A Single-Stage SPV-Fed Reduced Switching Inverter-Based Sensorless Speed Control of IM for Water Pumping Applications

Table 4

Comparison of conventional and proposed SPV-fed IMD.

Item	Conventional two-stage system	Proposed single-stage system
PWM pulses	7	4
DC-link capacitor	2	2
Boost converter inductor	1	0
Semiconductor switches (IGBTs)	7	4
Driver circuits	7	4
Speed sensor	1	0