Current source means a power source which produces a constant current irrespective of connected load . voltage source means a power source which produces a constant voltage irrespective of load .
What is the different between current and voltage?
The important difference between voltage and current. Voltage is the potential difference between two points in an electric field, which causes current to flow in the circuit. Current is the rate of flow of electrons is called current. Voltage is the cause of current (being an effect).
What is the difference between current source and voltage source inverter?
As their names imply, current source inverters are fed with constant current, while voltage source inverters are fed with constant voltage. Consequently, the output of a CSI drive is adjustable, three-phase AC current, while a VSI drive produces three-phase AC voltage with adjustable magnitude and frequency.
What is the relationship between voltage and current?
Ohm’s law defines the relationship between the voltage, current, and resistance in an electric circuit: i = v/r. The current is directly proportional to the voltage and inversely proportional to the resistance.
Can current flow without a voltage source?
Voltage is the Cause, Current is the Effect
It is possible to have voltage without current, but current cannot flow without voltage.
What is VSC and CSC?
• Current-Source Converter (CSC) is a converter in which the DC-side current maintains the same po- larity; therefore, the direction of power flow is ad- justed by the DC-side voltage polarity. • Voltage-Source Converter (VSC), in contrast, keeps the same voltage polarity.
What is the difference between VSC and CSC?
Basically, the current amplitude of DC inductor in CSC is low, and the voltage range of DC capacitor in VSC is high enough to inject the harmonic of load with the desired range and based on the defined control system (Routimo et al., 2007).
What is meant by current source inverter?
Definition: Current Source Inverter is a type of inverter circuit that changes the dc current at its input into equivalent ac current. It is abbreviated as CSI and sometimes called a current fed inverter. Here the input provided to the circuit is a stiff dc current source rather than dc voltage source.
What is the difference between current and potential difference?
**Current vs potential difference: **The current is a flow of charge. Current is measured through a component. Potential difference is the energy used between two points in a circuit, therefore it is measured between two points either side of a component.
What comes first voltage or current?
Current flows AFTER the two points having potential difference (voltage) are connected. Hence voltage comes first.
What is the difference between voltage and potential difference?
Electric potential difference, also known as voltage, is the external work needed to bring a charge from one location to another location in an electric field. Electric potential difference is the change of potential energy experienced by a test charge that has a value of +1 .
Which is an example of a voltage source?
The mains, a battery and most other sources of electrical energy are modeled as voltage sources.
Does voltage cause current or does current cause voltage?
The voltage or electric potential difference between two points is defined as the work required to move a unit charge from one point to another. An electric current flows in a conductor when an electric potential difference is applied across that conductor. Thus, voltage is the cause and current is the effect.
What is voltage when current is zero?
If there is no current flow, the voltage drop across each of the resistive elements is zero. However, the potential difference of the source appears across the open. If a voltmeter is connected across the open, the reading is the same as if it were connected directly across the terminals of the supply source.
Why Statcom is used?
The Static Synchronous Compensator (STATCOM) is used in an HVDC system to provide reactive power compensation. It makes use of the Voltage Source Converter (VSC) to synthesize a controllable sinusoidal voltage at the fundamental frequency.
What is voltage source inverter?
Definition: A voltage source inverter or VSI is a device that converts unidirectional voltage waveform into a bidirectional voltage waveform, in other words, it is a converter that converts its voltage from DC form to AC form. An ideal voltage source inverter keeps the voltage constant through-out the process.
What do you mean by line-commutated converter?
Line-commutated converters (LCCs) are the conventional, mature and well-established technology used to convert electric power from AC to DC or vice versa. In a current source converter (CSC), the DC current is kept constant with a small ripple using a large inductor.
What is the difference between a line commutated current source converters and self commutated voltage source converters?
Line-commutated converters (HVDC classic) are made with electronic switches that can only be turned on. Voltage-sourced converters are made with switching devices that can be turned both on and off.
What is the principle of current source converter?
Definition: The current source inverter converts the input direct current into an alternating current. In current source inverter, the input current remains constant but this input current is adjustable. The current source inverter is also called current fed inverter.
What is an example of a current source?
The current source can be made by putting a very high resistance in series with a voltage source. Some examples of Current Sources are – Secondary current in a current transformer, Solar Panels, Semiconductor devices, etc.
Does a current source have resistance?
The internal resistance of an ideal current source is infinite. An independent current source with zero current is identical to an ideal open circuit.
Contents