ELECTRONIC CONTROL SYSTEM FOR ELECTRIC MOTORS; ELECTRICAL DRIVE CONTROLLERS FOR ELECTRIC MOTORS; CONVERTERS AND INVERTERS FOR USE TO DIRECT MAINS VOLTAGE AND MAINS FREQUENCY ACCORDING TO THE APPLICATION INTO THE REQUIRED MAINS VOLTAGE AND POWER FREQUENCY, TO CONVERT A DETERMINED MAINS FREQUENCY INTO A VARIABLE MAINS FREQUENCY, AND TO MANAGE THE ROTARY FREQUENCY OF ELECTRIC MOTORS; FREQUENCY CONVERTER AND FREQUENCY INVERTER FOR USE TO DIRECT MAINS VOLTAGE AND MAINS FREQUENCY ACCORDING TO THE A...

ELECTRONIC CONTROL SYSTEM FOR ELECTRIC MOTORS; DRIVE CONTROL FOR ELECTRIC MOTORS; CONVERTER/INVERTER FOR USE TO DIRECT MAINS VOLTAGE AND MAINS FREQUENCY ACCORDING TO THE APPLICATION INTO THE REQUIRED MAINS VOLTAGE AND POWER FREQUENCY, TO CONVERT A DETERMINED MAINS FREQUENCY INTO A VARIABLE MAINS FREQUENCY, AND TO MANAGE THE ROTARY FREQUENCY OF ELECTRIC MOTORS; FREQUENCY CONVERTER/FREQUENCY INVERTER FOR USE TO DIRECT MAINS VOLTAGE AND MAINS FREQUENCY ACCORDING TO THE APPLICATION INTO THE REQUI...