FIELD: electrical engineering. SUBSTANCE: some stator leads of AC machine with active rotor are connected to variable-frequency and variable-amplitude AC power supply and other ones, to adjustable DC source. EFFECT: simplified implementation of such drives in practice, improved reliability of a number of test and vibratory facilities, enlarged functional capabilities which makes them suitable for use in measuring devices and as actuating devices in computer-aided process control systems with oscillatory movement of control element. 1 dwg
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