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  • Is DC-DC converter suitable for railway applications,  powered directly by batteries

    Is DC-DC converter suitable for railway applications, powered directly by batteries

    Apr , 02 2024
    DC/DC power converters are suitable for harsh mechanical and electrical environments in traction vehicles and locomotive applications. It has an ultra wide input voltage range from 16V to 160V and covers all input power systems in railway applications, including 24V, 28V, 36V, 48V, 72V, 96V, and 110VDC. Due to the increase in onboard electronic systems, the use of ultra wide input voltage converte...
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  • THE RELATIONSHIP BETWEEN APPARENT POWER, ACTIVE POWER, AND REACTIVE POWER

    THE RELATIONSHIP BETWEEN APPARENT POWER, ACTIVE POWER, AND REACTIVE POWER

    Apr , 20 2024
    The apparent power, active power, and reactive power meet the following triangular relationships: Figure (1): Schematic diagram of the power triangle S:Apparent power S 2 =P 2 + Q 2 Q:Reactive power P = S *cosφ
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  • Long-term storage methods for lithium batteries and storage requirements for lithium iron phosphate batteries

    Long-term storage methods for lithium batteries and storage requirements for lithium iron phosphate batteries

    Apr , 20 2024
    What impact will the lithium battery have after being put aside for a long time? When the lithium battery is idle, due to the nature of the battery itself, self-discharge, passivation of positive and negative electrode materials, electrolyte decomposition and other phenomena will occur. The instability of the negative SEI will lead to the rapid decline of the negative active substance, which is ea...
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  • What is the impact of low temperature on lithium batteries and solutions

    What is the impact of low temperature on lithium batteries and solutions

    Apr , 20 2024
    The use of lithium batteries in low battery temperature environments is limited. In addition to a severe drop in discharge capacity, lithium batteries cannot be charged when the battery temperature is low. When the battery is charged at low temperature, the lithium ion embedment on the battery graphite electrode and the lithium plating reaction exist simultaneously and compete with each other. Und...
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  • Causes, effects and measures of common problems of photovoltaic modules

    Causes, effects and measures of common problems of photovoltaic modules

    Apr , 26 2024
    First. Excessively high/low temperature Excessively high or low PV module temperatures can negatively affect the performance of the PV power system. The following are the causes and effects as well as the corresponding measures: 1. Causes of excessive temperature: solar radiation, heat conduction, shadow coverage, etc. Impact: Reduces the conversion efficiency of the module. Excessive temperature ...
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  • Measures to suppress harmonics

    Measures to suppress harmonics

    May , 11 2024
    The fundamental cause of harmonic generation is due to nonlinear loads. When the current flows through the load and does not have a linear relationship with the applied voltage, it forms a non sinusoidal current, resulting in harmonics. The suppression of harmonics in the power system is to reduce or eliminate the harmonic current injected into the system, in order to control the harmonic voltage ...
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  • Lead-acid battery failure model

    Lead-acid battery failure model

    May , 11 2024
    The most common failure modes are:   - Softening or shedding of the active material.  During discharge the lead oxide (PbO2) of the positive plate is transformed into lead sulfate (PbSO4), and back to lead oxide during charging. Frequent cycling will reduce cohesion of the positive plate material due to the higher volume of lead sulfate compared to lead oxide.    Corrosion...
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  • Indispensable components of using UPS uninterruptible power supply

    Indispensable components of using UPS uninterruptible power supply

    May , 25 2024
    A UPS uninterruptible power supply is a system device that connects a battery to a mainframe and converts DC power to city power through the modular circuitry of the mainframe inverter. High-efficiency double-conversion UPS with multiple modes of operation purifies power over the rated voltage and frequency range of IT equipment and industrial equipment. In choosing a modular system design, the UP...
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  • Characteristics of UPS power supply used in server rooms

    Characteristics of UPS power supply used in server rooms

    May , 31 2024
    1. At the beginning of the bullying load is small, and expansion may occur at a later stage. There must be a redundant design that does not allow the load to be turned off during expansion. 2、It can be used in conjunction with the original generator as a power source or distribution for faulty configurations to ensure the smooth operation of power supply. 3, When a UPS failure, the faulty UPS batt...
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  • Advantages of Nickel-Cadmium Batteries

    Advantages of Nickel-Cadmium Batteries

    May , 31 2024
    Ni-Cd batteries have been around nearly as long as lead-acid. Commercial products have been available since around 19007. Pocket plate designs are typically used for long to high current types, while fiber plates are used for extremely high current short demand applications like engine starting.   While Ni-Cd batteries typically cost many times what a comparable lead-acid does, their characte...
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  • What is a nickel-cadmium battery

    What is a nickel-cadmium battery

    May , 31 2024
    1. Working principle of nickel-cadmium battery Nickel-cadmium batteries are rechargeable batteries that convert chemical energy into electricity through REDOX reactions. It consists of a negative electrode (the negative material is Cd), a positive electrode (the positive material is NiOOH), and an electrolyte (the main component is KOH). 2. Features of nickel-cadmium batteries Long cycle life; Wid...
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  • What are the benefits of online UPS and how to improve  power quality

    What are the benefits of online UPS and how to improve power quality

    Jun , 06 2024
    What are the benefits of online UPS power supply? The online UPS (uninterruptible power supply) system has  multiple advantages, making it the preferred choice for applications  that require reliable and stable power supply. Continuous power supply One of the main advantages of online UPS is its ability to provide  continuous power supply to connected devices. Online UPS continuousl...
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