Tiếng ViệtIn the power circuit, the power is the most important, so that the increased capacity depends on the factors of amperage and voltage (voltage). However, the active power we use every day depends on another factor that is the power factor (cos Phi) this coefficient is proportional to the active power (P). In order to set the best active power, it is necessary to raise the power factor. Read this article to better understand the formula for calculating power factor, power factor of series RLC circuit and how to improve power factor.
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Contents
What is the power factor and the power factor of the circuit
What is the power factor?
What is power factor? In electrical engineering, the power factor of alternating current is the definition of active and apparent power in an electrical circuit. The power factor in the circuit is from about -1 to 1 and usually in our country the power factor of 0.8 is averaged.
In electrical engineering, the real power factor TTTT is calculated as the active power divided by the apparent power, but it is not always calculated by the above method, but it is looked up by empirical or standard data tables. presented in different cases.
Power factor of the circuit
The power factor of the circuit is calculated as the active power measured by the power meter divided by the power recorded on the device or circuit to give the instantaneous power factor of the device or circuit. Present.
The power factor in a circuit is the natural power factor of the circuit, but in large systems and circuits, the power factor will be compensated by compensating the power factor in various ways to increase the power factor. high power factor.
What is the formula for calculating the power factor and its symbol? and regardless of what?
To calculate the power factor, we have the following formula to calculate the power factor:
Rated power (P) divided by apparent power (S).
The resistance (R) of the total circuit divided by the total resistance (Z) of the total circuit.
What is the symbolic power factor? The power factor is denoted by Cos Phi.
The power factor does not depend on the amperage (I) and voltage (U) of the system but on the resistance (R), inductance (L) and capacitance (C) of the alternator.
Power factor of series rlc circuit
The power factor of an RLC circuit is a circuit consisting of three main elements: R is the total resistance in the circuit, L is the total inductance in the circuit and C is the total capacitance in the circuit. With L inductance we calculate ZL as inductance and C capacitance we calculate the capacitance ZC for the circuit.
The power factor of an RLC circuit is calculated as the total impedance of the circuit equal to the root of the squared resistance by the difference of the reactance minus for the all squared capacitance. And the power factor is the quotient of the resistance divided by the total resistance.
See more: Notes when buying a 500KVA alternator Mecc Alte to avoid the risk of counterfeit goods.
When is the power factor zero and power factor enhancement
The power factor of a circuit is from -1 to 1, but when the power factor of the circuit is equal to 1, that is when the circuit is pure resistive, it means that the circuit has only the resistive element R and when the power factor is When is the rate zero? The power factor is zero when the circuit has no R elements but only L or C.
In industrial parks, factories, and factories, there is a certain level of power factor, so they do not let the power factor go low, so increasing the power factor is a way many people use to make the power factor decrease. the capacity is always above the allowable level and to avoid being charged for unworked power and penalized for being too low a power factor.
See more:Where to buy a reputable Italian brand 250KVA alternator?
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CATEGORY: TECHNICAL QUESTIONS AND ANSWERS
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