**5.2 BDS method with PC technique**

The generation of the required identical six pulses using PC technique for the regeneration control circuit (RCC) of BDS method is shown in **Figure 16(a)**. Here duty cycle is linearly varying with respect to the output power of the MC drive as shown in **Figure 16(b)**. In order to verify the regenerative energy dissipation, the input phase powers are calculated using input phase voltages and the input phase currents. The resulting input phase currents and calculated input phase power are shown in **Figure 17(a)** and **(b)**, respectively. When compared to **Figure 15(b)**, **Figure 18** proves that regenerative power is dissipated using novel RCC of BDS method, hence input phase voltages (VA, VB, VC) and input phase currents (iA, iB, iC) are in phase. However, there is some input power left, as shown in **Figure 17(b)**,

#### **Figure 16.**

*(a) Generation of the six pulses and (b) duty cycle and output power variation for regeneration control circuit of the BDS method with the PC technique. Vin = 240 V, q = 0.75, and fs = 10 kHz.*

**67**

**Figure 19.**

*q = 0.75, and fs = 10 kHz.*

**Figure 18.**

*Matrix Converter for More Electric Aircraft DOI: http://dx.doi.org/10.5772/intechopen.81056*

**5.3 IPC method and SCC method with IVR technique**

*Phase relationship between input phase voltages and currents of MC drive.*

*Pulse for RCC, duty cycle variation, and output power for the IPC method with the IVR technique. Vin = 240 V,* 

tion with a MC drive similar to PC technique.

the IM and switching noises.

because of constant losses (such as friction, windage losses, and inertial losses) in

The generation of a pulse to trigger the RCC, duty cycle variation, and the output power (Po) variation during regeneration for the IPC method with the IVR technique is shown in **Figure 19**. **Figure 20** shows input phase powers (PA, PB, PC) of MC drive after regeneration control. From simulation results, the IVR technique for both methods (IPC and SCC) is producing acceptable results to avoid regenera-

*Aerospace Engineering*

(iA, iB, iC) can be seen in **Figure 15(b)**.

**5.2 BDS method with PC technique**

in **Figure 15(a)**. During regeneration, the phase opposition (180*°* phase displacement) between the input phase voltages (VA, VB, VC) and input phase currents

The generation of the required identical six pulses using PC technique for the regeneration control circuit (RCC) of BDS method is shown in **Figure 16(a)**. Here duty cycle is linearly varying with respect to the output power of the MC drive as shown in **Figure 16(b)**. In order to verify the regenerative energy dissipation, the input phase powers are calculated using input phase voltages and the input phase currents. The resulting input phase currents and calculated input phase power are shown in **Figure 17(a)** and **(b)**, respectively. When compared to **Figure 15(b)**, **Figure 18** proves that regenerative power is dissipated using novel RCC of BDS method, hence input phase voltages (VA, VB, VC) and input phase currents (iA, iB, iC) are in phase. However, there is some input power left, as shown in **Figure 17(b)**,

*(a) Generation of the six pulses and (b) duty cycle and output power variation for regeneration control circuit* 

*of the BDS method with the PC technique. Vin = 240 V, q = 0.75, and fs = 10 kHz.*

**66**

**Figure 17.**

**Figure 16.**

*(a) Input phase currents and (b) input phase powers for BDS method.*

because of constant losses (such as friction, windage losses, and inertial losses) in the IM and switching noises.
