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This paper reviews the existing structures for converter stages in renewable energy and motor drive systems that offer high voltage gain at the input of an inverter. The inverter may also connect the DC supply to the utility grid. For traction motor drives in vehicle and rail transport and in high-frequency transformer connected grids, bi-directional power flow capability is also required. Cascaded...
This paper presents a closed-loop control strategy for dual inverter-fed, permanent magnet synchronous motors with non-sinusoidal back-EMFs. The inverters are connected to both ends of the machine winding but use only one power source, thus providing a path for zero sequence currents to circulate in the motor windings. If neglected, the zero sequence current can cause higher maximum peak and rms phase...
This paper investigates the modulation and control of a new bidirectional converter for 42V ISA system. The modulation for both rectifier and inverter is derived from the indirect space vector modulation algorithm for AC/AC matrix converter. The proposed bidirectional AC/DC power converter combines the advantages of matrix converter and Z-source inverter. The closed-loop control of input displacement...
Learning is a central task in computer science, and there are various formalisms for capturing the notion. One important model studied in computational learning theory is the PAC model of Valiant (CACM 1984). On the other hand, in cryptography the notion of "learning nothing'' is often modelled by the simulation paradigm: in an interactive protocol, a party learns nothing if it can produce a...
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