The most efficient method of doing this is by Pulse Width Modulation (PWM) control used within the inverter. In this scheme the inverter is fed by a fixed input voltage and a controlled ac voltage is obtained by adjusting the on and the off periods of the inverter components.
The parameters of the circuit are the following: a switching frequency between 1.95 kHz. The task of an inverter is to convert a DC input voltage into an AC output voltage whose amplitude and frequency can be adjustable.
A three-phase Voltage Source Inverter (VSI) with SPWM (Sinusoidal Pulse Width Modulation) is a type of inverter that converts DC voltage into three-phase AC voltage with sinusoidal waveforms. It works by varying the pulse width of a high-frequency carrier signal according to the instantaneous amplitude of a reference sinusoidal waveform.
In this case, the PWM inverter is considered to be simply a voltage amplifier with a unit gain. However, when the reference exceeds the peak of the triangular carrier (i.e., MI > 1), the inverter cannot produce an output voltage linearly proportional to the voltage reference.
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The output voltage amplitude amounts to 545 V, which corresponds to an RMS value of 386 V. The current waveform shows that the load power has doubled to amount to 20 kW. …
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The paper considers the principle of constructing a new class of single-phase voltage inverters (SVI) of increased power when used to solve the problem of available …
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The demand for more reliable and efficient electric machines and drives is constantly growing in the renewable energy and transport electrification sectors. Such drive systems are …
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This article proposes a new phase voltage vector residual-based fault diagnosis method to distinguish the similar open-circuit (OC) fault features of different switches in the three-level T …
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This paper proposes a robust voltage control strategy for grid-forming (GFM) inverters in distribution networks to achieve power support and voltage optimization. …
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