Page 1
Inverters
Series Inverter: In a series inverter, the commutating elements L and C are connected in
series with the load resistance R. The load resistance R can also be in parallel with C.
The value of L and C are such that those form an underdamped circuit i.e.
Parallel Inverter: During the working of this inverter, capacitor C comes in parallel with the load
via. the transformer, so this inverter is called a parallel inverter.
Bridge Inverter: Bridge circuits are commonly used in DC-AC conversion.
Moreover, an output transformer is not essential in a bridge circuit.
1- ? Half Bridge Inverter-
Page 2
Inverters
Series Inverter: In a series inverter, the commutating elements L and C are connected in
series with the load resistance R. The load resistance R can also be in parallel with C.
The value of L and C are such that those form an underdamped circuit i.e.
Parallel Inverter: During the working of this inverter, capacitor C comes in parallel with the load
via. the transformer, so this inverter is called a parallel inverter.
Bridge Inverter: Bridge circuits are commonly used in DC-AC conversion.
Moreover, an output transformer is not essential in a bridge circuit.
1- ? Half Bridge Inverter-
1- ? Full Bridge Inverter-
Amplitude Modulation Depth:
where V m, V C, are the modulating and carrier signal voltages, respectively.
For sinusoidal PWM, the amplitude modulation depth must be less than 1.0
Output Voltages:
Page 3
Inverters
Series Inverter: In a series inverter, the commutating elements L and C are connected in
series with the load resistance R. The load resistance R can also be in parallel with C.
The value of L and C are such that those form an underdamped circuit i.e.
Parallel Inverter: During the working of this inverter, capacitor C comes in parallel with the load
via. the transformer, so this inverter is called a parallel inverter.
Bridge Inverter: Bridge circuits are commonly used in DC-AC conversion.
Moreover, an output transformer is not essential in a bridge circuit.
1- ? Half Bridge Inverter-
1- ? Full Bridge Inverter-
Amplitude Modulation Depth:
where V m, V C, are the modulating and carrier signal voltages, respectively.
For sinusoidal PWM, the amplitude modulation depth must be less than 1.0
Output Voltages:
the fundamental line-line voltage is given by
Available output voltage:
Assuming that the DC voltage is created using a diode rectifier and capacitor dc
link, the maximum available DC voltage is given by
where VLLS is the line-line supply voltage. The maximum output using sinusoidal
PWM (ma=1) is
Resistive Load:
where, Vs = DC voltage source
R = Load resistance
R-C (Resistive-Capacitive Load):
Where, VC(t) = Voltage across capacitor at time t
Where, VC(t) = Voltage across capacitor at time t
Initial rate of rise of capacitor voltage:
Page 4
Inverters
Series Inverter: In a series inverter, the commutating elements L and C are connected in
series with the load resistance R. The load resistance R can also be in parallel with C.
The value of L and C are such that those form an underdamped circuit i.e.
Parallel Inverter: During the working of this inverter, capacitor C comes in parallel with the load
via. the transformer, so this inverter is called a parallel inverter.
Bridge Inverter: Bridge circuits are commonly used in DC-AC conversion.
Moreover, an output transformer is not essential in a bridge circuit.
1- ? Half Bridge Inverter-
1- ? Full Bridge Inverter-
Amplitude Modulation Depth:
where V m, V C, are the modulating and carrier signal voltages, respectively.
For sinusoidal PWM, the amplitude modulation depth must be less than 1.0
Output Voltages:
the fundamental line-line voltage is given by
Available output voltage:
Assuming that the DC voltage is created using a diode rectifier and capacitor dc
link, the maximum available DC voltage is given by
where VLLS is the line-line supply voltage. The maximum output using sinusoidal
PWM (ma=1) is
Resistive Load:
where, Vs = DC voltage source
R = Load resistance
R-C (Resistive-Capacitive Load):
Where, VC(t) = Voltage across capacitor at time t
Where, VC(t) = Voltage across capacitor at time t
Initial rate of rise of capacitor voltage:
R-L Load:
L-C Load:
R-L-C Load:
Page 5
Inverters
Series Inverter: In a series inverter, the commutating elements L and C are connected in
series with the load resistance R. The load resistance R can also be in parallel with C.
The value of L and C are such that those form an underdamped circuit i.e.
Parallel Inverter: During the working of this inverter, capacitor C comes in parallel with the load
via. the transformer, so this inverter is called a parallel inverter.
Bridge Inverter: Bridge circuits are commonly used in DC-AC conversion.
Moreover, an output transformer is not essential in a bridge circuit.
1- ? Half Bridge Inverter-
1- ? Full Bridge Inverter-
Amplitude Modulation Depth:
where V m, V C, are the modulating and carrier signal voltages, respectively.
For sinusoidal PWM, the amplitude modulation depth must be less than 1.0
Output Voltages:
the fundamental line-line voltage is given by
Available output voltage:
Assuming that the DC voltage is created using a diode rectifier and capacitor dc
link, the maximum available DC voltage is given by
where VLLS is the line-line supply voltage. The maximum output using sinusoidal
PWM (ma=1) is
Resistive Load:
where, Vs = DC voltage source
R = Load resistance
R-C (Resistive-Capacitive Load):
Where, VC(t) = Voltage across capacitor at time t
Where, VC(t) = Voltage across capacitor at time t
Initial rate of rise of capacitor voltage:
R-L Load:
L-C Load:
R-L-C Load:
Single Phase Half Wave Diode Rectifier:
with R Load:
With L load:
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