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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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  • 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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  • The difference and comparison of advantages between P-type and N-type components

    The difference and comparison of advantages between P-type and N-type components

    May , 11 2024
    Materials and Structure of a Solar Cell The construction of a particular solar cell is going to vary slightly depending on the specific technology that is utilized to manufacture it. In most solar cells, there is an aluminum back surface field and a P-N Junction. At the P-N junction, there are p-type crystalline silicon wafers that are positively charged and n-type crystalline silicon wafers that ...
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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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  • 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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  • Methods for reducing ripple voltage

    Methods for reducing ripple voltage

    Jun , 06 2024
    Brief introduction Ripple voltage is a voltage fluctuation in the output of a DC power supply, referring to the AC component of the output voltage. Excessive ripple voltage can have an impact on the normal operation of electronic devices, so reducing ripple voltage is an important issue that needs to be addressed in the power supply design process. This article will introduce some commonly used me...
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  • What are the characteristics of industrial UPS power supplies

    What are the characteristics of industrial UPS power supplies

    Jun , 14 2024
    Industrial UPS power supply needs to focus on the design of the ability to operate in high-temperature environments. Component design must be adapted to the operating requirements of industrial environments, high temperature and high humidity, but also to cope with corrosive gases on the corrosion of the system. Operating continuously at full load under a variety of operating conditions, industria...
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  • A brief introduction to EMI

    A brief introduction to EMI

    Jun , 14 2024
    What is an active power filter Active Power Filter (APF) is a new type of power electronic device used to dynamically suppress harmonics and compensate reactive power, which can compensate for harmonics and reactive power changes in magnitude and frequency. The reason why the active filter is called active, as the name suggests, the device needs to provide a power supply (to compensate for the har...
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  • The difference between the first, second, and third levels of distribution boxes

    The difference between the first, second, and third levels of distribution boxes

    Jun , 22 2024
    What do the primary, secondary, and tertiary boxes of a distribution box mean? This is a relative issue. Let's make a hypothesis: a newly built residential area introduces a 10kV incoming line and builds a distribution room. The outgoing line from the low-voltage end of the transformer is 0.4kV to the distribution cabinet (primary distribution cabinet), then the outgoing line is led to the distrib...
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