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Based on the different types of input and output filters, the single-phase high-frequency link matrix rectifier is divided into voltage source and current source. Respectively, for the voltage and current source circuit proposed de-re-coupling coupled PWM modulation strategy, and the working state of voltage and current source topology in a high frequency period is analyzed in detail. Finally, the...
Aiming at the topology of single-phase current source high-frequency link matrix rectifier, a novel unipolar frequency doubling de-re-coupling SPWM method is proposed. The basic idea and the corresponding logic combination are used to control the matrix converter. And the working state of the circuit topology in a high frequency period is analyzed. The proposed new modulation method eliminates the...
There are many methods for detecting harmonic current in grid, which have different characteristics. Ip-iq detection method based on instantaneous reactive power theory is complex and various link, when the grid voltage is unbalanced, the grid synchronization signal error will appear, and low-pass filter (LPF) in harmonic detection link brings influence about rapidity. In order to detect the harmonic...
In this paper, on the basis of single phase high frequency link matrix inverter and Z source network, a single-phase Z source high frequency link matrix inverter is proposed. And use a modulation strategy named pre and post coordinated SPWM. which using boost pulse width modulation as the former, and the matrix converter work in an all ‘1’ state when the former direct connection. Z source inverter...
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