors is a sinusoidal waveform, minimizing switching losses. Additionally, the secondary winding (NS) of the transformer produces a sinusoidal voltage. Even under open-load conditions or significant load variations, the inverter maintains stable operation. As depicted in Figures 1-1 and 1-2, even if one fluorescent tube malfunctions, the circuit continues to function without interruption. Motorola’s 1996 electronic ballast for dual-lamp setups employs this circuit configuration. Designed for two 32W cold cathode T8 tubes, it eliminates the need for auxiliary windings to preheat the filaments. The simplified circuit requires fewer components, making it both cost-effective and space-efficient. For instance, using an EE35 core for the transformer (Tr) and an EE19 core for the inductor (L1), the overall size remains compact while keeping production costs low. Figure 1-2 presents the detailed schematic of this circuit. It highlights how the startup circuit, consisting of C1, R1, and diode VD1, works alongside the high-frequency inverter comprising transistors VT1, VT2, transformer Tr, and capacitor C2. Transformer feedback ensures synchronized alternation between VT1 and VT2, resulting in reliable performance. Despite its simplicity, this circuit offers robust functionality and adaptability across different scenarios. This type of inverter circuit has been widely adopted due to its efficiency, reliability, and versatility. Its ability to handle diverse loads and maintain consistent output makes it particularly valuable in industrial and commercial lighting applications. Furthermore, advancements in component miniaturization continue to enhance its practicality and appeal for modern electronic designs. Whether powering traditional fluorescent lamps or emerging LED systems, circuits like these remain integral to efficient energy management solutions today. User Groups: solar power station,hybrid inverter,inverter for pv system,energy storage inverter,PV power station Bosin Power Limited , https://www.bosinsolar.com
1. Industrial Facilities: Large manufacturing plants, warehouses, and industrial complexes utilize solar inverters to integrate renewable energy into their power supply and reduce their reliance on traditional grid electricity.
2. Utility-Scale Solar Projects: Solar farms and large-scale solar installations use industrial solar inverters to efficiently convert and manage the electricity generated by numerous solar panels.
3. Commercial and Industrial Businesses: Companies in various industries, such as automotive, aerospace, and food processing, utilize solar inverters to reduce energy costs and carbon emissions.
Industrial Uses:
1. Powering Heavy Machinery: Industrial solar inverters are used to convert solar energy into usable electricity for powering heavy machinery and equipment in manufacturing and production processes.
2. Grid Integration: Solar inverters enable the seamless integration of solar power into the existing electrical grid, allowing industrial facilities to offset their energy consumption and reduce their carbon footprint.
3. Energy Storage Systems: Industrial solar inverters are also used in conjunction with energy storage systems, such as batteries, to store excess solar energy for use during periods of low sunlight or high energy demand.
4. Remote Industrial Sites: In remote or off-grid industrial locations, solar inverters play a crucial role in providing reliable and sustainable power for operations without access to traditional utility electricity.
In conclusion, industrial solar inverters are essential for harnessing the power of solar energy in industrial settings, providing a reliable and sustainable source of electricity for a wide range of industrial applications.