POWER SYSTEM OVERCURRENT PROTECTION MEANS UTILIZING VOLTAGE ADJUSTMENT

摘要

The actual electric current transmitted between a source of variable voltage electric power and an electric motor connected thereto is continuously monitored and utilized to generate a first control signal in response to a motoring current equal to or greater than a predetermined level and a second control signal in response to a regenerative current equal to or greater than a predetermined level. A regulator is responsive to the first control signal to reduce the output voltage of the electric power source and to the second control signal to increase the output voltage of the power source, the result being a rapid reduction in the actual current.