Power-adjustable load and power adjusting method

Abstract

The invention relates to the technical field of loads, in particular to a power-adjustable load and a power adjusting method, and the power-adjustable load comprises a PTC (Positive Temperature Coefficient) ceramic resistor which is used as a test load; the fan is used for cooling the PTC ceramic resistor; the speed regulator is used for regulating the speed of the fan; the temperature sensor is used for detecting the temperature value H of the PTC ceramic resistor; the voltage detector is used for detecting the voltage value L of the PTC ceramic resistor; the controller is electrically connected with the temperature sensor, the voltage detector, the speed regulator and the fan and used for dynamically driving the speed regulator to change the rotating speed of the fan according to the temperature value H and the voltage value L so as to dynamically adjust the PTC ceramic resistor to be within the preset temperature range, and therefore the purpose of dynamically adjusting the PTC ceramic resistor to the needed power is really achieved. And the load power is constant by adjusting the rotating speed of the fan. Load structure circuits are simple, cost is low, and the same function can be achieved.

Description

technical field [0001] The invention relates to the technical field of loads, in particular to a load with adjustable power and a power adjustment method. Background technique [0002] With the popularization of network technology, Internet data center computer rooms aimed at carrying out data hosting business, and enterprise-owned data center computer rooms aimed at data networking concentration are widely used in communication operators, banking and financial systems, governments and various large enterprises. and other places; in order to ensure the safe and stable operation of the servers in the data center computer room, the power supply of the data center computer room needs to be able to realize stable, reliable and uninterrupted power supply, and with the continuous increase of server data in the data center computer room, the data center computer room The power supply needs to have a high load capacity. Usually, in the design and construction of the data center comp...

AI Technical Summary

Problems solved by technology

[0004] However, according to the conventional thinking, the loads of the above prior art just blindly reduce the temperature of the resistor as much as possible, and use constant and inconvenient water cooling and constant air cooling to dissipate heat and cool down, forcing the thermistor to cool down as much as possible, which has tended to be constant. resistance value to achieve constant power

However, there are still defects in the above technologies: constant water cooling and air cooling force the thermistor to cool down. On the one hand: although the thermistor can be prevented from overheating, it can only be controlled at a constant and unique power and a single heating balance On the other hand, under different usage environments, the heating speed of the thermistor is inconsistent, constant cooling will only make the thermistor keep cooling down, it is actually difficult to achieve the heating balance point, it will There is a difference between the actual power and the theoretical power and the power fluctuates greatly

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