A Type-3 PLL for Single-Phase Applications

Abdullahi Bamigbade, Vinod Khadkikar, Mohamed Al Hosani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations


Different structures of single-phase PLL have been widely developed for the synchronization of single-phase grid-connected power electronic-based equipments. These PLLs mostly employ proportional-integral (PI) controller as loop filter, thereby resulting in a type-2 control system. Hence, they are able to achieve zero steady-state phase error following step changes in frequency and phase of a single-phase input signal. However, when the input signal varies continuously over time in a linear manner, these PLLs exhibit a finite steady-state phase error. Thus, they may not be suitable for applications that require accurate estimation of phase angle when a ramp change in frequency occurs. To overcome this problem without compromising the benefits of type-2 PLLs, a type-3 PLL for single-phase applications is developed in this paper. Through experimental validation and comparison with an advanced single-phase type-2 PLL, the effectiveness of developed type-3 PLL is demonstrated.

Original languageBritish English
Title of host publication2019 IEEE Industry Applications Society Annual Meeting, IAS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538645390
StatePublished - Sep 2019
Event2019 IEEE Industry Applications Society Annual Meeting, IAS 2019 - Baltimore, United States
Duration: 29 Sep 20193 Oct 2019

Publication series

Name2019 IEEE Industry Applications Society Annual Meeting, IAS 2019


Conference2019 IEEE Industry Applications Society Annual Meeting, IAS 2019
Country/TerritoryUnited States


  • disturbance rejection capability
  • gain cross-over frequency
  • loop filter
  • Phase locked-loop (PLL)
  • phase margin
  • steady-state error


Dive into the research topics of 'A Type-3 PLL for Single-Phase Applications'. Together they form a unique fingerprint.

Cite this