In Shunt wound DC Machines, the field coils are allied in parallel throughthe armature. As the shunt field gets the complete o/p voltage of a generator otherwise a motor supply voltage, it is normally made of a huge number of twists of fine wire with a small field current carrying. Serie...
DS21949A-page 1 TC1303B Functional Block Diagram VREF Undervoltage Lockout (UVLO) UVLO Synchronous BUCK Regulator VIN1 VIN2 PDRV LX SHDN1 Control Driver NDRV PGND PGND VOUT1/VFB1 PGND AGND PG TC1303B PG Generator with Delay VREF UVLO VOUT2 LDO SHDN2 AGND DS21949A-page 2 © 2005 ...
Figure 5. Block diagram of the simplified current loop scheme. The characteristic Equation of (11) reveals a second-order system. However, the nominator of the transfer function introduces zero due to the PI controller. It increases the system overshoot, lowering the potential closed-loop bandwid...
Equation (12) reveals that there exists a substantial double frequency AC disturbance on the machine winding in the d-q plane, whereas it is supposed to have all quantities in DC. The reconfigured drive, along with modifications m1 and m2, leads to the following observations: Observation 1. ...
n × (Hi − Hi+) = 0 (14) In this equation Hi is the magnetic field intensity of the sub-domain i and Hi+ is the magnetic field intensity of sub-domain i+. In both (13) and (14), n is the perpendicular unit vector to the interface between two adjacent sub-domains. According...
2.3. Feedforward Compensation for Fault-Tolerant Three-Phase Induction Motor Drive From (12), it can be observed that by compensating the disturbance terms appearing on the right-hand side of the equation, one-to-one mapping of d-q voltages between the controller and the machine voltages will...