| Abstract |
The paper discusses, with particular reference to the gate-drive circuit, the design of an inverter to reproduce a stored current waveform with a high degree of accuracy for use in a motor drive system. The gate-drive circuit combines low cost with individual overcurrent protection for each switch, thus providing shoot-through and short-circuit protection without the need or expense of a d.c. link choke. In addition to the gate-drive circuit design, the reasons for choosing MOSFETs as the main power devices, alternative gate-drive circuit configurations and inverter protection techniques are discussed. Although designed for a standard bridge configuration, MOSFET inverter, the gate-drive circuit presented is applicable to other MOS input devices and to other power circuit configurations. |
