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This post was last edited by sdscj0122 on 2019-3-14 at 18:07. Nowadays, variable-frequency power supplies are widely used, and there are an increasing number of types of heat generation associated with them. For example, the variable-frequency power supplies they produce are categorized into single-phase variable-frequency power supplies, three-phase variable-frequency power supplies, high-power variable-frequency power supplies, and so on. So what are their characteristics? Today, let’s first talk about the characteristics of three-phase variable-frequency power supplies. Three-phase variable-frequency power supplies can handle resistive, inductive, capacitive, rectifying, and mixed loads. Its features include: 1. An efficiency of over 85%. 2. The peak factor ratio is higher than 3:1. 3. Pure and stable sine wave output. 4. It is equipped with multiple protection and alarm functions for overvoltage, overcurrent, overheating, etc. 5. High-frequency MPWM design, driven by IGBTs; features large capacity, high frequency, small size, light weight, and high efficiency. The above is a brief introduction to some of the features of three-phase variable-frequency power supplies; I hope it will be helpful to everyone. Three-phase variable-frequency power supplies can handle resistive, inductive, capacitive, rectifying, and mixed loads, and are suitable for testing in home appliance manufacturing.