For visual learners, this book is a goldmine. The voltage and current waveforms for SRMs and the phasor diagrams for PM synchronous machines are drawn with precision. These diagrams are often the key to answering difficult exam questions or debugging real-world drive issues.
Mastering the “Specials”: Why K. Venkataratnam’s Book is a Must-Have for Electrical Engineers Special Electrical Machines By K Venkataratnam
The book aligns very well with the syllabi of major technical universities (JNTU, VTU, Anna University, etc.) and competitive exams like GATE. It strikes the right balance: rigorous enough for postgraduates, but accessible enough for final-year undergraduates. For visual learners, this book is a goldmine
If you want to move beyond induction motors and understand the motors that power the 21st century (EVs, robots, medical devices), keep this book on your desk. Mastering the “Specials”: Why K
The author has a gift for breaking down complex electromagnetic structures. Whether it’s the variable reluctance principle in a stepper motor or the hysteresis loop in a hysteresis motor, the explanations are logical and methodical. He starts with the physical construction, moves to the principle of operation, and then dives into the mathematical model.
A special machine is useless without its drive. Unlike older texts that treat the machine and its power electronics separately, Venkataratnam integrates the discussion. He explains how the electronic switches (transistors, thyristors) fire to create the rotating magnetic field. You learn not just why a BLDC motor turns, but how the Hall sensors and inverter coordinate to make it happen.
There are several textbooks on the market, but K. Venkataratnam’s approach is uniquely effective for several reasons: