Motor Dtc Pmsm

motor-dtc-pmsm — PMSM Direct Torque Control Builder

Three-phase 2-level voltage-source inverter + PMSM (SPMSM / IPMSM via parameterization). Outer-loop = Speed PI providing Te_ref. Inner-loop = Direct Torque Control in αβ stationary frame: stator flux integrator + magnitude/angle/sector + 2-level hysteresis on (T, ψ) + Sutikno 6-state switching table → V_k → gate.

Layered on [motor-pmsm-base](../motor-pmsm-base/SKILL.md). All base discipline applies.

Must-Follow Rules

1. Plan first — Numbered plan with 21 input table, design-decision choices ([designdecisions.md](references/designdecisions.md)), build-script structure. Get user approval.
2. One-click reproducibility — All parameters injected via set_param(mdl, 'InitFcn', ...). Model must Run from .slx double-click in fresh MATLAB session. See [critconditions.md §E-CRIT](references/critconditions.md).
3. Default 6-state switching table for PMSM — switching_table_mode='6state' (Sutikno 2011 Table 2). Never default to 8-state Takahashi for PMSM — V0/V7 zero vectors cause flux to decay. See [switchingtable.md](references/switchingtable.md) and [critconditions.md §A-CRIT](references/critconditions.md).
4. ψ_ref ≠ ψ_f by default — Take psi_ref from reference if supplied; else compute the id=0 load-point stator flux |ψ_s|_load = sqrt(ψ_f² + (Lq·iq_max)²) (not true MTPA, which needs id Ld, Lq/Ld ≤ 1.5 | psiref = id=0 load-point flux: sqrt(ψf² + (Lq·iq_max)²)` |

| IPMSM strong saliency | Lq/Ld ≥ 2 | Same id=0 flux formula; T_max may need higher headroom |

Topology does not change — same blocks, same wiring, same chart, same CRIT conditions. Only psi_ref and iq_max budgets differ.

Out-of-scope sub-types: SynRM (ψ_f ≈ 0), IM, BLDC trapezoidal — different prediction equations and switching tables.

Known Limitation: Classical DTC Te Ripple

Hysteresis-driven switching produces an inherent torque ripple intrinsic to the bang-bang structure. Steady-state mean Te tracks reference within < 1%, but the instantaneous-Te ripple band may exceed simple ±5% bands. Acceptance Criteria Mode A allows S2 to be the marginal metric in the 4/5 budget per [acceptancecriteria.md](references/acceptancecriteria.md). Advanced variants that reduce ripple (DTC-SVM, MP-DTC, Sutikno Table 3) are out of scope.

Sibling Skills

• [motor-pmsm-base](../motor-pmsm-base/SKILL.md) — base infrastructure
• [motor-fcs-mpc](../motor-fcs-mpc/SKILL.md) — FCS-MPC alternative
• [motor-smc-pmsm](../motor-smc-pmsm/SKILL.md) — SMC alternative

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: calebzu
• Source: calebzu/pmsm-control-claude-skills-for-matlab
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.