Analysis of information sources in references of the Wikipedia article "开关磁阻电动机" in Chinese language version.
When the phase winding is to be disconnected from the supply (this instant is also dependent on the position of the shaft) the devices T1 and T2 are turned off .The stored energy in the phase winding A tends to maintain the current in the same direction. This current passes from the winding through D1 and D2 to the supply. Thus the stored energy is fed back to the mains.
Digital signal processors and special algorithms in SR controls are vital to precisely time current pulses fed to the motor windings relative to rotor and stator position . SR technology has not experienced real breakthroughs . reduced interest in SR technology
SR drives operate at switching frequencies typically 10 times lower than comparable ac drives . Some other sources seem to put both motors in the same category.) Emotron concurs that today’s SR motor is not a stepping motor since current is continuously monitored and controlled relative to rotor angular position
Because of their relatively smaller production numbers, manufacturing costs for SR technology tend to be higher
Digital signal processors and special algorithms in SR controls are vital to precisely time current pulses fed to the motor windings relative to rotor and stator position . SR technology has not experienced real breakthroughs . reduced interest in SR technology
SR drives operate at switching frequencies typically 10 times lower than comparable ac drives . Some other sources seem to put both motors in the same category.) Emotron concurs that today’s SR motor is not a stepping motor since current is continuously monitored and controlled relative to rotor angular position
Because of their relatively smaller production numbers, manufacturing costs for SR technology tend to be higher
When the phase winding is to be disconnected from the supply (this instant is also dependent on the position of the shaft) the devices T1 and T2 are turned off .The stored energy in the phase winding A tends to maintain the current in the same direction. This current passes from the winding through D1 and D2 to the supply. Thus the stored energy is fed back to the mains.
